Top 29 20 Gallon Water Heaters on Amazon (Verified You can Buy)
Top 1
Best Water Heaters
Best for Tanked
Best for Electric
Best for NG
Best for Remote Control
Best for Timer
Best for Waterproof
Best for Residential
Best for Boiler
Best for 30 Gallon
Best for 40 Gallon
Best for 10 Gallon
Best for 30 Gallon
Best for 40 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
VEVOR Electric Water Heater, 18 Gallon Tank Instant Hot Water Heater, 1.6KW Tankless Water Heater with Knob Control, IPX4 Waterproof Side Connection On Demand Heaters for Shower, Bath
VEVOR
FJI-POR-70S2
16.1417 x 16.1417 x 30.7087 inches
53.0 Pounds
Ratings for VEVOR (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Suplander | - | ❌ | ❌ | ❌ |
Features
18-Gallon Water Capacity: With a 18-gallon/70L storage capacity, this heater provides ample hot water for family needs, including dishwashing and laundry. Its 1600W high-power heating reduces wait time for hot water at the faucet.
Immersion Heating Element: The extended immersion heating element ensures continuous hot water delivery for 24 hours. It heats water up to 167℉ / 75℃ and features an LED heating display and rotary temperature control, adjustable from 30℃ to 75℃ / 86℉ to 167℉.
Top 2
RARITAN Raritan 20-Gallon Hot Water Heater w/Heat Exchanger - 120V / 172011 /
Raritan
172011
18.0 x 18.0 x 29.5 inches
72.0 pounds
High Efficiency
Ratings for Raritan (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Jarboys Outdoors & Marine Supplies -AUTHORIZED | - | ✅ | ✅ | ✅ |
| The Factory Depot | 281 | ✅ | ✅ | ✅ |
| Autoplicity ✅ | 1,513 | ❌ | ❌ | ❌ |
| General Electronics and more! | 7,255 | ❌ | ❌ | ❌ |
| KART IT | 2,171 | ❌ | ❌ | ❌ |
Features
Raritan 20-Gallon Hot Water Heater w/Heat Exchanger - 120V
Top 3
Best for Tanked
Best for Electric
Best for Battery
Best for Compact
Best for Timer
Best for Waterproof
Best for Whole House
Best for 120 Volt
Best for Boiler
Best for 10 Gallon
Best for 60 Gallon
VEVOR Electric Tank Water Heater, 12 Gallon, 1600W Point-of-Use Hot Water Heater with LED Display, Knob Control, Side Outlet, 120V Storage Design with T&P Valve for Small Apartments & Studios, Gray
VEVOR
FJI-POR-50S2
16.1417 x 16.1417 x 23.622 Inches
40.12 pounds
Ratings for VEVOR (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| VEMIXO | - | ❌ | ❌ | ❌ |
Features
12-Gallon Capacity: Designed for small apartments, studio flats, or remote water points, our tank water heater fits 1-2 water outlets. It provides ample hot water for showers, handwashing, and dishwashing, meeting the daily needs of singles or couples
Fast Heating & Excellent Insulation: Our storage water heater features an extended immersion heating tube for fast, uniform heating. The 20 mm thick foam insulation layer minimizes heat loss, maintaining constant water temperature and saving energy costs
Top 4
Best for Thermostat
Best for Residential
Best for 30 Gallon
Best for 30 Gallon
Best for 40 Gallon
ThermoMate Tank Water Heater Electric, 18 Gallon Small Point of Use Residential Hot Water Heater for Washing & Shower, 120Volt 1500W Compact, Adjustable Thermostat, UL Listed
thermomate
ES2000
19.25 x 19.25 x 25.75 Inches
56.0 Pounds
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ThermoMate Official | - | ❌ | ❌ | ❌ |
Features
【18 Gallons point of use】 storage water heater provides ample hot water for sink washing, dishwasher, washing machine or 20 - 25mins shower. Factory setted temperature to 125°F. It can be adjusted from 90°F to 150°F through built-in thermostat
【25.5-inch low profile】 compact small water heater (120 Volt Hard Wired), independent installation or as booster in-line with a large hot water source, ideal for kitchen & bathroom sink, RV & boat, vacation cabin & camper, garage & barn, shop & salon
Top 5
Best for Electric
Best for Battery
Best for Compact
Best for Waterproof
Best for Residential
Best for High Efficiency
Best for 120 Volt
Best for Boiler
Best for 10 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
VEVOR 10 Gallon Electric Water Heater, Hot Water Heater 1600W, w/LED Display, Knob Control, IPX4 Waterproof, Side Connection On-Demand Heaters for Shower, Bath
VEVOR
FJI-POR-40S2
16.1417 x 16.1417 x 30.7087 Inches
37.5 pounds
Ratings for VEVOR (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| VEMIXO | - | ❌ | ❌ | ❌ |
Features
10-Gallon Water Capacity: With a 10-gallon/40L storage capacity, this heater provides ample hot water for family needs, including dishwashing and laundry. Its 1600W high-power heating reduces wait time for hot water at the faucet.
Immersion Heating Element: The extended immersion heating element ensures continuous hot water delivery for 24 hours. It heats water up to 167℉ / 75℃ and features an LED heating display and rotary temperature control, adjustable from 30℃ to 75℃ / 86℉ to 167℉.
Thermomate Tank Water Heater - 10 Gallon Point of Use Hot Water Heater, 120V 1500W, Adjustable Thermostat, UL Listed (ES1000)
thermomate
ES1000
14.75 x 14.75 x 24.5 inches
40.0 Pounds
Ratings for thermomate (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| ThermoMate Official | - | ❌ | ❌ | ❌ |
Features
【10 Gallons point of use】 provide enough hot water for sink washing, dishwasher, washing machine or 10 - 15mins quick shower. Factory set temperature to 125°F. It can be adjusted between 90°F and 150°F through built-in thermostat
【24.5-inch low profile】 compact small water heater (120 Volt Hard Wired), independent installation or as booster in-line with a large hot water source, ideal for kitchen & bathroom sink, RV & boat, vacation cabin & camper, garage & barn, shop & salon
Top 7
Best for Inline
Best for Tanked
Best for Electric
Best for Battery
Best for LP
Best for NG
Best for Compact
Best for Mini
Best for Outdoor
Best for Thermostat
Best for Timer
Best for Waterproof
Best for Indoor
Best for Under Sink
Best for Wall
Best for Residential
Best for 120 Volt
Best for Boiler
Best for 10 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
Best for Stiebel Eltron
Best for AO Smith
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
Bosch
ES 2.5-1M WIR S3100
13.75 x 10.75 x 13.75 inches
15.5 pounds
98%
Ratings for Bosch (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
Top 8
HoldRite QuickStand 21-1/4 Inch Wall Mounted Water Heater Platform, Up to 20 Gallons, Steel Drain Fitting, Hanging, 40-SWHP-WM
Holdrite
40-SWHP-WM
0.0 x 0.0 x 0.0 inches
8.95 pounds
Ratings for Holdrite (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
WATER HEATER WALL MOUNT: Hot water heater stand is ideal for suspending water heaters in schools, offices, restaurants, and small businesses; pre-assembled and watertight; the platform also serves as a drain pan with a 1-inch drain fitting
COMPATIBILITY: This water tank stand can be used with CPVC, PVC, or welded steel drain fittings
Top 9
Best for 30 Gallon
CAMPLUX Hot Water Heaters 18 Gallon, Electric Water Heater 120V 1500W, Come with Reliable T&P Relief Valve, Built-in Anode Rod for Tank Water Heaters, UL Listed ME200B
CAMPLUX ENJOY OUTDOOR LIFE
ME200B
19.25 x 19.25 x 25.75 inches
56.0 Pounds
Ratings for CAMPLUX ENJOY OUTDOOR LIFE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| Camplux | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
Large Capacity Design- 18 gallons of sufficient capacity to meet your home's hot water needs. Allowing you to enjoy the convenience of hot water in about 60 minutes. It greatly saves you time waiting for hot water
Save Energy & Low Consumption- Experience uninterrupted warmth with our on-demand 18-gallon water heater, equipped with 24-hour insulation. It can be adjusted between 91°F and 150°F through the built-in thermostat. Minimizing heat loss, it delivers hot water at your preferred temperature day or night
Top 10
Best for 10 Gallon
Electric Tank Water Heater, 8-Gallon Under Sink Instant Hot Water Tank，Equipped with Digital Temperature Display for RV, Camper, Kitchen, Food Truck，Wall or Floor Mounted, Grey
Feelrogast
WHC-GY080
13.39 x 13.39 x 14.17 inches
Ratings for Feelrogast (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Feelrogast Official | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
【Instant Hot Water & Precision Control】: This instant electric water heater delivers 99% thermal efficiency, so you can enjoy hot water instantly and say goodbye to the long wait times of traditional water heaters. With precise temperature control (86°F-167°F), you can customize the warmth to your exact preference.
【Precision Digital Temperature Display】: Our water heater is equipped with a clear digital screen. You can monitor the water temperature in real-time and make precise adjustments instantly. Digital display ensures a reliably comfortable and safe experience in everyday life.
18kW Tankless Water Heater Electric 240V WINTEMP, On Demand Instant Hot Water Heater, Up to 4.3 GPM, with LED Temperature Display, Whole House Hot Water Supply, WiFi Control, ETL Certified
WINTEMP
WN18
19.1 x 11.1 x 4.0 inches
12.0 pounds
High Efficiency
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, 150 Amp Household Service Recommended. The WN18 model is rated at 18KW (240V) with a maximum amperage of 75A. It requires 2 x 40 Amp DP breakers and 2 x 8/2 AWG wiring with ground. 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 4.3 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 12
Best for Compact
Best for Mini
Best for Under Sink
Best for 120 Volt
Best for 50 Gallon
Best for 100 Gallon
110V-120V 1.5Kw Electric Tank Hot 2.5 Gallon Water Heater Storage，Small Under Sink Counter RV TR Endless Trailer Kitchen Compact Point-of-Use,2 PCs 16” Long 1/2”FIP Stainless Steel Water Hoses 9.5L
BISELONG
BI-2.5
11.2 x 11.2 x 11.8 inches
9.5 Pounds
Ratings for BISELONG (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| BISELONG | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ✅ | ✅ | ✅ |
Features
【SAFE DURABLE & LONGEVITY】Made of stainless steel and never rust，Anti-leakage plug，Multiple safety protection functions protect you from the risk of scald, leakage or other injury.Premium plastic shell is corrosion resistant，This mini hot water heater is ideal for kitchen, bar, school, hospital, community and RV.
【SMART INVERTER FOR ENERGY SAVING】Automatic heat preservation and storage of hot water, 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%，Maximum temperature149℉，The built-in smart chip heats up to the temperature you set, and automatically Insulation when heated to the specified temperature.
Top 13
Best Water Heaters
Best for Digital
Best for Timer
Best for 30 Gallon
Best for 40 Gallon
Best for 50 Gallon
Best for 100 Gallon
2000W Immersion Water Heater,Submersible Water Heater with 304 Stainless Steel Guard & Digital LCD Thermometer,Fast Heating for 5 Gallons of Water in Minutes for Bucket,Bathtub,Basin,Camping,Home
Supellerous
Ratings for Supellerous (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Supellerous US | - | ❌ | ❌ | ❌ |
Features
【Fast to Heat, Quick to Use】This immersion water heater features a powerful 2000W design, heating 5 gallons of water to a comfortable temperature in just minutes.Whether your home water heater fails, you're camping outdoors, or you need to bathe your pet or soak your feet, this heater provides hot water anytime. For larger water volumes like bathtubs or small pools, simply extend the heating time.
【Stainless Steel, Safe Protection】This submersible water heater is made of high-quality 304 stainless steel, durable and rust-proof. The protective guard prevents direct contact with the heating element, reducing the risk of burns or damage. Please be sure to follow the safety steps: fully submerge in water before use, keep the plug and socket dry, and unplug the heater before removing it from water.
Top 14
Best Water Heaters
Best for Waterproof
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
Water Heater Electric, 2000W Fast Heating Portable Water Heater with 304 Stainless Steel Guard & Digital LCD Thermometer, Heats 5 Gallons in Minutes for Camping, Bath & Small Pool
Eaakkoom
MJ-R13
3.6 x 3.6 x 11.4 inches
Ratings for Eaakkoom (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Eaakkoom | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
Safety Design: This instant water heater is UL-certified, featuring a high-quality stainless steel protective guard with anti-scald functionality. It effectively prevents direct contact between the internal heating element and humans or animals, providing reliable safety protection, while being rust-resistant and durable.The heating element inside uses a double tube annular shape, which has more contact surfaces with water and works more quickly and efficiently than other products. You can enjoy comfortable hot water anytime, anywhere.
uper Fast Heating: This above ground pool heater operates at 2000W with an AC voltage range of 110-125V. Ideal for camping or traveling, this high-power bucket heater can quickly heat up to 5 gallons of water in just minutes. Its porous design allows heat to dissipate into the water faster through the holes on the casing, ensuring excellent thermal conductivity; the integrated design enhances insulation and airtightness for better performance.
Top 15
Best for Tanked
Best for LP
Best for Mini
Best for Under Sink
Best for Wall
Best for 10 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
Best for AO Smith
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
Bosch
ES4
13.75 x 13.5 x 13.75 inches
17.3 Pounds
98% thermal efficiency
Ratings for Bosch (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
Electric Tankless Water Heater 110V 3000W, Under Sink Instant Hot Water Heater with Digital Display, Point of Use Portable Mini Heater for Kitchen Bathroom Sink
OVAS HOO
HME-15
7.5 x 7.5 x 9.25 inches
2.4 Pounds
Ratings for OVAS HOO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon Resale | - | ❌ | ❌ | ❌ |
| OVASHOO | - | ❌ | ❌ | ❌ |
Features
Important Safety & Pre-Installation Notice：Be sure to read the user manual thoroughly prior to setup. Please note that trace amounts of water may be present inside the unit from factory quality testing—this is normal and does not affect performance.
Electrical & Connection Requirements：This 3000W on-demand water heater is designed for 110V systems. It must be connected to a 30A breaker using 10AWG copper wire. It comes with standard G1/2" inlet and outlet connections for easy hookup
Top 17
Best for Compact
Best for Under Sink
Best for 30 Gallon
Best for 40 Gallon
Best for 100 Gallon
Best for Takagi
Best for FOGATTI
Best for AO Smith
Best for 9 GPM
LFEVTZ 110V Electric Tankless Water Heater 3000W, Instant Under Sink Hot Water Heater with Digital Display, Portable Mini Water Heater for Kitchen, Bathroom, RV
LFEVTZ
LZ-RESHUIQI-1
4.5 x 4.5 x 8.5 Inches
Ratings for LFEVTZ (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| KuangShengkejiyouxiangongsi | - | ❌ | ❌ | ❌ |
Features
【Instant Hot Water, No Waiting】With the LFEVTZ 110V mini tankless water heater, enjoy hot water in seconds—no preheating required. Advanced heating technology delivers temperatures from 82°F (0.3 GPM) to 131°F (0.5 GPM), eliminating wait time at your sink.
【Compact & Space-Saving Design】Designed for small spaces like kitchens, RVs, and camping setups, this compact unit mounts on the wall to save space. Water temperature adjusts based on flow rate—lower flow = higher temperature, giving you flexible control for daily tasks like washing dishes, food, hands, and more.
Immersion Water Heater,2000W Portable Electric Heater with 304SS Guard
Eaakkoom
HT2000W
3.6 x 3.6 x 10.2 inches
1.0 pounds
Ratings for Eaakkoom (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Eaakkoom | - | ❌ | ❌ | ❌ |
Features
【2000W High Power Water Heater】The portable immersion water heater has a power of 2000W and can heat 5 gallons of water in minutes. The heating element inside uses a double tube annular shape, which has more contact surfaces with water and works more quickly and efficiently than other products. You can enjoy comfortable hot water anytime, anywhere.
【 Safe Design ]The electronic immersion water heater comes with a high-quality stainless steel protective cover, which effectively preventing the heating element from directly contacting people or animals, and preventing burns. It is rust resistant and durable, making it safer to use. The wire is made of pure copper wire with a copper core of 15AWG, so that you use more at ease, designed for long-term use. Please note: People and animals should not be in the water while the heater is working.
Top 19
Best for Tanked
Best for Battery
Best for Outdoor
Best for Remote Control
Best for Timer
Best for Waterproof
Best for 30 Gallon
Best for 50 Gallon
Best for 60 Gallon
Best for 100 Gallon
Immersion Water Heater Electric, Portable Bucket Heater with 304 Stainless Steel,Submersible Water Heater Heats up 5 Gallons of Water in Minutes for Home, Camping, and Outdoor Use
Eaakkoom
MJ-R13
3.6 x 3.6 x 11.4 Inches
Ratings for Eaakkoom (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Eaakkoom | - | ❌ | ❌ | ❌ |
Features
Safety Design：EAAKKOOM instant water heater has passed UL certification testing and features a high-quality stainless steel protective cover, effectively preventing direct contact between heating elements and people or animals. The rust-resistant design ensures durability. Our immersion water heater is equipped with intelligent temperature control, automatically cutting off power when water temperature reaches 75°C (165°F).Warning:Always submerge the heater in water before plugging it into the outlet. Ensure the heater is fully immersed to prevent fire hazards.
very easy to use: Immerse the electric water heater in water, plug it into any grounded 110-volt AC socket, set the temperature you need and press the switch button. You will quickly get the hot water you need in a short time.
Top 20
Best for Inline
Best for Electric
Best for Digital
Best for Indoor
Best for Whole House
Best for 100 Gallon
Best for Takagi
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
18kW Tankless Water Heater Electric, NOVIEEX 240V 3s Instant Hot Water Heater, Flow Rate Max 4.9 GPM, Supply for 2-3 Points, Indoor Installation, Ideal for Apartment, Garage, Salon, Bathroom, Kitchen
NOVIEEX
DS-18
11.14 x 11.14 x 15.86 inches
Ratings for NOVIEEX (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| NOVIEEX Global | - | ❌ | ❌ | ❌ |
| Woot | 118 | ❌ | ❌ | ❌ |
Features
【MEDIUM HOME SOLUTION】 The NOVIEEX 18kW electric tankless water heater is specifically engineered for small-to-medium-sized homes, condos, and apartments with 2-3 simultaneous water needs. Its sleek, ultra-thin wall-mount profile (11.14" x 15.86" x 3.18") frees up 80% more space compared to obsolete, bulky storage tanks, maximizing spatial efficiency in your basement, utility closet, or garage.
【HIGH CAPACITY FLOW】 It delivers a powerful water flow rate of up to 4.9 Gallons Per Minute (GPM). This high capacity easily accommodates multiple running fixtures at once, allowing family members to run a shower, wash dishes in the kitchen sink, and operate the laundry machine concurrently without any drop in temperature or water pressure.
GE APPLIANCES GE Smart Water Heater | Electric Water Heater with Built-In Wifi | 30 Gallon | 240 Volt | Stainless Steel, Gray (GE30S10BLM)
GE
GE30S10BLM
22.0 x 22.0 x 42.0 inches
101.0 Pounds
Energy Star certified
Ratings for GE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
Features
Real Capacity - Get the most hot showers from the only electric hot water heaters that holds a true 30 gallons of water
Built-in WiFi - Easily adjust temperatures, set vacation mode schedules, and receive notifications with Built-in WiFi powered by SmartHQ
Rheem Mini-Tank Electric Water Heater, 2.5 Gallon
Rheem
PROE2 1 RH MT
11.0 x 11.0 x 17.0 inches
17.6 Pounds
Ratings for Rheem (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| eFaucets | 9,712 | ❌ | ❌ | ❌ |
| Amazon.com | - | ❌ | ❌ | ❌ |
| Amazon Resale | - | ❌ | ❌ | ❌ |
Features
2.5-gallons of efficient hot water where you need it
Easy to install point-of-use hot water
2000W Immersion Water Heater Electric, Fast Heating Portable Water Heater with 304 S S Guard & LCD Thermometer, Bucket Heater for Home Camping Bath Pool Outdoor Use
HUVOPUMO
Ratings for HUVOPUMO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| HUVOPUMO Brand | - | ❌ | ❌ | ❌ |
Features
2000W FAST HEATING: This high-power immersion water heater can rapidly heat 5 gallons of water within minutes, featuring a porous design with exceptional thermal conductivity. For larger volumes of water, extended heating times may be required, or the use of two or more immersion water heater
Protective Design: It is equipped with a high-quality stainless steel protective cover that effectively prevents direct contact between the heating element and people or animals. With an integrated design, the insulation and airtightness are better
Top 24
Best for Inline
Best for Tanked
Best for Whole House
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 7 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
Top 25
HoldRite QuickStand 24 Inch Wall Mounted Water Heater Platform, Up to 20 Gallons, Steel Drain Fitting, Hanging, 30-SWHP-WM
Holdrite
30-SWHP-WM
27.0 x 27.0 x 5.0 Inches
21.0 pounds
High
Ratings for Holdrite (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Voomi Supply | - | ❌ | ❌ | ❌ |
| eFaucets | 9,712 | ❌ | ❌ | ❌ |
Features
WATER HEATER WALL MOUNT: Hot water heater stand is ideal for suspending water heaters in schools, offices, restaurants, and small businesses; pre-assembled and watertight
COMPATIBILITY: This water tank stand can be used with CPVC, PVC, or welded steel drain fittings
2000W Immersion Water Heater, Portable Electric Water Heater with 304 Stainless Steel & LCD Thermometer – Rapidly Heat 5 Gallons of Water in Minutes for Buckets, Bathtubs & Small Pools
YOUAWE
Ratings for YOUAWE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| YOUAWE Direct | - | ❌ | ❌ | ❌ |
Features
【2000W SUPER FAST HEATING】 Experience rapid heating with our powerful 2000W immersion water heater. Unlike low-wattage alternatives that leave you waiting, this electric water heater rapidly heats up to 5 gallons of water in just minutes—perfect for a bathtub, small pool without the wait. Save time and energy while enjoying instant hot water on demand.
【304 STAINLESS STEEL & ANTI-SCALD DESIGN】This portable water heater features a high-quality 304 stainless steel cover with anti-scald protection, preventing direct contact between the heating element and users for safer. The porous cover design provides excellent thermal conductivity, allowing heat to dissipate into the water more quickly. The premium stainless steel material effectively resists rust, corrosion, and scaling—say goodbye to rust stains.
2000W Immersion Water Heater UL Listed,Portable Electric Water Heater with 304 SS Anti-scalding,Updated with Digital Thermometer,S Hook,2 Reusable Straps,Heats up to 5 gallons of Water in Minutes
Dommsinon
HT2000
2.2 x 2.2 x 9.8 inches
Ratings for Dommsinon (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Donsin-Care | - | ❌ | ❌ | ❌ |
Features
【High Power Fast Water Heater】- The electric water heater has a power of 2000W and a voltage of 110-125V. It will quickly heat 5 gallons of water in a few minutes. The bucket heater will take about 30 minutes to heat the water to 104 degrees Fahrenheit (longer in winter).
【Portable & Widely Application】- Immersed electric water heaters can be used in non-conductive containers such as buckets, basins, bathtubs, and mini inflatable swimming pools. With this immersion heater, it's more easy to enjoy a comfortable bathing, happy inflatable pool playing time, or warming foot bath even on cold winter days. It is also very suitable for farm feeding, pets bathing, winter car washing, and quickly get hot water with your RV when traveling or camping outside. Portable design, you can enjoy hot water anytime and anywhere.
Top 28
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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 29
RHEEM/RICHMOND 6ep20-1, 2000 W, 120 Vac, Tank Richmond Electric Water Heater, 20 Gal, 20 gallon
Richmond
6EP20-1
23.3 x 21.3 x 28.0 inches
69.0 pounds
Ratings for Richmond (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| 67 Hardware | - | ✅ | ✅ | ✅ |
Features
Item Weight: 69.0 lb
Country of Origin: United States
Top 10 20 Gallon Water Heaters - Verified to Buy (September 2026)
- 1. VEVOR Electric Water Heater, 18 Gallon Tank Instant Hot Water...
- 2. RARITAN Raritan 20-Gallon Hot Water Heater w/Heat Exchanger - 120V...
- 3. VEVOR Electric Tank Water Heater, 12 Gallon, 1600W Point-of-Use Hot...
- 4. ThermoMate Tank Water Heater Electric, 18 Gallon Small Point of...
- 5. VEVOR 10 Gallon Electric Water Heater, Hot Water Heater 1600W,...
- 6. Thermomate Tank Water Heater - 10 Gallon Point of Use...
- 7. Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5)...
- 8. HoldRite QuickStand 21-1/4 Inch Wall Mounted Water Heater Platform, Up...
- 9. CAMPLUX Hot Water Heaters 18 Gallon, Electric Water Heater 120V...
- 10. Electric Tank Water Heater, 8-Gallon Under Sink Instant Hot Water...
Top 10 20 Gallon Water Heaters Brands on Amazon
Here is the list of top-rated brands that were evaluated by CherryPicks.
- VEVOR
- Raritan
- thermomate
- Bosch
- Holdrite
- CAMPLUX ENJOY OUTDOOR LIFE
- Feelrogast
- WINTEMP
- BISELONG
- Supellerous
Related 20 Gallon Water Heaters Guides
For more personalized 20 Gallon Water Heaters guides, Check those pages,
Gallon
Top 10 20 Gallon 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 : 264,925 Yearly Feedback , Avg. Ratings 4.8
- 2. The Factory Depot : 134,802 Yearly Feedback , Avg. Ratings 4.7
- 3. Autoplicity ✅ : 36,619 Yearly Feedback , Avg. Ratings 4.5
- 4. KART IT : 26,995 Yearly Feedback , Avg. Ratings 4.6
- 5. General Electronics and more! : 9,317 Yearly Feedback , Avg. Ratings 4.7
- 6. eFaucets : 7,050 Yearly Feedback , Avg. Ratings 4.4
- 7. VEMIXO : 3,591 Yearly Feedback , Avg. Ratings 4.1
- 8. Jarboys Outdoors & Marine Supplies -AUTHORIZED : 2,888 Yearly Feedback , Avg. Ratings 4.8
- 9. Suplander : 2,884 Yearly Feedback , Avg. Ratings 4.0
- 10. Camplux : 2,734 Yearly Feedback , Avg. Ratings 4.7
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | Woot | 264,925 | 4.8 |
| 🥈 | The Factory Depot | 134,802 | 4.7 |
| 🥉 | Autoplicity ✅ | 36,619 | 4.5 |
| 4 | KART IT | 26,995 | 4.6 |
| 5 | General Electronics and more! | 9,317 | 4.7 |
| 6 | eFaucets | 7,050 | 4.4 |
| 7 | VEMIXO | 3,591 | 4.1 |
| 8 | Jarboys Outdoors & Marine Supplies -AUTHORIZED | 2,888 | 4.8 |
| 9 | Suplander | 2,884 | 4.0 |
| 10 | Camplux | 2,734 | 4.7 |
[Get] 20 Gallon Water Heaters Deals (✅Exclusively for Prime)
What does "Amazon Fulfilled" Mean?
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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 20 Gallon 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 20 Gallon Water Heaters to buy for new September 2026?
CherryPicks’s Methodology for Evaluating 20 Gallon 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 161 of 20 Gallon Water Heaters reviews based on our selection criteria. It helped us shortlist the top qualified and rated 20 Gallon Water Heaters for Rough Plumbing, We found that most customers choose 20 Gallon Water Heaters with an average price of $371.13, and the top brands are GE, VEVOR, CAMPLUX ENJOY OUTDOOR LIFE, Rheem, thermomate, Holdrite And Raritan.
Then our expert-level editors reviewed all those quality items and selected the top 29 20 Gallon Water Heaters for you, We have researched hundreds of sellers and picked the top sellers for Rough Plumbing, including Amazon Resale, Woot, The Factory Depot, Autoplicity ✅, KART IT, General Electronics and more!, eFaucets, VEMIXO, Jarboys Outdoors & Marine Supplies -AUTHORIZED, Suplander, Camplux And Voomi Supply. The VEVOR Electric Water Heater, 18 Gallon Tank Ins... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 59 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 20 Gallon Water Heaters to buy.
Hunter Lambrick is a contributing writer on the Cherrypicksreview platform who specializes in writing articles on outdoor events and home tool products. He has been doing this for a while now and has developed a wealth of experience in it.