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Water Heaters Comparison - April 2026
| 1 Best Choice  9.9Exceptional | 2  9.8Exceptional | 3 Best Value 9.7Exceptional | 4  9.6Exceptional | 5  9.5Excellent | 6  9.4Excellent | 7  9.3Excellent |
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ModelNEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU | Model EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5 | Model EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5 | Model EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology | Model GE Appliances 18 Gallon Versatile Plug and Play Electric Water Heater with Adjustable Thermostat, Easily Installs Where You Want It, 120 Volt | Model Rheem 11kW 240V Tankless Electric Water Heater | Model VEVOR Electric Water Heater, 10 Gallon Tank Instant Hot Water Heater, 1.6Kw Tankless Water Heater w/LED Display,Knob Control, IPX4 Waterproof Side Connection On Demand Heaters for Shower, Bath |
BrandRinnai | Brand EcoSmart | Brand EcoSmart | Brand EcoSmart | Brand GE | Brand Rheem | Brand VEVOR |
Reviews | Reviews | Reviews | Reviews | Reviews  | Reviews | Reviews |
Features | ||||||
Easy installation 7.0 | Easy installation 8.4 | Easy installation 8.4 | Easy installation  9.1 | Easy installation 8.6 | Easy installation 7.2 | Easy installation 7.0 |
Temperature control 7.0 | Temperature control 8.6 | Temperature control 8.6 | Temperature control 8.9 | Temperature control 8.1 | Temperature control 8.6 | Temperature control 7.7 |
Tech support 7.0 | Tech support 7.2 | Tech support 7.2 | Tech support 7.7 | Tech support 8.6 | Tech support 8.1 | Tech support 7.2 |
Efficient energy use 7.0 | Efficient energy use 8.6 | Efficient energy use 8.6 | Efficient energy use 9.3 | Efficient energy use 8.4 | Efficient energy use 9.6 | Efficient energy use 8.9 |
Tech Specs | ||||||
colorSilver | color White | color White | color White | color Gray | color Gray | color White |
wattage98 watts | wattage 27 KW | wattage 27 KW | wattage 13000 watts | wattage 14.4 KW | wattage 11 KW | wattage 1.6E+3 |
product dimensions18.5"W x 30.11"H | product dimensions 17W x 17H | product dimensions 17W x 17H | product dimensions 8"W x 11.5"H | product dimensions 19.25W x 25.75H | product dimensions 8.25"W x 12.63"H | product dimensions 16.1W x 21.5H |
item weight55 pounds | item weight 10.98 pounds | item weight 10.98 pounds | item weight 6.5 pounds | item weight 54 pounds | item weight 7.04 pounds | item weight 37.5 pounds |
item package quantity1 | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 | item package quantity 1 |
mounting typeWall | mounting type Wall | mounting type Wall | mounting type Wall | mounting type Floor | mounting type Wall | mounting type Floor |
heat output199000 British Thermal Units | heat output 27 Kilowatts | heat output 27 Kilowatts | heat output 11 Kilowatts | heat output 140 Degrees Fahrenheit | heat output 11 Kilowatts | heat output - |
special featuresSmart Sense gas control system, Versa Vent | special features LED Display | special features LED Display | special features LED Display | special features - | special features LED Display | special features Foam Insulation, Enamel Coating, Rotary Temperature Control, LED Display |
voltage120 Volts | voltage 240 Volts | voltage 240 Volts | voltage 220 Volts | voltage 120 Volts | voltage 240 Volts | voltage - |
size11.1 GPM | size 17 x 17 x 3.5 | size 17 x 17 x 3.5 | size 12 x 8 x 4 | size 18 Gallon | size - | size 10 Gal |
batteries requiredNo | batteries required No | batteries required No | batteries required - | batteries required No | batteries required No | batteries required No |
included components- | included components electric tankless water heater | included components electric tankless water heater | included components electric tankless water heater | included components Water Heater | included components Fittings, Aerators | included components Water Heater x 1 |
style- | style ECO 27 | style ECO 27 | style ECO 11 | style Indoor Installation | style Point-of-Use | style 10 Gal |
is electricNo | is electric - | is electric - | is electric Yes | is electric Yes | is electric Yes | is electric Yes |
maximum flow rate11 Gallons Per Minute | maximum flow rate 6.6 Gallons Per Minute | maximum flow rate 6.6 Gallons Per Minute | maximum flow rate 3.1 Gallons Per Minute | maximum flow rate - | maximum flow rate 2.68 Gallons Per Minute | maximum flow rate - |
maximum temperature140 Degrees Fahrenheit | maximum temperature 120 Degrees Fahrenheit | maximum temperature 120 Degrees Fahrenheit | maximum temperature 140 Degrees Fahrenheit | maximum temperature - | maximum temperature - | maximum temperature 167 Degrees Fahrenheit |
batteries included- | batteries included No | batteries included No | batteries included No | batteries included - | batteries included No | batteries included - |
warranty description- | warranty description Limited Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater does not cover labor or any incidental damages. Proper and timely registration is required, or warranty is void. | warranty description Limited Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater does not cover labor or any incidental damages. Proper and timely registration is required, or warranty is void. | warranty description Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages. | warranty description 8 years tank & parts 1 year labor | warranty description - | warranty description - |
maximum operating pressure150 Pound per Square Inch | maximum operating pressure - | maximum operating pressure - | maximum operating pressure - | maximum operating pressure 150 Pound per Square Inch | maximum operating pressure 150 | maximum operating pressure - |
efficiencyHigh (UEF .98) | efficiency - | efficiency - | efficiency 99.8 % | efficiency - | efficiency 99.8% | efficiency - |
pattern- | pattern Water Heater | pattern Water Heater | pattern Water Heater | pattern - | pattern - | pattern - |
maximum pressure- | maximum pressure 150 Pound per Square Inch | maximum pressure 150 Pound per Square Inch | maximum pressure - | maximum pressure 150 Pound per Square Inch | maximum pressure - | maximum pressure - |
shape- | shape Rectangle | shape Rectangle | shape - | shape - | shape Rectangle | shape - |
Review- | Review - | Review - | Review | Review - | Review - | Review - |
Available On   | Available On  | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1RinnaiNEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
7.0 Easy installation7.0 Temperature control7.0 Tech SupportWhy we love it
Compact design fits small spaces.
Endless hot water for multiple users.
Easy electronic adjustments.
-
9.8
2EcoSmart18% Off
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
8.6 Temperature control8.6 Efficient Energy Use8.4 Easy installationWhy we love it
Never run out of hot water.
Compact, wall-mounted design saves space.
Reduces energy consumption and costs.
-
9.7
3EcoSmart22% Off
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
8.6 Temperature control8.6 Efficient Energy Use8.4 Easy installationWhy we love it
Never run out of hot water.
Compact, wall-mounted design saves space.
Reduces energy consumption and costs.
Our ranking system
At bestchoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
