Best 2 GPM Tankless Water Heaters (Oct. 2026) - Rated by CherryPicks' Experts

Last Updated: October 30,2026

Table Of Contents

At a Glance: Our Top Picks

Top 1

Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot Water Suppl...

9.8

CPR Score

Click For Price

Top 2

Westinghouse 14kW Tankless Water Heater Electric 240V, Wifi, ETL, Gray

9.7

CPR Score

Click For Price

Top 3

Wintemp 27kW Tankless Water Heater Electric 240V, Whole House On Demand Hot W...

9.7

CPR Score

Click For Price

Tips

Our 2 GPM Tankless Water Heaters Ranking is based on our detailed analysis of 306 2 GPM Tankless Water Heaters and over 7,909 customer reviews. We have compiled the top 28 Best 2 GPM Tankless Water Heaters you might be interested in and ratings based on product features.

* CherryPicks.Reviews is reader-supported, Our editor review, and recommend the best products based on extensive data analysis, if you click on the product links, we may earn a commission through qualifying products purchased.

The Best 2 GPM Tankless Water Heaters Rated by CherryPicks

CPR Rating: 9.8 - Electric Tankless Water Heater WINTEMP 27kW 240... - #1 Reviews Analyzed: 238
CPR Rating: 9.7 - Westinghouse 14kW Tankless Water Heater Electri... - #2 Reviews Analyzed: 7
CPR Rating: 9.7 - Wintemp 27kW Tankless Water Heater Electric 240... - #3 Reviews Analyzed: 60
CPR Rating: 9.6 - 14kW Tankless Water Heater Electric, ORBEK On D... - #4 Reviews Analyzed: 227
CPR Rating: 9.5 - Rheem 11kW 240V Tankless Electric Water Heater - #5 Reviews Analyzed: 519
CPR Rating: 9.4 - Rheem RTEX-24 24kW 240V Electric Tankless Water... - #6 Reviews Analyzed: 893
CPR Rating: 9.4 - Rheem 18kW 240V Tankless Electric Water Heater - #7 Reviews Analyzed: 2,185
CPR Rating: 9.3 - Westinghouse Smart Tankless Water Heater Propan... - #8 Reviews Analyzed: 31
CPR Rating: 9.3 - Camplux 2.64 GPM Propane Portable Gas Water Hea... - #9 Reviews Analyzed: 745
CPR Rating: 9.2 - MIZUDO Tankless Water Heater Propane, Indoor or... - #10 Reviews Analyzed: 307
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Market Overview

2 GPM Tankless Water Heaters Reviewed

Reviews Analyzed: 7,909 Items
CPR Avg. Rating: 8.6 / 10

28 Products Evaluated

Highest Price: $899.99
Lowest Price: $55.94
Avg. Price: $360.82

Price Disclaimer

Top 28 2 GPM Tankless Water Heaters on Amazon (Verified You can Buy)

Top 1 Best for Tanked Best for Whole House Best for 3 GPM Best for 7 GPM Best for 8 GPM Best for 9 GPM Best for 10 GPM Best for 11 GPM

Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot Water Supply, On Demand Instant Endless Water Heater, with LED Temperature Display, WiFi Control, Up to 6.3 GPM, ETL Certified

WINTEMP

WN27

11.0 x 11.0 x 19.1 Inches

12.7 Pounds

Ratings for WINTEMP (CPR Score)

9.8

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
WINTEMP	-	❌	❌	❌

Features

Important Note: Ensure this tankless water heater meets your installation requirements, 200 Amp Household Service Recommended. The WN27 model is rated at 27KW (240V) with a maximum amperage of 113A. It requires 3 x 40 Amp double-pole (DP) breakers and 3 x 8/2 AWG wiring with ground, with a recommended 250A household power supply. The unit dimensions are 11.1” (W) x 19.1 ” (H) x 4” (D), the water connection is 3/4" NPT, Please consult a qualified electrician before purchasing

Stable Water Temperature: Automatically adjusts energy consumption based on incoming water temperature and flow rate to ensure maximum efficiency, continuous stable temperature, and optimal power usage. Its maximum hot water output is 6.5 gallons per minute. It is perfect for residential shower use, eliminating the need to wait for preheating. There’s no longer any concern about running out of hot water in the tank, and you won’t experience temperature fluctuations during your shower. Provides continuous hot water for showers and everyday household use

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Top 2 Best for Rheem Best for Rinnai Best for 3 GPM Best for 6 GPM Best for 7 GPM Best for 9 GPM Best for 12 GPM Best for 14 GPM

Westinghouse 14kW Tankless Water Heater Electric 240V, Wifi, ETL, Gray

Westinghouse

9.56 x 9.56 x 12.59 Inches

Ratings for Westinghouse (CPR Score)

9.7

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

【Dedicated Circuit Requirements & Installation】This Westinghouse tankless water heater electric requires a dedicated 60A double-pole breaker and 6 AWG wire at 240V for stable, safe operation. With 1/2" NPT connections and a compact wall-mountable design at just 12.59"H x 9.56"W x 3.28"D that takes zero floor space, this Westinghouse electric tankless water heater offers quick, hassle-free installation—whether new build or replacement, just as you'd expect from a genuine Westinghouse tankless water heater.

【3s Instant Heating& Strong GPM Output】This Westinghouse electric tankless water heater 240v delivers hot water in just 3 seconds with 98% thermal efficiency. The minimum start-up flow rate is 0.53 GPM.When inlet temperature is 62°F and outlet is set to 105°F, flow reaches 3.4 GPM—supporting 2 water points simultaneously. This on demand water heater brings endless instant hot water to your daily routine. That's the reliable performance you expect from a 14kW Westinghouse tankless water heater electric.

【Smart WiFi , Voice Control & Temperature Memory】 Compatible with Alexa and Google Home, this 14kW Westinghouse tankless water heater lets you adjust temperature and monitor usage via simple voice commands or the mobile app from anywhere. The new temperature memory function automatically restores your last preset temperature after a power outage—no repetitive setup required. This Westinghouse electric tankless water heater makes hot water management as effortless as controlling your smart lights, making it an essential component of any modern smart home, all backed by the trusted Westinghouse name.

【ETL Certified Safe & Reliable】This Westinghouse tankless water heater electric is ETL certified with 4-layer protection (leakage, overheat, dry-fire, over-voltage), IPX4 rating, and separated water-electricity pathway. Upgraded anti-fog technology resists moisture, allowing installation in bathrooms. This14kW on demand water heater is built with safety you can trust from Westinghouse.

【Long-Lasting Durability & Scale Reduction】 The separated water-electricity pathway in this Westinghouse tankless water heater electric significantly reduces internal corrosion and scale buildup, extending the unit's service life. A removable inlet filter and rotor can be easily taken out by hand for cleaning—we recommend rinsing them every 6 months to remove trapped sediment and scale. This simple maintenance step restores optimal water flow and ensures your Westinghouse electric tankless water heater consistently performs at its best, year after year, with the durability that Westinghouse products are famous for.

【Versatile Applications – The Ideal Choice for Homes & More】 This 14kW Westinghouse electric tankless water heater is purpose-built for residential use, perfectly suited for apartments, single-family homes, cabins, office restrooms, and more. Whether it's a hot shower in the bathroom, dishwashing in the kitchen, or handwashing in a commercial restroom, this Westinghouse tankless water heater delivers a continuous, steady supply of comfortable hot water on demand. Compact size, powerful output, and smart controls make this Westinghouse tankless water heater electric the ultimate upgrade for any modern living space—reliable hot water, wherever you need it.

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Top 3 Best for Whole House Best for 30 Gallon Best for 5 GPM Best for 7 GPM Best for 8 GPM Best for 10 GPM Best for 15 GPM

Wintemp 27kW Tankless Water Heater Electric 240V, Whole House On Demand Hot Water, Automatically Maintains Water Temperature, Up to 6.5 GPM, WiFi Control, ETL Eertified, Eco, WM27V Plus

WINTEMP

WM27V

13.0 x 13.0 x 15.9 inches

21.5 Pounds

Ratings for WINTEMP (CPR Score)

9.7

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
WINTEMP	-	❌	❌	❌

Features

Important Note: Before purchasing, please ensure this unit meets your installation requirements, 200 Amp Household Service Recommended. The WM27V model is rated at 27kW (240V) with a maximum current of 113A. It requires 3 × 40 Amp double-pole breakers and 3 sets of 8 AWG wiring for installation, with 3/4" NPT water connections, Please consult a qualified electrician before purchasing

Endless Hot Water: Advanced flow control technology automatically maintains water temperature, ensuring maximum efficiency and consistently comfortable hot water. It delivers up to 6.5 GPM of stable hot water output, and if the hot water demand exceeds capacity, the system will slightly reduce the flow to keep the temperature steady-so your hot shower is never interrupted. No more worrying about running out of hot water. Perfect for 2–4 points of use in the home

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Top 4 Best for Inline Best for Tanked Best for Electric Best for Boiler Best for 40 Gallon Best for 80 Gallon Best Tankless Water Heaters Best for Takagi Best for Noritz Best for Rinnai Best for EcoSmart Best for FOGATTI Best for GASLAND Best for AO Smith Best for 3 GPM Best for 6 GPM Best for 7 GPM Best for 9 GPM Best for 10 GPM Best for 11 GPM Best for 12 GPM Best for 14 GPM Best for 15 GPM

14kW Tankless Water Heater Electric, ORBEK On Demand Instant Hot Water Heater 240V, Max 3.38 GPM, Supply for 1-2 Fixtures, ETL Certified, Indoor Installation, New Upgraded 2.0

Orbek

14kW 2.0 Model

9.5 x 9.5 x 14.2 Inches

Ratings for Orbek (CPR Score)

9.6

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Amazon Resale	-	❌	❌	❌
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

Note: Please ensure the household circuit breaker panel has a total current capacity of at least 150 amps. Our Orbek tankless water heater electric 14kw requires a 240V/60AMP two-pole breaker, 1 set of 6 AWG wires and 1/2" NPT water connections.

Instant Hot Water Supply: Orbek electric tankless water heater 240v can provides max 3.38 GPM of on demand endless hot water and ensure comfortable hot water for 2-3 points of use

Experience High Efficiency & Cost Savings: Our on demand hot water heater electric delivers endless hot water in just 3 seconds and uses up to 60% less electricity than traditional tank heaters. Its advanced water-electricity separation technology minimizes scale and corrosion, ensuring lasting performance. Save energy and enjoy reliable, instant hot water.

Certified Safety & Advanced Protection: This tankless hot water heater is ETL certified and engineered for your peace of mind. It features comprehensive safety systems including leakage, over-temperature, and dry-heating protection, along with lightning resistance. Every unit undergoes rigorous factory testing to ensure safe, reliable, and normal operation in your home.

Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, keeping water temperature stable within 1°F for a comfortable shower experience

Intuitive LED Display for Precise Control: Our tankless electric water heater features a high-definition digital screen with soft backlighting. Easily set your preferred temperature between 86°F and 140°F and monitor real-time temperature changes at a glance for effortless and precise hot water management.

Space-Saving & Easy Installation: This electric hot water heater features a compact design (14.2"H x 9.5"L x 3.1"W), saving over 50% of space compared to traditional tank heaters to fit easily in tight corners. Its structurally optimized build makes setup straightforward and hassle-free.

After-Sale Service: We provide long-term return & exchange services along with professional technical consulting support

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Top 5 Best for Rheem Best for Inline Best for Tanked Best for Electric Best for NG Best for Thermostat Best for Whole House Best for Rheem Best for 10 Gallon Best Tankless Water Heaters Best for Takagi Best for Noritz Best for Rheem Best for EcoSmart Best for FOGATTI Best for Eccotemp Best for AO Smith Best for 4 GPM Best for 5 GPM Best for 7 GPM Best for 8 GPM Best for 9 GPM Best for 10 GPM Best for 11 GPM Best for 12 GPM Best for 14 GPM Best for 15 GPM

Rheem 11kW 240V Tankless Electric Water Heater

Rheem

RTEX-11

12.63 x 8.25 x 3.63 Inches

7.0548 pounds

99,8%

Ratings for Rheem (CPR Score)

9.5

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Amazon.com	-	✅	✅	✅
Plumber's Paradise	-	✅	✅	✅
CASA CAYOS	-	✅	✅	✅
AXY Co	-	✅	✅	✅
Amazon Resale	-	❌	❌	❌
Trena's Liquidation LLC	-	❌	❌	❌
MTL Retailers	-	❌	❌	❌
Vertex Harbor	-	❌	❌	❌

Features

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

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Top 6 Best for Rheem Best for Inline Best for Tanked Best for Electric Best for Whole House Best for Rheem Best Tankless Water Heaters Best for Takagi Best for Noritz Best for Rheem Best for Rinnai Best for EcoSmart Best for FOGATTI Best for Eccotemp Best for AO Smith Best for 3 GPM Best for 4 GPM Best for 5 GPM Best for 6 GPM Best for 7 GPM Best for 8 GPM Best for 9 GPM Best for 10 GPM Best for 11 GPM Best for 12 GPM Best for 14 GPM Best for 15 GPM

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

Rheem

RTEX-24

18.25 x 14.5 x 3.5 Inches

17.8 Pounds

Ratings for Rheem (CPR Score)

9.4

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Amazon.com	-	✅	✅	✅
GM Not Mo	-	✅	✅	✅
Amazon Resale	-	❌	❌	❌
Sunny ING	-	❌	❌	❌
Nantek	-	❌	❌	❌
Columbiatradestock (S/N Info Recorded)	-	❌	❌	❌
Trena's Liquidation LLC	-	❌	❌	❌
MTL Retailers	-	❌	❌	❌

Features

ON/OFF Dial Control with adjustable digital temperature display

Self-modulating power control

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Top 7 Best for Rheem Best for Inline Best for Tanked Best for Whole House Best for Rheem Best for 20 Gallon Best for 50 Gallon Best Tankless Water Heaters Best for Takagi Best for Noritz Best for Rheem Best for Rinnai Best for EcoSmart Best for FOGATTI Best for Eccotemp Best for AO Smith Best for 5 GPM Best for 7 GPM Best for 9 GPM Best for 11 GPM Best for 12 GPM Best for 14 GPM Best for 15 GPM

Rheem 18kW 240V Tankless Electric Water Heater

Rheem

RTEX-18

18.5 x 14.5 x 3.5 inches

14.78 Pounds

99.8%

Ratings for Rheem (CPR Score)

9.4

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Miami Water Heater	-	✅	✅	✅
CARESAN	-	✅	✅	✅
CASA CAYOS	-	✅	✅	✅
Amazon.com	-	✅	✅	✅
Trena's Liquidation LLC	-	❌	❌	❌
Amazon Resale	-	❌	❌	❌
Mega Mart Warehouse	-	❌	❌	❌
PEACHSTATESTEALSANDDEALS	-	❌	❌	❌
MTL Retailers	-	❌	❌	❌

Features

External digital thermostatic control with LED display (+/1 degree accuracy)

Most advanced self-modulation, adjust power to meet hot water demand

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Top 8 Best for 4 GPM

Westinghouse Smart Tankless Water Heater Propane Indoor, 5.1 GPM 120,000 BTU Whole Home Instant Hot Water Heater, WiFi App Control, ±1°F Temperature Stability, Non-Condensing for 2-4 Fixtures

Westinghouse

AMZ-HW120A1G-LP

12.5 x 12.5 x 23.9 inches

Ratings for Westinghouse (CPR Score)

9.3

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

【Endless Hot Water for Everyday Home Use】Designed for indoor whole-home performance, this propane tankless water heater delivers up to 5.1 GPM and 120,000 BTU of on-demand hot water for showers, sinks, dishwashers, and laundry appliances. Comfortably supports 2–4 fixtures simultaneously without running out of hot water.

【Smart WiFi App Control】Easily adjust water temperature and monitor system operation through the smartphone app or LED control panel. Enjoy a smarter and more convenient hot water experience with real-time temperature visibility and simplified operation.

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Top 9 Best for CAMPLUX Best for Gas Powered Best for Outdoor Best for Propane Best for Eccotemp Best for CAMPLUX Best for 3 GPM Best for 6 GPM Best for 8 GPM Best for 9 GPM Best for 10 GPM Best for 12 GPM

Camplux 2.64 GPM Propane Portable Gas Water Heater, Outdoor Tankless Camping Water Heater with Digital Display, White

CAMPLUX ENJOY OUTDOOR LIFE

BW264S

12.8 x 6.1 x 21.7 inches

18.0 Pounds

Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)

9.3

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Camplux	-	✅	✅	✅
Amazon Resale	-	❌	❌	❌

Features

CSA Safety Standard -CSA safety standard approved tankless propane water heater,flame failure device, anti-freezing protection, over heating protection to ensure the family safety. Automatically decrease water pressure between 3.6-110 PSI. The anti-freezing drain plug can discharge the residual water to avoid freezing in cold areas or in case of long time no use. The propane hot water heater will shut off automatically when high water temperature protection over 176 °F.

Lightweight Portable Design-Compact size and weights 23 lbs for easily carry. Hang it using the mounting bracket on the top/back of the gas water heater. It only takes you a 15 minutes to install the propane water heater.

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Top 10 Best for LP Best for Propane Liquid Best for 4 GPM

MIZUDO Tankless Water Heater Propane, Indoor or Outdoor Convertible Installation, Max 5.1 GPM 120,000 BTU, WiFi&APP Control CSA Certified for Large Families Whole House, GEN 3

MIZUDO

FDG-CS120AW-LP

14.56 x 14.56 x 22.83 inches

Ratings for MIZUDO (CPR Score)

9.2

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Mizudo Home Comfort Direct	-	❌	❌	❌

Features

[Flexible Indoor&Outdoor Installation Solution]: Mizudo innovative propane tankless water heater offers versatile installation options to meet various home configurations. Convert from indoor to outdoor use with accessory kits (Purchase Required), providing homeowners unprecedented flexibility for space utilization

[Smart WiFi and App Control]: Manage your tankless water heater propane remotely through the dedicated mobile application. Adjust temperature settings, monitor energy usage, and receive maintenance notifications from anywhere

[Advanced Temp Control]: The liquid propane tankless water heater outdoor combines sophisticated water flow monitoring and gas modulation to maintain stable output even during simultaneous multi-fixture use, experience consistent water temperature within 1℉. This ensures comfortable showers without sudden temperature variations

[High Power Performance]: With 120,000 BTU output and 5.1 gallons per minute flow rate, this outdoor tankless water heater efficiently supplies multiple bathrooms simultaneously. The powerful heating capacity meets the demands of large families, ensuring adequate hot water availability during peak usage times throughout your home

[Premium Quality Components]: Constructed with industrial-grade materials including phosphorous-deoxidized copper heat exchanger and stainless steel combustion chamber. These components ensure long-term reliability and consistent performance, providing this tankless hot water heater years of dependable service with minimal maintenance requirements

[CSA Certified&Safety System]: This propane tankless hot water heater meets all US safety standards through CSA certification and incorporates multiple protection mechanisms. The system includes freeze protection, dry burn prevention, flame failure detection, and exhaust blockage protection. These features work together to ensure safe operation under various conditions

[Reliable Warranty Coverage]: Backed by comprehensive protection including 2-year full unit warranty and 5-year heat exchanger coverage. This warranty commitment demonstrates our confidence in product quality and provides long-term assurance for your investment

[Indoor Installation]: Required 3"OD vent pipe system, Mizudo Vent Pipe: VP030A0S-B

[Outdoor Installation]: Required outdoor vent cap conversion kit, Mizudo Vent Cap: VP030AOS-G

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Top 11 Best for CAMPLUX Best for Eccotemp Best for CAMPLUX

CAMPLUX Tankless Water Heater - 2.64GPM Portable Propane Heater for Off Grid, Camping, Outdoor Shower - 68,000 BTU - BW264G - Gray

CAMPLUX ENJOY OUTDOOR LIFE

BW264G

13.0 x 13.0 x 21.7 Inches

21.0 Pounds

Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)

9.2

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Camplux	-	❌	❌	❌

Features

𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞 𝐃𝐞𝐬𝐢𝐠𝐧-More usage scenarios to carry on. Enjoy DIY Outdoor Shower, RV Shower, Camping Shower, Outdoor Pet Shower, RV/SUV/MPV, Beach Bathing Boxes, Campsites, Hunting Cabins, Boats, Kid Pools, or just around your house.

𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧-It only takes you a few minutes to get 2.64 gallons per minute of instant hot water. The portable hot water heater lights when water pressure between 3.6-110 PSI, low water pressure is perfect for campings and remote cabins.

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Top 12 Best for Whole House Best Gas Water Heaters Best for 30 Gallon Best for 40 Gallon Best for 50 Gallon Best for 60 Gallon Best for 75 Gallon Best for Tankless Best for 50 Gallon Best for Takagi Best for 4 GPM

MIZUDO Natural Gas Tankless Water Heater, Indoor or Outdoor Convertible Installation, Max 5.1 GPM 120,000 BTU, WiFi&APP Control CSA Certified for Large Families Whole House, GEN 3

MIZUDO

FDG-CS120AW-NG

14.56 x 14.56 x 22.83 inches

Ratings for MIZUDO (CPR Score)

8.9

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Mizudo Home Comfort Direct	-	❌	❌	❌

Features

[Flexible Indoor&Outdoor Installation Solution]: Mizudo innovative natural gas tankless water heater indoor offers versatile installation options to meet various home configurations. Convert from indoor to outdoor use with accessory kits (Purchase Required), providing homeowners unprecedented flexibility for space utilization

[Smart WiFi and App Control]: Manage your tankless water heater gas remotely through the dedicated mobile application. Adjust temperature settings, monitor energy usage, and receive maintenance notifications from anywhere

[Advanced Temp Control]: The tankless gas water heater combines sophisticated water flow monitoring and gas modulation to maintain stable output even during simultaneous multi-fixture use, experience consistent water temperature within 1℉. This ensures comfortable showers without sudden temperature variations

[High Power Performance]: With 120,000 BTU output and 5.1 gallons per minute flow rate, this natural gas tankless water heater outdoor efficiently supplies multiple bathrooms simultaneously. The powerful heating capacity meets the demands of large families, ensuring adequate hot water availability during peak usage times throughout your home

[Premium Quality Components]: Constructed with industrial-grade materials including phosphorous-deoxidized copper heat exchanger and stainless steel combustion chamber. These components ensure long-term reliability and consistent performance, providing your tankless water heater years of dependable service with minimal maintenance requirements

[CSA Certified&Safety System]: This gas tankless water heater indoor meets all US safety standards through CSA certification and incorporates multiple protection mechanisms. The system includes freeze protection, dry burn prevention, flame failure detection, and exhaust blockage protection. These features work together to ensure safe operation under various conditions

[Reliable Warranty Coverage]: Backed by comprehensive protection including 2-year full unit warranty and 5-year heat exchanger coverage. This warranty commitment demonstrates our confidence in product quality and provides long-term assurance for your investment

[Indoor Installation]: Required 3"OD vent pipe system, Mizudo Vent Pipe: VP030A0S-B

[Outdoor Installation]: Required outdoor vent cap conversion kit, Mizudo Vent Cap: VP030AOS-G

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Top 13 Best for Rheem Best for Outdoor Best for Rheem Best Gas Water Heaters Best for 40 Gallon Best for 50 Gallon Best for 60 Gallon Best for Takagi Best for Rheem Best for 3 GPM Best for 7 GPM

Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray

Rheem

RTG-70XLN-3

9.4 x 13.5 x 20.75 inches

39.25 Pounds

Ratings for Rheem (CPR Score)

8.6

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Amazon Resale	-	❌	❌	❌
Amazon.com	-	❌	❌	❌

Features

High-efficiency tankless gas water heater delivers up to 7.0 GPM, perfect for 2–3 bathroom homes with multiple hot water needs like showers and laundry.

Powered by natural gas with 160,000 BTUs, this durable tankless unit ensures fast, reliable hot water—even during peak household demand.

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Top 14 Best for Whole House Best for 4 GPM Best for 5 GPM Best for 7 GPM Best for 8 GPM Best for 9 GPM Best for 10 GPM

WINTEMP 36kW Tankless Electric Water Heater 240V, Instant On-Demand Endless Hot Water, Up to 8.7 GPM, LED Temperature Display, Whole House Supply, WiFi Control, ETL Certified

WINTEMP

WN36

13.7 x 13.7 x 21.1 inches

36.05 pounds

Ratings for WINTEMP (CPR Score)

8.6

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
WINTEMP	-	❌	❌	❌
Amazon Resale	-	❌	❌	❌

Features

Important Note: Please ensure this tankless water heater meets your installation requirements, 300 Amp Household Service Recommended. The WN36 model is rated at 36KW (240V) with a maximum current draw of 150A. It requires 4 x 40 Amp double-pole (DP) breakers and 4 x 8/2 AWG cables with ground. A 300A household power supply is recommended. Unit dimensions: 13.7” (W) x 21.1” (H) x 5.3” (D). Water connection: 3/4" NPT, Please consult a qualified electrician before purchasing

Stable Water Temperature: Automatically adjusts energy consumption based on incoming water temperature and flow rate to ensure maximum efficiency, a consistently stable temperature, and optimal power usage. With a maximum hot water output of 8.7 gallons per minute, it’s ideal for residential showers — no need to wait for preheating, no risk of running out of hot water, and no more temperature fluctuations during your shower. Provides continuous hot water for showers and everyday household use

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Top 15 Best for 4 GPM

Orbek 120,000 BTU Tankless Water Heater Natural Gas,Indoor/Outdoor

Orbek

HW120A1W-NG

14.57 x 14.57 x 22.83 Inches

25.57 Pounds

Ratings for Orbek (CPR Score)

8.5

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

✔️【Endless On-Demand Hot Water】The Orbek tankless water heater gas indoor delivers 120,000 BTU heating capacity with 5.1 GPM high flow rate, featuring innovative 0.53 GPM low-flow start technology. It can provide a continuous supply of hot water to 2-4 outlets at the same time, making it suitable as a whole-house water heater or a practical gift for friends and family

✔️【Smart WiFi, App & Voice Control】: Connect your tankless gas water heater to WiFi and take full control from the Orbek app – or simply use your voice with Alexa. No more manual adjustments. Whether you're at home or away, you can easily set your ideal water temperature, monitor energy usage in real time, and receive instant maintenance alerts directly to your phone.

✔️【Flexible Installation – Indoor or Outdoor Setup】This gas tankless water heater is designed for both indoor and outdoor installation. For indoor use, simply connect the included direct vent pipe kit to safely exhaust combustion gases outside. For outdoor installation, attach the weatherproof exhaust hood (sold separately) and mount it on an exterior wall – perfect for homes without a dedicated utility room. Choose the setup that fits your home’s layout and save valuable space.

✔️【Efficient & Energy-Saving】The highly efficient oxygen-free copper heat exchanger heats water rapidly, while a built-in chip intelligently adjusts the water temperature 20,000 times per second, keeping fluctuations within 1°F to provide a stable and comfortable water flow. It also keeps stable combustion even at low flow rates, achieving efficient energy utilization

✔️【Certified Safety & Reliable】The natural gas tankless water heater is CSA certified, meets stringent North American safety standards, and integrates multiple protections including anti-dry burning, anti-overheating, anti-leakage, anti-flameout, and anti-high water pressure. Whether showering, washing, or using water in the kitchen, you and your family can enjoy a stable supply of hot water with peace of mind

✔️【Compact & Compatible】The gas water heater's compact design (22.83″ × 14.57″ × 7″) blends seamlessly into homes, cottages, and apartments. The gas tankless water heater fits standard 3-inch exhaust pipe, 3/4-inch NPT connector, and 120V household power. We recommend professional installation to help you can enjoy reliable and comfortable hot water instantly

✔️【Convenient & Worry-free】2-year protection on the entire unit and a 5-year protection on the heat exchanger provide you with reliable support. The ttankless water heater is equipped with a smart remote control and LED display, you can easily and precisely set the water temperature between 95°F and 149°F, and there's no need to reset it after a power outage. Its low-noise operation and energy-saving features create a quiet and worry-free home environment for you

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Top 16 Best for Fogatti Best for FOGATTI

FOGATTI Propane Gas Tankless Water Heater Outdoor - Max 5.1 GPM 120,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 120S Series

FOGATTI

120S

15.5 x 15.5 x 23.9 inches

29.3 Pounds

Ratings for FOGATTI (CPR Score)

8.4

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

Efficient Tankless Heating: The FOGATTI tankless water heater propane occupies only a third of the size of traditional heaters while delivering five times the performance. With 120,000 BTU and 5.1 GPM flow rate, it provides instant, endless hot water, supporting 2-4 outlets at once, making it perfect for whole house with medium family

Excellent Value: The tankless water heater provides excellent value with top performance at low energy costs. Its eco-efficient design helps reduce energy bills while saving space. Offering reliable hot water on demand, it ensures you get great value for the investment, combining efficiency, savings, and convenience

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Top 17 Best for CAMPLUX Best for CAMPLUX Best for 4 GPM Best for 5 GPM Best for 10 GPM

CAMPLUX 4.22 GPM Tankless Water Heater Propane, Propane Water Heater Outdoor, for Camping, Off Grid, Cabins, 110,000 BTU, BD422

CAMPLUX ENJOY OUTDOOR LIFE

BD422

15.75 x 7.68 x 25.59 inches

25.79 Pounds

Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)

8.4

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Camplux	-	❌	❌	❌

Features

𝟏𝟏𝟎,𝟎𝟎𝟎 𝐁𝐓𝐔 𝐏𝐨𝐰𝐞𝐫𝐟𝐮𝐥 𝐎𝐮𝐭𝐩𝐮𝐭 - Unit size 15.8(W)*7.5(D)*25.6(H) inches, weight 25.8 lbs. Operating at 4.22 gallons per minute with a maximum power of 110,000 BTU/hour, it handles water pressures from 4 to 110 PSI. For low-pressure areas, pair it with a 12-volt pump for better performance

𝐒𝐞𝐭𝐮𝐩 𝐌𝐚𝐝𝐞 𝐒𝐢𝐦𝐩𝐥𝐞 - This outdoor water heater operates with a standard 20lb propane tank and comes with a pre-installed gas regulator. Just connect the water inlet and shower kit, add 2 D-size batteries, check for gas leaks, and you're good to go

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Top 18 Best for High Efficiency Best Gas Water Heaters Best for 30 Gallon Best for 40 Gallon Best for 50 Gallon Best for 60 Gallon Best for 75 Gallon Best for Tankless

APUS Tankless Water Heater Natural Gas, Up to 4.42 GPM, Indoor Tankless Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display,Space Gray

APUS

AP-AWH-Q13NG

5.9 x 5.9 x 20.55 inches

19.18 pounds

High

Ratings for APUS (CPR Score)

8.3

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
APUS WATER EQUIPMENT	-	❌	❌	❌
Amazon Resale	-	❌	❌	❌

Features

Powerful & High-Capacity: This high-performance gas tankless water heater delivers 95,000 BTU heating capacity with 4.42GPM high flow rate, featuring innovative 0.66GPM low-flow start technology. As a versatile natural gas tankless water heater, it meets simultaneous hot water demands for 2 showers plus 1 sink while maintaining stable temperatures even during peak usage.

Precise & Steady: With high-precision sensors and smart CPU technology, this tankless gas water heater maintains water temperature within ±1°F of your desired setting (adjustable from 95°F-140°F). No more sudden hot/cold shocks—just perfectly steady water for showers, washing, and more, even with multiple faucets running. Enjoy worry-free comfort every time!

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Top 19 Best for Inline Best for Electric Best for NG Best for Compact Best for Digital Best for Mini Best for Outdoor Best for Thermostat Best for Whole House Best for Under Sink Best for Wall Best for Residential Best for High Efficiency Best for 120 Volt Best for 10 Gallon Best for 60 Gallon Best for 80 Gallon Best for 100 Gallon Best Tankless Water Heaters Best for Takagi Best for Noritz Best for Stiebel Eltron Best for EcoSmart Best for FOGATTI Best for GASLAND Best for Eccotemp Best for AO Smith Best for 7 GPM Best for 9 GPM Best for 11 GPM Best for 12 GPM Best for 14 GPM Best for 15 GPM

110V Tankless Water Heater Electric, 3000W Tankless Electric Water Heater Instant, Under Sink Water Heater with Digital Display, On Demand Hot Water Heaters Electric for Kitchen Washin Bathroom.

xwdzswgs

Tankless Water Heater

4.32 x 4.32 x 7.86 Inches

Ratings for xwdzswgs (CPR Score)

8.2

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
liuyiliang7788	-	❌	❌	❌
Amazon Resale	-	❌	❌	❌

Features

Tankless Electric Water Heater - This electric tankless water heater uses stainless steel and ABS materials, LED display. With 3000W power, the electric water heater tankless can raise the water by 82° F(0.3GPM) -131° F(0.5GPM) in seconds. The instant water heater can set Fahrenheit or Celsius degrees by holding the power button for 6 seconds. This 110 volt electric tankless hot water heater uses advanced technology, no need to preheat, eliminating the long waiting time for hot water!

Safety Intelligence Reliable - This instant hot water heater has multiple protection functions. IPX4 waterproof, water and electricity isolation, leakage protection, dry boil protection, and automatic power off under overheating and inactivity. On demand water heater with LCD digital display, intelligent detection of working status, and performance. The thermal efficiency of electric hot water heater is as high as 98%, allowing you to enjoy hot water at any time and save energy.

Efficient And Compact Design - This tankless hot water heater electric has a compact design, perfect for spaces such as kitchens, apartments, bathrooms, RVs, and camping. The on demand water heater electric adopts a wall-mounted design, freeing up valuable space for your home, enjoy hot water at any time. This instant electric water heater qualifies for ETL standard. You can expect the outstanding performance of this on demand electric water heater in the coming years.

Easy To Install And Application - This electric instant hot water heater comes with pre-fabricated set screw holes, English instructions, and 1/2 inch NPT standard connections. This small tankless water heater electric has a simple design and is quick and easy to install, saving time. This tankless water heater electric 110v is ideal for spaces such as kitchens, apartments, bathrooms, RVs, and camping. TIP: Not Suitable for showers (Shower normally requires at least 1.8 GPM).

Importance For Installation - ① The 110v point of use water heater for vertical installation only, no horizontal installation is allowed to avoid malfunction of the heating elements (E2). ② The electric tankless water heaters tighten the pipe connectors with Teflon tape to prevent a short circuit (E2). ③ This under sink water heater is recommended to be connected with wires with a cross-sectional area of ≥ 2.5 square millimeters, and connected to trip switches of over 32A for use.

Outstanding Customer Service - We provide a 24-month warranty for the instant water heater under sink. If you encounter any after-sales issues regarding the mini tankless water heater, you can always contact our small water heater electricsupport team. This 110v tankless water heater electric can be used for an unlimited time. Thanks for choosing our best 110v tankless water heater.

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Top 20 Best for Whole House Best for 5 GPM Best for 7 GPM

Westinghouse Wifi Tankless Water Heater Electric,24kW 240V,Whole House,Gray

Westinghouse

WET-24K-G

12.99 x 12.99 x 17.05 inches

17.0 pounds

Ratings for Westinghouse (CPR Score)

8.2

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

【Important Note】The APOLO-on demand hot water heater electric has a maximum flow rate of 5.55 GPM. Starting flow rate: 0.79 GPM. Current: 100A. This product can be used with 3 X 40 AMP (DP) breakers and 3 X 8 AWG wire. Bottom 3/4-inch NPT water connection. Voltage: 240V

【Instant Endless Hot Water】 The electric tankless water heater 240v 24kw features a powerful heating system, providing up to 5.55 GPM of instant on-demand hot water with a starting flow rate of only 0.79 GPM. Without long waits, you can comfortably use shower and sink simultaneously, without worrying about running out of hot water or a sudden stop in the cold water

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Top 21 Best for Inline Best for Indoor Best for Whole House Best for Residential Best for High Efficiency Best Gas Water Heaters Best for 30 Gallon Best for 40 Gallon Best for 50 Gallon Best for 60 Gallon Best for 75 Gallon Best for 80 Gallon Best for Tankless Best for 50 Gallon Best for 5 GPM Best for 7 GPM

ThermoMate CZ422NG Natural Gas Tankless Water Heater, Up to 5 GPM 113,000 BTU, High Efficiency Instant On-Demand Hot Water for Whole House Use, Indoor Residential Water Heater with Multi-Point Heating

thermomate

CZ422NG

13.77 x 13.77 x 21.65 Inches

22.0 Pounds

0.81 UEF

Ratings for thermomate (CPR Score)

8.0

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
ThermoMate Official	-	❌	❌	❌

Features

[Max 5 GPM & 113,000 BTU] - The ThermoMate instant hot water heater can supply two showers simultaneously, each delivering 105°F water at a flow rate of 2 GPM, based on an inlet water temperature of 65°F. No waiting time, no cold water shocks, perfect for busy households. Adopting advanced water flow sensor, the built-in chip can adjust the heating power 20,000 times per second, ensuring that the hot water within ±1℉ fluctuations for a comfortable shower experience.

[Safety & Reliable] - This gas tankless water heater integrates 8 protections: boil-dry, freeze, flame-out, overheating, over-temperature, pipe blockage, high-temperature lock, and excessive air pressure. Equipped with 4 ceramic heating cores, it auto-activates frost protection when temperatures hit 41°F (5℃). The energy-smart system uses minimal electricity to generate gentle warmth, preventing pipe ice buildup without high energy costs.

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Top 22

14kw Tankless Water Heater Electric 240v 3.38 GPM 2.0 | Max 3.38GPM, 2 Point of Use, 86-140℉, ETL Certified, Compact, Wifi, Compatible with Alexa & Google Home

Westinghouse

HEU-ET014KA1G-A2

8.0 x 8.0 x 11.0 inches

Ratings for Westinghouse (CPR Score)

7.9

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

【Important Note】The APOLO-on demand hot water heater electric has a max flow rate of 3.38 GPM. Starting flow rate: 0.5 GPM. Current: 59A. with one 60-amp (double-pole) circuit breaker and one 6 AWG wire. Bottom 1/2-inch NPT water connection. Voltage: 240V

【Instant Endless Hot Water】The electric tankless water heater 240v 14kw features a powerful heating system, providing instant on-demand hot water without long waits, you can comfortably use a shower and a sink simultaneously, without worrying about running out of hot water or a sudden stop in the cold water

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Top 23 Best for 8 GPM Best for 11 GPM

WINTEMP 11kW 240V Tankless Water Heater Electric, On Demand Instant Hot Water Heater, Up to 2.6 GPM, with LED Temperature Display, Self-Modulating Technology ETL Certified

WINTEMP

WN11

9.7 x 9.7 x 14.1 Inches

Ratings for WINTEMP (CPR Score)

7.8

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
WINTEMP	-	❌	❌	❌

Features

Important Note: Ensure this tankless water heater meets your installation requirements. It is rated at 11KW - 240 Volts with a maximum amperage of 33A. It requires 1 x 50 Amp DP breakers and 8# AWG wiring with ground. The unit dimensions are 9.7” (W) x 14 ” (H) x 3.4” (D), the water connection is 1/2" NPT(Hardwired installation is required)

Stable Water Temperature: Automatically adjusts energy consumption based on incoming water temperature and flow rate to ensure maximum efficiency, continuous stable temperature, and optimal power usage. Its maximum hot water output is 2.6 gallons per minute. It is perfect for residential shower use, eliminating the need to wait for preheating. There’s no longer any concern about running out of hot water in the tank, In warmer southern regions, it can support shower use, while in colder areas, it is better suited for sinks, office breakrooms, point-of-use and low-flow applications, and can also be used as a booster heater

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Top 24

Tankless Water Heater Electric, 13kW 240Volt On Demand Instant Hot Water Heater with LED Digital Display Self-modulating, Overheating Protection, CSA Certified, Up to 3.38 GPM for 2-3 Point of Use

Kweetle

13kW

10.87 x 10.87 x 2.95 Inches

5.7 pounds

Ratings for Kweetle (CPR Score)

7.3

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
KW Home&Garden	-	❌	❌	❌

Features

CONSTANT INSTANT HOT WATER: This tankless water heater electric provides a constant supply of hot water to the home with 24-hour standby. You don't have to wait more than 3 seconds to get plenty of hot water for your shower, and it's instantly hot. Also supports multi-point water supply to meet different household needs. Adjustable temperature range from 86 to 131°F

SAFE AND RELIABLE: Kweetle tankless water heater is CSA certified and has advanced safety features including dry burn protection, overheat protection, and water leakage protection for safer use. In addition, this tankless water heater electric is equipped with a advanced intelligent chip and temperature sensor to ensure that the output water temperature remains stable, providing you with a steady supply of hot water

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Top 25 Best for 3 GPM Best for 11 GPM

Tankless Water Heater Electric, 11kW 240Volt On Demand Instant Hot Water Heater with LED Digital Display Self-modulating, Overheating Protection, CSA Certified, Up to 2.68 GPM for 2-3 Point of Use

Kweetle

11kW

10.86 x 10.86 x 2.95 Inches

6.2 Pounds

Ratings for Kweetle (CPR Score)

7.3

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Erinaik	-	❌	❌	❌

Features

CONSTANT INSTANT HOT WATER: This tankless water heater electric provides a constant supply of hot water to the home with 24-hour standby. You don't have to wait more than 3 seconds to get plenty of hot water for your shower, and it's instantly hot. Also supports multi-point water supply to meet different household needs. Adjustable temperature range from 86 to 131°F

SAFE AND RELIABLE: Kweetle tankless water heater is CSA certified and has advanced safety features including dry burn protection, overheat protection, and water leakage protection for safer use. In addition, this tankless water heater electric is equipped with a advanced intelligent chip and temperature sensor to ensure that the output water temperature remains stable, providing you with a steady supply of hot water

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Top 26 Best Water Heaters Best for Inline Best for Whole House Best for Boiler Best for 5 GPM

Ranein 18kW Electric Tankless Water Heater, 240V On Demand Instant Endless Water Heater with LED Temperature Display, Control Knob, Space Saving Design, Up to 4.3 GPM for Whole House Water

Ranein

RE18K

13.8 x 13.8 x 18.7 inches

17.4165 Pounds

Ratings for Ranein (CPR Score)

7.1

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Ranein Store	-	❌	❌	❌

Features

𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭: This 18 kW, 240 V tankless electric water heater requires 2 dedicated 240 V circuits (2 × 40 A double-pole breakers and 2 × 8 AWG cables). Product dimensions: 13.8" × 3.1" × 18.7". Water connection: 3/4" NPT.

𝐏𝐨𝐰𝐞𝐫𝐟𝐮𝐥 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞: With 99% thermal efficiency and a maximum flow rate of 4.3 GPM, this 18 kW tankless water heater can support 2–3 household water outlets simultaneously. Enjoy continuous hot water for showers, sinks, or dishwashing without waiting for a storage tank to heat up.

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Top 27

Westinghouse Smart Outdoor Natural Gas Tankless Water Heater, 5.1 GPM 120,000 BTU Whole Home Instant Hot Water Heater, ±1°F Temp Stability, Non-Condensing for 2-4 Fixtures

Westinghouse

AMZ-HS120A1G-NG

15.5 x 15.5 x 23.9 Inches

Ratings for Westinghouse (CPR Score)

7.1

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Westinghouse Home Comfort Direct	-	❌	❌	❌

Features

【Endless Hot Water for Everyday Home Use】Designed for outdoor installation, this natural gas tankless water heater delivers up to 5.1 GPM and 120,000 BTU of on-demand hot water for showers, sinks, dishwashers, and laundry appliances. Comfortably supports 2–4 fixtures simultaneously without running out of hot water.

【Precise ±1°F Temperature Stability】Advanced self-modulating technology automatically adjusts gas and water flow to maintain consistent water temperature within ±1°F for a more stable and comfortable shower experience. Helps reduce cold bursts and sudden temperature fluctuations during everyday household use.

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Top 28 Best for 30 Gallon Best for 75 Gallon Best for 3 GPM

Tankless Water Heater, Novieex On Demand Water Heater Natural Gas, Up to 3.6 GPM, 86,000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-3 Point Use for Family Bathroom Kitchen

NOVIEEX

RS-13

28.53 x 17.32 x 10.83 inches

19.84 Pounds

Ratings for NOVIEEX (CPR Score)

7.0

View on Amazon Add To Cart

Customer Reviews

Seller	CPR Rank	Amazon Fulfilled	Prime	Free Shipping
Woot	115	❌	❌	❌
NOVIEEX Global	-	❌	❌	❌

Features

【Note 】 This is 3.6GPM natural gas model. Gas rated pressure: 8.04" w.c. (2.0 kPa), Gas Inlet & Cold Water Inlet & Hot Water Outlet：NPT 1/2", Power Supply: 110V-120V AC/60Hz, Water Pressure Range: 1.5-116 psi (0.01-0.8MPa)

【Reliable Hot Water on Demand】 With 86,000 BTU power, this on demand water heater delivers up to 3.6 GPM instant hot water. You can comfortably run a shower, kitchen faucet, and bathroom sink simultaneously—all without any noticeable temperature drop.

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Top 10 2 GPM Tankless Water Heaters - Verified to Buy (October 2026)

1. Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot...
2. Westinghouse 14kW Tankless Water Heater Electric 240V, Wifi, ETL, Gray
3. Wintemp 27kW Tankless Water Heater Electric 240V, Whole House On...
4. 14kW Tankless Water Heater Electric, ORBEK On Demand Instant Hot...
5. Rheem 11kW 240V Tankless Electric Water Heater
6. Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
7. Rheem 18kW 240V Tankless Electric Water Heater
8. Westinghouse Smart Tankless Water Heater Propane Indoor, 5.1 GPM 120,000...
9. Camplux 2.64 GPM Propane Portable Gas Water Heater, Outdoor Tankless...
10. MIZUDO Tankless Water Heater Propane, Indoor or Outdoor Convertible Installation,...

Top 10 2 GPM Tankless Water Heaters Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

WINTEMP
Westinghouse
Orbek
Rheem
CAMPLUX ENJOY OUTDOOR LIFE
MIZUDO
FOGATTI
APUS
xwdzswgs
thermomate

Related 2 GPM Tankless Water Heaters Guides

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Top 10 2 GPM Tankless Water Heaters Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.

1. Woot : 266,742 Yearly Feedback , Avg. Ratings 4.8
2. Camplux : 2,742 Yearly Feedback , Avg. Ratings 4.7
3. Plumber's Paradise : 2,222 Yearly Feedback , Avg. Ratings 4.8
4. MTL Retailers : 499 Yearly Feedback , Avg. Ratings 4.1
5. Mizudo Home Comfort Direct : 404 Yearly Feedback , Avg. Ratings 4.7
6. Amazon.com : 386 Yearly Feedback , Avg. Ratings 4.7
7. ThermoMate Official : 375 Yearly Feedback , Avg. Ratings 4.7
8. Westinghouse Home Comfort Direct : 268 Yearly Feedback , Avg. Ratings 4.8
9. Mega Mart Warehouse : 218 Yearly Feedback , Avg. Ratings 3.7
10. KW Home&Garden : 218 Yearly Feedback , Avg. Ratings 4.9

Rank	Name	Yearly Feedbacks	Avg. Ratings
🥇	Woot	266,742	4.8
🥈	Camplux	2,742	4.7
🥉	Plumber's Paradise	2,222	4.8
4	MTL Retailers	499	4.1
5	Mizudo Home Comfort Direct	404	4.7
6	Amazon.com	386	4.7
7	ThermoMate Official	375	4.7
8	Westinghouse Home Comfort Direct	268	4.8
9	Mega Mart Warehouse	218	3.7
10	KW Home&Garden	218	4.9

View or download top 2 GPM Tankless Water Heaters seller & rating report

[Get] 2 GPM Tankless Water Heaters Deals (✅Exclusively for Prime)

What does "Amazon Fulfilled" Mean?

Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.

When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.

What does "Prime" Mean?

"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.

Prime members also have access to other benefits, including 2-Day Shipping, Exclusive Member Deals, Prime Video, Buy With Prime, Amazon Music, Prime Gaming, and more.

Shop Prime 2 GPM Tankless Water Heaters Deals

What does "Free Shipping" Mean?

"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.

Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.

Why Should You Trust Us?

Now hundreds and thousands of Rough Plumbing supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best 2 GPM Tankless Water Heaters to buy for new October 2026?

CherryPicks’s Methodology for Evaluating 2 GPM Tankless Water Heaters

We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Rough Plumbing items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.

We collected and analyzed 306 of 2 GPM Tankless Water Heaters reviews based on our selection criteria. It helped us shortlist the top qualified and rated 2 GPM Tankless Water Heaters for Rough Plumbing, We found that most customers choose 2 GPM Tankless Water Heaters with an average price of $360.82, and the top brands are Westinghouse, CAMPLUX ENJOY OUTDOOR LIFE, Rheem, thermomate, FOGATTI And Kweetle.

Then our expert-level editors reviewed all those quality items and selected the top 28 2 GPM Tankless Water Heaters for you, We have researched hundreds of sellers and picked the top sellers for Rough Plumbing, including Amazon Resale, Woot, Camplux, Plumber's Paradise, MTL Retailers, Mizudo Home Comfort Direct, Amazon.com, ThermoMate Official, Westinghouse Home Comfort Direct, Mega Mart Warehouse, KW Home&Garden And PEACHSTATESTEALSANDDEALS. The Electric Tankless Water Heater WINTEMP 27kW 240... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 238 consumers with an average rating of 4.3.

We've helped a lot of satisfied users get the right Tools & Home Improvement product based on their needs, and save lots of time for them to pick 2 GPM Tankless Water Heaters to buy.

Written By Nathaniel Kapman

Nathaniel Kapman owns a small store where he sells tools for home improvement. From interacting with these tools over the years, he has developed a wealth of experience and can tell which tool is good for what. However, on this platform, he does not use intuition. Instead, he follows the laid down guidelines, making his reviews and guide top-notch.