Top 28 7 GPM Tankless Water Heaters on Amazon (Verified You can Buy)
Top 1
Best for 8 GPM
36kW Tankless Water Heater Electric, ThermoMate On Demand Instant Hot Water Heater 240 Volt, Max 8.0 GPM Self-Modulating for Whole House, ETL Certified for Residential Indoor Shower
thermomate
ET360
12.99 x 12.99 x 18.31 Inches
27.0 pounds
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ThermoMate Official | - | ❌ | ❌ | ❌ |
Features
[Instant & Endless Hot Water for Large Homes] Experience continuous hot water on demand. This 36kW high-capacity heater delivers instant hot water in seconds, eliminating the wait and ensuring you never run out, even during peak usage with multiple showers and appliances running simultaneously. (Estimated Flow Rate: 7.03GPM at a 35°F rise)
[Powerful Whole-House Performance] Designed for large households with high hot water demands. Effortlessly supply 4 showers, kitchens, and laundry rooms concurrently. Ideal for larger families, ensuring consistent hot water pressure and temperature throughout your entire home
Top 2
Best for Rheem
Best for Propane Liquid
Best for Indoor
Best for Rheem
Best for 50 Gallon
Best for 75 Gallon
Best for Takagi
Best for Rheem
Best for Rinnai
Best for AO Smith
Best for 3 GPM
Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs
Rheem
RTG-70DVLP-3
10.27 x 13.5 x 24.2 inches
46.5 pounds
0.82
Ratings for Rheem (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| HTRM INC. | - | ❌ | ❌ | ❌ |
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 liquid propane with 160,000 BTUs, this durable tankless unit ensures fast, reliable hot water—even during peak household demand.
Electrolux 14kW Tankless Water Heater Electric 240V - Smart WiFi & Alexa, On Demand Hot Water Heater Electric, Max 3.4 GPM, With Scale Inhibitor, Space-Saving Instant Hot Water Heater for Shower
Electrolux
14kW
8.9 x 8.9 x 12.8 inches
7.8 pounds
Ratings for Electrolux (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Electrolux Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
[3s Instant Hot Water, No Waiting] - This on demand hot water heater electric delivers endless hot water in just 3 seconds, perfect for showers, sinks, and more. As an efficient tankless water heater electric, This 14kw tankless water heater electric is designed for 1-2 fixtures with a maximum flow rate of 3.4 GPM, giving you a comfortable instant hot water experience every day.
[Smart WiFi & Alexa Voice Control] - As an advanced electric tankless water heater 240v, it comes with built‑in WiFi for remote temperature adjustment (80°F – 140°F) via a smartphone app, and is compatible with Alexa voice control. Whether you're across the room or in another part of the house, simply speak or tap to fine‑tune the temperature. This tankless electric water heater makes smart home water management easier than ever, and represents the innovation you expect from an Electrolux electric tankless water heater.
Top 4
Best Water Heaters & Parts
Best for Rheem
Best for Tanked
Best for Electric
Best for Timer
Best for Whole House
Best for Rheem
Best for 20 Gallon
Best for 50 Gallon
Best for Takagi
Best for Noritz
Best for Rheem
Best for Stiebel Eltron
Best for Rinnai
Best for EcoSmart
Best for FOGATTI
Best for GASLAND
Best for Eccotemp
Best for AO Smith
Best for 2 GPM
Best for 3 GPM
Best for 4 GPM
Best for 5 GPM
Best for 8 GPM
Best for 9 GPM
Best for 10 GPM
Best for 11 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)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Miami Water Heater | - | ✅ | ✅ | ✅ |
| CARESAN | - | ✅ | ✅ | ✅ |
| CASA CAYOS | - | ✅ | ✅ | ✅ |
| Amazon.com | - | ✅ | ✅ | ✅ |
| Trena's Liquidation LLC | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
External digital thermostatic control with LED display (+/1 degree accuracy)
Most advanced self-modulation, adjust power to meet hot water demand
Top 5
Best for Rheem
Best for Rheem
Best for 50 Gallon
Best for 60 Gallon
Best for 50 Gallon
Best for Noritz
Best for Rheem
Best for 3 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)
| 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.
Top 6
Best for Rheem
Best for Propane Liquid
Best for Outdoor
Best for Propane
Best for High Efficiency
Best for Rheem
Best Gas Water Heaters
Best for 50 Gallon
Best for Tankless
Best for 50 Gallon
Best Tankless Water Heaters
Best for Takagi
Best for Rheem
Best for Rinnai
Best for 3 GPM
Rheem RTG-70XLP-3 High Efficiency Non-Condensing Outdoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs
Rheem
RTG-70XLP-3
9.4 x 13.5 x 20.75 inches
39.25 Pounds
high
Ratings for Rheem (CPR Score)
| 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 liquid propane with 160,000 BTUs, this durable tankless unit ensures fast, reliable hot water—even during peak household demand.
Top 7
Best for Inline
Best for Whole House
Best for 30 Gallon
Best for Noritz
Best for 2 GPM
Best for 3 GPM
Best for 4 GPM
Best for 5 GPM
Best for 15 GPM
27kW Tankless Water Heater Electric, APUS 240V On Demand Instant Hot Water with Memory Function & LED Display, Energy-Saving Whole Home Water Heating System, Up to 6.5 GPM and Space Saving Design,Gray
APUS
AP- ADSK-270G13
11.42 x 11.42 x 17.72 Inches
18.96 pounds
99%
Ratings for APUS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| APUS WATER EQUIPMENT | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
Endless Instant Hot Water On Demand: Experience continuous electric tankless water heater performance with our powerful 27kW tankless water heater, delivering on-demand hot water at up to 6.5 GPM—ideal for 3-4 simultaneous uses (showers, sinks, appliances). The advanced cast aluminum heating element ensures rapid, efficient heating in this tankless hot water heater electric, with no preheating, no waiting, and no cold interruptions.
Smart Control with Memory Function: Precisely set your temperature (86°F-140°F) via the LED display on this electric tankless water heater 240V, with 1°F adjustments for ultimate comfort. The memory function saves settings after power cycles, while self-modulating tech adjusts energy use for efficiency—perfect for smart tankless water heater operation.
Top 8
Best for Whole House
Best for Takagi
Best for Noritz
Best for Rheem
Best for Stiebel Eltron
Best for EcoSmart
Best for FOGATTI
Best for AO Smith
Best for 2 GPM
Best for 3 GPM
Best for 4 GPM
Best for 5 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)
| 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
Top 9
Best for Indoor
Best for High Efficiency
Best Gas Water Heaters
Best for Fogatti
Best for 30 Gallon
Best for 40 Gallon
Best for 75 Gallon
Best for 80 Gallon
Best for Tankless
Best for Takagi
Best for FOGATTI
Best for AO Smith
FOGATTI Natural Gas Tankless Water Heater Indoor - Max 7.5 GPM 170,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 170S Series
FOGATTI
InstaGas Comfort
17.1 x 17.1 x 26.2 inches
Ratings for FOGATTI (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Westinghouse Home Comfort Direct | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
Powerhouse Performance: The FOGATTI tankless water heater takes up a third of the space of traditional tank heaters but delivers 5 times the performance. With a high heating power of 170,000 BTU and a flow rate of 7.5 GPM, it provides endless hot water on demand, perfect for multitasking households
Instant Heating: Unlike traditional tank heaters, this tankless water heater gas delivers instant and endless hot water as water flows through. Whether it’s for showers, sinks, or appliances, even for 3-5 outlet points, it ensures uninterrupted hot water whenever you need it
Top 10
Best for Rheem
Best for High Efficiency
Best for Rheem
Best for 40 Gallon
Best for 50 Gallon
Best for Takagi
Best for Rheem
Best for AO Smith
Best for 3 GPM
Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 7.0 GPM, 160,000 BTUs
Rheem
RTG-70DVLN-3
10.27 x 13.5 x 24.2 Inches
46.5 Pounds
Ratings for Rheem (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| 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.
Stiebel Eltron Tankless Heater – Tempra 36 Plus – Electric, On Demand Hot Water, Eco, White
Stiebel Eltron
36 Plus
4.63 x 16.63 x 14.5 inches
19.0 pounds
Ratings for Stiebel Eltron (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Three-Fifteen.Inc | - | ✅ | ✅ | ✅ |
| Westcoastsales | - | ✅ | ✅ | ✅ |
| Yer lucky shop | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
| Industrial deals | - | ❌ | ❌ | ❌ |
Features
On-demand, continuous and unlimited supply of hot water
Sleek design saves space and no venting required
Top 12
Best for Gas Powered
Best Gas Water Heaters
Best for 30 Gallon
Best for 40 Gallon
Best for 75 Gallon
Best for 80 Gallon
Best for Tankless
APUS Natural Gas Tankless Water Heater 140,000 BTU Indoor Installation Up to 6.8 GPM, Zero Cold Water for Technology Instant Hot Water on Demand, Smart Wi-Fi App Control
APUS
AP-AWH-Q20NG
7.09 x 7.09 x 21.26 Inches
Ratings for APUS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| APUS WATER EQUIPMENT | - | ❌ | ❌ | ❌ |
Features
Instant Hot Water: This upgraded smart natural gas tankless water heater delivers consistent performance with its 140,000 BTU burner and durable oxygen-free copper heat exchanger. With the latest intelligent heating technology, it provides hot water in just 1 second, giving you instant comfort without the wait.
Zero Cold Water Tech - Instant Hot Water：Our tankless water heater gas system features APUS exclusive single-circulation technology that eliminates cold water wait time. This on demand water heater delivers instant hot water while its 24/7 ECO smart cycle saves 40% more energy than conventional hot water heaters.
Top 13
Best for 40 Gallon
Best for 50 Gallon
Best for Tankless
Best Tankless Water Heaters
Best for Noritz
Best for 10 GPM
Best for 11 GPM
MIZUDO Natural Gas Tankless Water Heater, 199,000 BTU, Indoor Installation, Max 10.3 GPM, WiFi&APP Control, Non Condensing, High Efficiency for Large Families Residential Whole House
MIZUDO
WCIU-HW199A1G-NG-M0
15.9 x 15.9 x 24.8 Inches
55.5 pounds
Ratings for MIZUDO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Mizudo Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
[Professional 199k BTU Tankless Water Heater]: Experience uninterrupted hot water delivery with 10.3 GPM flow capacity, designed to support large households with 5-7 fixtures simultaneously, providing hot water only when needed, making it an economically smart choice
[Smart WiFi Connectivity for Remote Management]: Control and monitor your gas tankless water heater from anywhere using the dedicated mobile application. Adjust temperature settings, create custom schedules, receive maintenance alerts, and track energy usage through your smartphone
Top 14
Best for Inline
Best for Electric
Best for NG
Best for Thermostat
Best for Residential
Best for Rheem
Best for Rheem
Best for AO Smith
Best for 5 GPM
Best for 9 GPM
Best for 10 GPM
Best for 11 GPM
Rheem 6.5kW 240V Point of Use Thermostatic Tankless Electric Water Heater
Rheem
RTEX-06T
10.875 x 10.875 x 5.875 inches
4.0 Pounds
Highly Efficient
Ratings for Rheem (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| Valley Deals AZ | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
Endless On-Demand Hot Water - Consistent hot water when you need it that never runs out
Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
Top 15
Best Water Heaters
Best for Gas Powered
Best for 30 Gallon
Best Tankless Water Heaters
Best for Rinnai
Best for 4 GPM
Best for 5 GPM
Best for 8 GPM
Best for 9 GPM
Best for 10 GPM
Ranein Propane Gas Tankless Water Heater, Indoor Max 8.5 GPM, 190,000 BTU Instant Hot Water Heater
Ranein
RH19K-LPG
15.08 x 15.08 x 24.25 inches
42.0 Pounds
Ratings for Ranein (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| Ranein Store | - | ❌ | ❌ | ❌ |
Features
Fans Placed Underneath: It will be more secure in terms of safety, and no smoke backflow will occur. The blower has large power and can automatically adjust the rotating speed according to the change of external wind pressure and the change of water temperature to provide sufficient oxygen for gas combustion, ensuring full combustion and safer use. Low noise and longer service life.
No Waiting Required: Unlike traditional tank water heaters, tankless water heaters eliminate the need for a 30-minute preheating wait time, allowing you to have unlimited hot water on demand.
Top 16
Best for Inline
Best for Tanked
Best for Whole House
Best for 20 Gallon
Best for Takagi
Best for Noritz
Best for Rinnai
Best for FOGATTI
Best for Eccotemp
Best for AO Smith
Best for 2 GPM
Best for 4 GPM
Best for 8 GPM
Best for 9 GPM
Best for 10 GPM
Best for 11 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
99.8% Energy efficient
Ratings for Rheem (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| GM Not Mo | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
| Columbiatradestock (S/N Info Recorded) | - | ❌ | ❌ | ❌ |
| Sunny ING | - | ❌ | ❌ | ❌ |
| Nantek | - | ❌ | ❌ | ❌ |
Features
ON/OFF Dial Control with adjustable digital temperature display
Self-modulating power control
FOGATTI Propane Gas Tankless Water Heater Indoor - Max 7.5 GPM 170,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 170S Series
FOGATTI
InstaGas Comfort
16.3 x 16.3 x 25.0 Inches
0.81
Ratings for FOGATTI (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Westinghouse Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
Powerhouse Performance: The FOGATTI tankless water heater takes up a third of the space of traditional tank heaters but delivers 5 times the performance. With a high heating power of 170,000 BTU and a flow rate of 7.5 GPM, it provides endless hot water on demand, perfect for multitasking households
Instant Heating: Unlike traditional tank heaters, this tankless water heater propane delivers instant and endless hot water as water flows through. Whether it’s for showers, sinks, or appliances, even for 3-5 outlet points, it ensures uninterrupted hot water whenever you need it
Top 18
Best for EcoSmart
Best for Takagi
Best for EcoSmart
Best for FOGATTI
Best for AO Smith
Best for 2 GPM
Best for 8 GPM
Best for 9 GPM
Best for 10 GPM
Best for 11 GPM
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
EcoSmart
ECO24
17.0 x 17.0 x 17.0 Inches
14.25 pounds
Ratings for EcoSmart (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
Sleek and compact design with digital output temperature display
ECOSMART tankless water heaters are 99.8-percent energy efficient
Top 19
Best for CAMPLUX
Best for Inline
Best for Gas Powered
Best for Battery
Best for Propane Liquid
Best for Outdoor
Best for Propane
Best Gas Water Heaters
Best for 80 Gallon
Best Tankless Water Heaters
Best for FOGATTI
Best for Eccotemp
Best for CAMPLUX
Best for 5 GPM
Best for 9 GPM
Best for 10 GPM
Best for 11 GPM
Best for 15 GPM
Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping Water Heater, 5L, AY132, White
CAMPLUX ENJOY OUTDOOR LIFE
AY132
14.8 x 11.42 x 4.33 Inches
10.0 pounds
Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Camplux | - | ✅ | ✅ | ✅ |
Features
Lightweight, Compact & Portable Design: The 10 pounds lightweight portable water heater's folding handle keeps it out of the way and enables easy setup outside.
Flow Rate & Temperature Specification: The temperature raise is 114.8℉ (46℃) at its highest point and 46.4℉ (8℃) is at its lowest point of 1.32 GPM. Also, 1.32 gallons of hot water can be produced per minute at the flow rate of 1.32 GPM.
Top 20
Best for Whole House
Best for Residential
Best for 30 Gallon
Best for Noritz
Best for 8 GPM
Best for 9 GPM
Best for 10 GPM
27kW Tankless Water Heater Electric, NOVIEEX 240V 3s Instant Hot Water Heater, Flow Rate Max 7.4 GPM, Supply for 3-4 Points, Indoor Installation, Heavy Duty Ideal for Whole House Use
NOVIEEX
DS-27
14.13 x 14.13 x 15.86 Inches
Ratings for NOVIEEX (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| NOVIEEX Global | - | ❌ | ❌ | ❌ |
Features
【WHOLE HOUSE HEAVY DUTY】 The NOVIEEX 27kW tankless hot water heater electric is a heavy-duty solution custom-built to satisfy full household demands. Designed to seamlessly supply larger homes, its streamlined wall-mount enclosure (14.13" x 15.86" x 3.18") saves 80% more space than mammoth 50+ gallon storage tanks, inserting perfectly into narrow closets or compact utility spaces.
【3-4 MULTI-POINT LUXURY FLOW】 It delivers a massive, industry-topping water flow of up to 7.4 Gallons Per Minute (GPM). This high-velocity output effortlessly services 3 to 4 water applications simultaneously. Fill a grand whirlpool bathtub, run the washing machine, and support multiple master showers concurrently without a single drop in temperature or water pressure.
Top 21
Best for High Efficiency
Westinghouse Smart Tankless Water Heater Gas Indoor, 10.3 GPM 199,000 BTU Natural Gas Whole House Instant Hot Water Heater, WiFi App & Voice Control, High Efficiency, Non-Condensing for 7 Fixtures
Westinghouse
HW199A0G-NG
15.9 x 15.9 x 24.8 Inches
Ratings for Westinghouse (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Westinghouse Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
【Endless Hot Water for Large Homes】Designed for whole-home performance, this natural gas tankless water heater delivers up to 10.3 GPM and 199,000 BTU to supply continuous hot water for 4+ bathrooms, showers, laundry, and appliances simultaneously without sacrificing water pressure or comfort.
【Smart WiFi App & Voice Control】Control your indoor tankless water heater from anywhere using the dedicated smartphone app or voice commands. Easily adjust temperature settings, monitor operation status, receive fault alerts, and enjoy a smarter, more convenient hot water experience.
Top 22
7kW Tankless Water Heater Electric 240V, On-Demand Instant Hot Water
WINTEMP
WM07V
10.3 x 10.3 x 8.5 inches
8.4 Pounds
Ratings for WINTEMP (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| WINTEMP | - | ❌ | ❌ | ❌ |
Features
Important Note: Before purchasing, please ensure this unit meets your installation requirements. The WM07V model is rated at 7kW (240V) with a maximum current of 29.1A. It requires 1 × 30 Amp double-pole breakers and 1 sets of 10 AWG wiring for installation, with 1/2" NPT water connections
Endless Hot Water: Advanced flow control technology automatically maintains water temperature, ensuring maximum efficiency and consistently comfortable hot water. It delivers up to 1.7 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-Ensure your hot water is never interrupted. In warmer southern regions, it is more suitable for sinks, office breakrooms, point-of-use, and low-flow applications, and can also be used as a booster heater. Ideal for providing hot water to faucets
Top 23
Best for 8 GPM
Mizudo 36kW Tankless Water Heater Electric, 240 Volt Instant Hot Water Heater, Up to 8.7 GPM for the Whole House Shower, 5-6 Points of Use, with LED Digital Display, Copper Cup Heating Element
MIZUDO
36kW
17.1 x 17.1 x 18.5 Inches
Ratings for MIZUDO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Mizudo Home Comfort Direct | - | ❌ | ❌ | ❌ |
Features
Note: MIZUDO 36kw 240V tankless water heater electric requires 4 pcs of 40 AMP two-pole breakers, 4 sets of 8 AWG wires and 3/4" NPT water connections. With a compact size of 17.1"H x 18.5"L x 3.7"W, our electric hot water heater saves over 87% of space compared to traditional tank water heaters, fitting easily into most corners of your home.
High Energy Efficiency & Cost Saving: Boasting 98% high energy efficiency, this electric tankless water heater heats up in just 3 seconds. It delivers a flow rate of up to 8.7 PM, supplying on-demand hot water for 5-6 points of use simultaneously. Additionally, it can reduce electricity costs by up to 60% compared to traditional tank-style heaters.
Top 24
Best for CAMPLUX
Best for Battery
Best for Outdoor
Best for CAMPLUX
Best for 2 GPM
Best for 9 GPM
Camplux 2.64 GPM Tankless , Outdoor Portable Gas Water Heater with Overheating Protection, Instant Propane Hot Water Heater for RV, Camping, Cabins, Barns, White
CAMPLUX ENJOY OUTDOOR LIFE
BD264N
13.0 x 13.0 x 21.7 inches
18.0 pounds
Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Camplux | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
𝐂𝐨𝐦𝐩𝐚𝐜𝐭, 𝐋𝐢𝐠𝐡𝐭 𝐖𝐞𝐢𝐠𝐡𝐭 𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞 𝐃𝐞𝐬𝐢𝐠𝐧 - 12.8 (L)*6.1(W)*21.65(H) inches, weight-18 lbs. Compact and portable design perfect for barns, cabins, outdoor instant hot shower and road trips
𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧 & 𝐔𝐬𝐞 - Simply connect the inlet and outlet pipes and gas regulator that come with this portable water heater, insert 2 D-cell batteries, then you are ready to use. Low water pressure start of 3.6 PSI allows you to enjoy 2.64 gallons of water in just a few minutes
Top 25
Best for 4 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)
| 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
CAMPLUX Climatech 7 Indoor Natural Gas Tankless Water Heater 4.22 GPM (Up to 5 GPM) 102,000 BTU(Real Data No Exaggeration), CSA Certified Gas Tankless Water Heater Indoor for Whole House, 2–4 Outlets
CAMPLUX ENJOY OUTDOOR LIFE
CA422WNG
6.9 x 6.9 x 24.2 Inches
Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| Amazon.com | - | ❌ | ❌ | ❌ |
Features
This natural gas tankless water heater indoor delivers up to 5 GPM and 102,000 BTU as a tankless gas hot water heater for 2–4 fixtures(Mobile Home, Tiny House, Apartment, Cabin). ±1°F control with flow sensor adjusting 20,000 times per second.
Unique Tempered Glass Smart diagnostic LED touchscreen in this gas tankless water heater indoor shows real-time flow, fan, and flame status for easy troubleshooting.
APUS 14kW Tankless Water Heater Electric, 240V Instant On Demand Hot Water Heater, Up to 3.3 GPM with LED Display, Space-Saving and Energy-Saving Whole House Water Heater Design
APUS
AP-ADSK140-H18
11.42 x 11.42 x 13.7 inches
12.79 pounds
99%
Ratings for APUS (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| APUS WATER EQUIPMENT | - | ❌ | ❌ | ❌ |
Features
Enjoy continuous hot water whenever you need it. The 14kW tankless water heater electric delivers up to 3.3 GPM for 1–2 uses at once, such as showers, sinks, or laundry. No preheating, no waiting, and no temperature drops
This electric water heater ultra-slim wall-mounted heater (13.7" × 11.42" × 3.54") saves up to 90% more space compared to traditional tanks, freeing up valuable space in your home. With 3/4" NPT connections and 240 V compatibility（requires 1×60 A breakers, 1 set of 6AWG cable), installation is easy and flexible—ideal for whole-house or point-of-use setups in bathrooms, kitchens, or laundry rooms.
Top 28
Tankless Water Heater, Camplux 4.22 GPM On Demand Propane Water Heater, Instant Hot Water Heater, Indoor, Gray
CAMPLUX ENJOY OUTDOOR LIFE
CA422
24.21 x 14.25 x 6.69 inches
26.46 pounds
Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Camplux | - | ✅ | ✅ | ✅ |
Features
Space Saving & Better Performance- It is only 1/4 the size of a 50 gallon tank water heater, yet it produces approximately 4.0 GPM of hot water through 102,000 BTU for both bathroom and kitchen hot water demand. The highly integrated components also provide greater safety from water pressure surges without the need to install an expansion tank
Fast & endless supply of hot water- The oxgen-free heat exchanger quickly heats the water to a maximum of 140℉ in 2 seconds and the hot water is quickly piped through to the shower and tap. No need to wait for the water temperature to heat up slowly like a tank water heater. After that it continues to operate at approximately 4.0 GPM for 40 minutes, which is enough time to produce almost 160 gallons of hot water
Top 10 7 GPM Tankless Water Heaters - Verified to Buy (September 2026)
- 1. 36kW Tankless Water Heater Electric, ThermoMate On Demand Instant Hot...
- 2. Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water...
- 3. Electrolux 14kW Tankless Water Heater Electric 240V - Smart WiFi...
- 4. Rheem 18kW 240V Tankless Electric Water Heater
- 5. Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water...
- 6. Rheem RTG-70XLP-3 High Efficiency Non-Condensing Outdoor Tankless Liquid Propane Water...
- 7. 27kW Tankless Water Heater Electric, APUS 240V On Demand Instant...
- 8. Electric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot...
- 9. FOGATTI Natural Gas Tankless Water Heater Indoor - Max 7.5...
- 10. Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water...
Top 10 7 GPM Tankless Water Heaters Brands on Amazon
Here is the list of top-rated brands that were evaluated by CherryPicks.
- thermomate
- Rheem
- Electrolux
- APUS
- WINTEMP
- FOGATTI
- Stiebel Eltron
- MIZUDO
- Ranein
- EcoSmart
Related 7 GPM Tankless Water Heaters Guides
For more personalized 7 GPM Tankless Water Heaters guides, Check those pages,
GPM
Top 10 7 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. Camplux : 2,734 Yearly Feedback , Avg. Ratings 4.7
- 2. Westcoastsales : 2,310 Yearly Feedback , Avg. Ratings 4.6
- 3. Mizudo Home Comfort Direct : 401 Yearly Feedback , Avg. Ratings 4.7
- 4. Amazon.com : 386 Yearly Feedback , Avg. Ratings 4.7
- 5. ThermoMate Official : 371 Yearly Feedback , Avg. Ratings 4.7
- 6. Westinghouse Home Comfort Direct : 265 Yearly Feedback , Avg. Ratings 4.8
- 7. Columbiatradestock (S/N Info Recorded) : 161 Yearly Feedback , Avg. Ratings 4.6
- 8. Three-Fifteen.Inc : 138 Yearly Feedback , Avg. Ratings 4.5
- 9. HTRM INC. : 136 Yearly Feedback , Avg. Ratings 2.1
- 10. Trena's Liquidation LLC : 61 Yearly Feedback , Avg. Ratings 3.7
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | Camplux | 2,734 | 4.7 |
| 🥈 | Westcoastsales | 2,310 | 4.6 |
| 🥉 | Mizudo Home Comfort Direct | 401 | 4.7 |
| 4 | Amazon.com | 386 | 4.7 |
| 5 | ThermoMate Official | 371 | 4.7 |
| 6 | Westinghouse Home Comfort Direct | 265 | 4.8 |
| 7 | Columbiatradestock (S/N Info Recorded) | 161 | 4.6 |
| 8 | Three-Fifteen.Inc | 138 | 4.5 |
| 9 | HTRM INC. | 136 | 2.1 |
| 10 | Trena's Liquidation LLC | 61 | 3.7 |
[Get] 7 GPM Tankless Water Heaters Deals (✅Exclusively for Prime)
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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 7 GPM Tankless Water Heaters to buy for new September 2026?
CherryPicks’s Methodology for Evaluating 7 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 7 GPM Tankless Water Heaters reviews based on our selection criteria. It helped us shortlist the top qualified and rated 7 GPM Tankless Water Heaters for Rough Plumbing, We found that most customers choose 7 GPM Tankless Water Heaters with an average price of $482.82, and the top brands are Westinghouse, Electrolux, EcoSmart, CAMPLUX ENJOY OUTDOOR LIFE, Rheem, thermomate, FOGATTI And Stiebel Eltron.
Then our expert-level editors reviewed all those quality items and selected the top 28 7 GPM Tankless Water Heaters for you, We have researched hundreds of sellers and picked the top sellers for Rough Plumbing, including Amazon Resale, Camplux, Westcoastsales, Mizudo Home Comfort Direct, Amazon.com, ThermoMate Official, Westinghouse Home Comfort Direct, Columbiatradestock (S/N Info Recorded), Three-Fifteen.Inc, HTRM INC., Trena's Liquidation LLC And Nantek. The 36kW Tankless Water Heater Electric, ThermoMate... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 743 consumers with an average rating of 4.2.
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 7 GPM Tankless Water Heaters to buy.
Looking for a great home and kitchen product reviewer? Jack is here to make sure you only buy the best home items for your budget. He is good at product testing, pushing them beyond their limits to discover what isn't obvious from just using products casually.