Looking Beyond the Thermomate 11kW Electric Tankless Water Heater? 6 Alternatives Worth a Look
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You are looking at thermomate 11kw electric tankless water heater alternatives because the original unit has specific limits. The Thermomate 11kW provides stable temperature control within 1°F and fits tight spaces with its 11.8-inch width. It delivers 2.15 GPM at a 35°F rise, which suits single bathroom point-of-use needs. The self-modulating technology saves energy by adjusting power to flow rate. ETL certification ensures safety with overheating protection.
You might want a different model if you need higher flow, smart controls, or a unique shape. Some buyers prefer digital displays for clearer feedback. Others seek Wi-Fi connectivity for remote management. This list includes 6 options that share the 11 kW electric spec. These alternatives overlap with the original in voltage and wattage but differ in dimensions, features, or flow characteristics. You can compare the specs to find the best fit for your installation.
Key Differences Between Options
Thermomate 11 kW Electric Tankless Water Heater
This model shares the same 11 kW power and 240V requirement as the Thermomate. The main difference is physical size. It measures 7.09 by 10.6 inches, which is significantly narrower than the original’s 11.8-inch width. This compact footprint makes it easier to mount in very tight spots. It retains the ETL safety certification. You get similar heating performance for point-of-use sinks. Choose this if your wall space is the primary constraint rather than overall unit dimensions.
WINTEMP 11 kW 2.6 GPM Tankless Water Heater
The WINTEMP unit also uses 11 kW of power at 240V. It features a square design measuring 9.7 by 14.1 inches. This is slightly narrower than the Thermomate but taller. It includes ETL certification for safety. The build quality focuses on reliable point-of-use heating. It is a straightforward electric heater without extra smart features. Pick this alternative if you want a similar power output but prefer a different mounting profile. It fits well where standard wall space is available but width is limited.
Westinghouse 11 kW Smart Wi-Fi Tankless Water Heater
This Westinghouse heater offers 11 kW of power at 240V. It adds WiFi connectivity for remote control. The dimensions are 9.56 by 12.6 inches. This is narrower than the Thermomate’s 11.8-inch width. It includes ETL certification. The smart features allow you to adjust settings from a distance. This is useful for modern homes with integrated systems. Choose this option if you want precise digital control and remote access. It sacrifices some compactness for added technology and verified safety standards.
Garvee 11 kW Square Metal Tankless Heater
The Garvee heater provides 11 kW of power at 240V. It has a slim profile measuring 14.2 by 2.99 inches. This is much thinner than the Thermomate. It lacks smart features or remote controls. The design focuses on fitting into tight spaces. It is ideal for installations where depth is restricted. You get reliable heating for single fixtures. Select this alternative if you need a very low-profile unit. It gives up advanced controls for a minimal footprint that blends into tight walls.
WINTEMP 11kW 240V Electric Tankless Water Heater
This WINTEMP model delivers 11 kW at 240V. It measures 9.7 by 14 inches. This is narrower than the Thermomate. It includes ETL certification for safety. The unit is designed for compact bathroom sink installations. It offers reliable point-of-use heating without extra features. The build is sturdy and wall-mountable. Choose this if you want a similar power output in a smaller width. It is a practical choice for tight spaces where standard electric heaters might not fit.
Camplux 11 kW Digital Tankless Water Heater
The Camplux heater uses 11 kW at 240V. It features a digital display for precise temperature control. The dimensions are 9.72 by 13.8 inches. This is narrower than the Thermomate. It includes ETL certification. The digital interface allows you to see the exact water temperature. This is helpful for precise point-of-use applications. Pick this alternative if you want clear feedback on heating performance. It offers better visibility of settings while maintaining a compact size suitable for tight installations.
Quick picks
Our 7 picks
Thermomate 11kW Electric Tankless Water Heater
Best for: single bathroom point-of-use
- Fuel Type
- Electric
- Flow Rate
- Up to 2.6GPM
- Wattage
- 11kW
- Voltage
- 208~240 Volt
- Temperature Control
- Within 1°F
- Certification
- ETL Certified
View on Amazon: Thermomate 11kW Electric Tankless Water Heater Affiliate link
The ThermoMate 11kW unit delivers instant hot water at 2.15 GPM with a 35°F rise. It uses self-modulating technology to maintain temperature within 1°F. The compact 11.8-inch width fits tight spaces. It requires a 60Amp breaker setup. This electric heater is ETL certified for safety. It suits point-of-use applications like bathrooms or small sinks.
Pros
- Precise temperature control within 1°F
- Compact 11.8-inch width saves space
- Self-modulating energy efficiency
- ETL certified safety
Cons
- Requires 60Amp breaker installation
- Limited to 2.15 GPM flow rate
- No Wi-Fi connectivity listed
Good fit if
- You need precise temperature stability
- You have space for a wall-mounted unit
- You want ETL certified safety
Skip if
- You need high flow for multiple showers
- You cannot install a 60Amp breaker
- You want smart home integration
Verdict: ThermoMate 11kW Electric Tankless Heater offers stable temperature control for single-point use. It fits buyers who prioritize compact size and precise heating over high flow rates.
Thermomate 11 kW Electric Tankless Water Heater
Best for: Compact point-of-use sink or bathroom installations
- Fuel Type
- Electric
- Flow Rate
- 2.15 GPM
- Wattage
- 11 kW
- Voltage
- 240 V
- Certification
- ETL
- Dimensions
- 10.6 x 7.09 x 7.09 inches
View on Amazon: Thermomate 11 kW Electric Tankless Water Heater Affiliate link
This ThermoMate unit delivers instant hot water at 2.15 GPM with a 35°F temperature rise. It operates on 240V power and features a compact 10.6-inch height. The cast aluminum heating chamber resists scale and corrosion. ETL certification ensures safety with overheating protection. It suits point-of-use applications like bathroom sinks or small kitchens where space is limited.
Pros
- 2.15 GPM flow rate at 35°F rise
- Cast aluminum heating chamber for durability
- ETL certified with overheating protection
- Compact 10.6-inch height saves space
- Self-modulating technology for energy efficiency
Cons
- Requires a 50Amp double-pole breaker
- Max temperature limited to 131°F
- No Wi-Fi connectivity for remote control
Good fit if
- You need hot water for a single sink or small bathroom
- You have 240V electrical capacity and a 50Amp breaker available
- You want a compact unit that mounts on the wall
Skip if
- You require high flow rates for multiple simultaneous fixtures
- You only have standard 120V outlets available
- You need smart home integration or app control
Verdict: ThermoMate 11kW Electric Tankless Water Heater is a solid choice for low-flow point-of-use installations where wall space is tight. It fits users who prioritize basic reliability and ETL safety certification over smart features.
WINTEMP 11 kW 2.6 GPM Tankless Water Heater
Best for: compact ETL-certified electric heating
- Fuel Type
- Electric
- Flow Rate
- Up to 2.6 GPM
- Wattage
- 11kW
- Voltage
- 240V
- Certification
- ETL
- Dimensions
- 14.1” x 9.7” x 3.3”
View on Amazon: WINTEMP 11 kW 2.6 GPM Tankless Water Heater Affiliate link
The WINTEMP WN11 is an 11kW electric tankless water heater rated for 240V. It delivers up to 2.6 GPM, making it suitable for residential showers in warmer climates. The unit measures 9.7 by 14.1 inches and mounts to the wall. It features self-regulating technology to adjust power based on flow. ETL certification ensures safety with leakage and overheat protection.
Pros
- ETL certified for safety
- Self-regulating energy technology
- Compact wall-mounted design
- Up to 2.6 GPM output
Cons
- Requires 50 Amp DP breaker
- Limited to 2.6 GPM max
- Hardwired installation only
Good fit if
- You need ETL certification
- You have a 50 Amp circuit
- You want compact wall mounting
Skip if
- You need WiFi control
- You require higher flow rates
- You prefer plug-in installation
Verdict: WINTEMP 11kW Electric 240V offers ETL safety and space-saving design for users with existing 50 Amp circuits. It fits homes needing reliable point-of-use heating without complex setup.
Westinghouse 11 kW Smart Wi-Fi Tankless Water Heater
Best for: Smart home users needing ETL-certified instant hot water
- Fuel Type
- Electric
- Flow Rate
- 2.6 GPM
- Wattage
- 11 kW
- Voltage
- 240V
- Temperature Control
- 86-140°F
- Certification
- ETL
View on Amazon: Westinghouse 11 kW Smart Wi-Fi Tankless Water Heater Affiliate link
The Westinghouse 11kW unit delivers 2.6 GPM at 240V with 98% thermal efficiency. It connects to WiFi for app and voice control via Alexa or Google Home. A temperature memory function restores your last setting after power outages. The ETL-certified device includes four safety layers and an IPX4 rating for bathroom use. Its compact gray design mounts to walls, making it suitable for apartments or single-family homes needing instant hot water.
Pros
- 2.6 GPM flow rate at 105°F outlet temperature
- WiFi connectivity with Alexa and Google Home support
- Temperature memory function retains settings after power loss
- ETL certified with IPX4 moisture resistance
Cons
- Requires a dedicated 60A double-pole breaker and 8 AWG wire
- Minimum start-up flow rate of 0.53 GPM may limit low-flow fixtures
- Removable inlet filter and rotor require manual cleaning every 6 months
Good fit if
- You want smart home integration for temperature control
- You need ETL certification for safety compliance
- You have the electrical capacity for a 60A circuit
Skip if
- You cannot install a dedicated 60A double-pole breaker
- You prefer a unit with no maintenance requirements
- You need a higher flow rate than 2.6 GPM
Verdict: Westinghouse 11kW Electric Tankless Water Heater with WiFi suits users who prioritize smart controls and verified safety certifications. It delivers reliable instant hot water for single-point applications like showers or sinks in modern homes.
Garvee 11 kW Square Metal Tankless Heater
Best for: tight spaces without remote control needs
- Fuel Type
- Electric
- Wattage
- 11 kW
- Voltage
- 240V
- Certification
- ETL
- Dimensions
- 2.99 x 14.2 x 14.2 inches
- Use
- Whole House
View on Amazon: Garvee 11 kW Square Metal Tankless Heater Affiliate link
The Garvee 11kW electric tankless water heater delivers instant hot water at 240 volts. It features a compact square design measuring 14.2 by 14.2 inches with a slim 2.99-inch depth. The unit uses self-modulating technology to adjust power based on flow. A digital LED display allows for precise temperature control. This ETL-listed model suits residential bathrooms and kitchens where space is limited.
Pros
- 11 kW power output for instant heating
- Compact 2.99-inch depth saves wall space
- Digital LED display for precise control
- Self-modulating technology adjusts to flow
- ETL certified for safety
Cons
- No Wi-Fi connectivity for remote monitoring
- Heavier build at 13.3 pounds
- Lacks smart home integration
Good fit if
- You need a compact unit for tight spaces
- You prefer digital temperature precision
- You want ETL certified safety
Skip if
- You require Wi-Fi remote control
- You need a lighter installation
- You want smart home features
Verdict: The Garvee 11kW 240V Electric Tankless Heater fits small spaces well due to its slim profile. It offers reliable heating for single fixtures without smart features.
WINTEMP 11kW 240V Electric Tankless Water Heater
Best for: compact bathroom sink installations
- Fuel Type
- Electric
- Flow Rate
- Up to 2.6 GPM
- Wattage
- 11 kW
- Voltage
- 240V
- Temperature Control
- 86°F–140°F
- Certification
- ETL
View on Amazon: WINTEMP 11kW 240V Electric Tankless Water Heater Affiliate link
The WINTEMP 11kW unit delivers up to 2.6 GPM of hot water at 240V. It features a compact 14 x 9.7 x 3.4 inch design that mounts easily on walls. Digital controls allow you to set temperatures between 86°F and 140°F. This heater provides instant heat for bathroom sinks and point-of-use applications. It includes ETL certification for safe operation and comes with a 2-year warranty.
Pros
- Delivers up to 2.6 GPM flow rate
- Compact dimensions of 14 x 9.7 x 3.4 inches
- Digital display with 86°F–140°F temperature range
- ETL certified for safety
Cons
- Requires a dedicated 50 Amp double-pole breaker
- Limited to point-of-use applications rather than whole-home supply
- 2-year warranty is shorter than some competitors
Good fit if
- You need a compact unit for a bathroom sink
- You require ETL certification for your installation
- You want precise digital temperature control
Skip if
- You need hot water for multiple fixtures simultaneously
- Your electrical panel cannot support a 50 Amp breaker
- You prefer a longer warranty period than 2 years
Verdict: WINTEMP 11kW Electric Tankless Water Heater fits buyers who need reliable point-of-use hot water with safety certifications. It is ideal for small spaces where wall mounting is necessary and electrical capacity allows for high-amperage requirements.
Camplux 11 kW Digital Tankless Water Heater
Best for: precise point-of-use temperature control
- Fuel Type
- Electric
- Wattage
- 11 kW
- Voltage
- 240 V
- Temperature Control
- 86 to 131°F, 1°F increments
- Certification
- ETL
- Dimensions
- 13.78 x 9.72 x 3.15 in
View on Amazon: Camplux 11 kW Digital Tankless Water Heater Affiliate link
The Camplux TEW11-CA is a 11kW, 240V electric tankless water heater designed for point-of-use installation. It features a digital display for precise temperature control in 1°F increments between 86°F and 131°F. The unit measures 13.78 x 9.72 x 3.15 inches and weighs 11 pounds. It includes ETL certification and overheating protection. This model suits users who need compact, instant hot water with clear temperature feedback.
Pros
- Digital display for 1°F temperature increments
- Compact dimensions of 3.15 inches depth
- ETL certified with overheating protection
- Left and right inlet/outlet options
Cons
- Requires a 50-amp double-pole breaker
- Heavy for a point-of-use unit at 11 pounds
- Limited to electric fuel type only
Good fit if
- You need precise temperature adjustments via a digital screen
- You have space for a 50-amp circuit
- You want a compact unit for tight installations
Skip if
- You only have a 40-amp electrical circuit available
- You require wifi connectivity for remote control
- You need a higher flow rate for whole-house use
Verdict: Camplux 11kW Electric with Digital Display offers precise control for point-of-use applications. It fits buyers who prioritize clear temperature feedback and compact sizing over whole-home capacity.
Specifications side by side
| Spec | Thermomate 11kW Electric Tankless Water Heater | Thermomate 11 kW Electric Tankless Water Heater | WINTEMP 11 kW 2.6 GPM Tankless Water Heater | Westinghouse 11 kW Smart Wi-Fi Tankless Water Heater | Garvee 11 kW Square Metal Tankless Heater | WINTEMP 11kW 240V Electric Tankless Water Heater | Camplux 11 kW Digital Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Electric | Electric | Electric | Electric | Electric | Electric | Electric |
| Flow Rate | Up to 2.6GPM | 2.15 GPM | Up to 2.6 GPM | 2.6 GPM | not stated | Up to 2.6 GPM | not stated |
| Wattage | 11kW | 11 kW | 11kW | 11 kW | 11 kW | 11 kW | 11 kW |
| Voltage | 208~240 Volt | 240 V | 240V | 240V | 240V | 240V | 240 V |
| Temperature Control | Within 1°F | not stated | not stated | 86-140°F | not stated | 86°F–140°F | 86 to 131°F, 1°F increments |
| Certification | ETL Certified | ETL | ETL | ETL | ETL | ETL | ETL |
| Dimensions | not stated | 10.6 x 7.09 x 7.09 inches | 14.1” x 9.7” x 3.3” | not stated | 2.99 x 14.2 x 14.2 inches | 14 x 9.7 x 3.4 inches | 13.78 x 9.72 x 3.15 in |
| Use | not stated | not stated | Under Sink | not stated | Whole House | not stated | not stated |
| Features | not stated | not stated | not stated | WiFi | not stated | not stated | Digital Display |
| Weight | not stated | 11 pounds | not stated | not stated | 13.3 pounds | 8.6 pounds | 11 pounds |
| Size | 240V/11kW | not stated | 11kW | S-11 | 11KW | WN-11 | 240V/11kW |
| Color | Gray | Gray | Gray | Gray | balck | Gray | White |
| Model | ET110 | ET Mini | WN11 | WET011A0G | PTH_33HAA3LA9Ks-h | YQ-WN11K | TEW11-CA |
You can evaluate higher output options across our spec comparison of the best electric tankless water heaters.
Frequently asked questions
Can I use a 11 kW tankless heater for a whole house?
No. These units are designed for point-of-use applications like a single bathroom or kitchen sink. The data indicates they provide stable control for one fixture at a time. They do not have the flow rate or capacity to serve multiple showers simultaneously in a large home.
Do these models require a dedicated circuit?
Yes. All listed heaters operate at 240V and 11 kW. This power draw typically requires a dedicated 50 Amp circuit. You must ensure your electrical panel has the capacity and space for a new double-pole breaker before installation to meet safety standards and prevent tripping.
Which option is best for a tight bathroom corner?
The Thermomate ET110HCUS is the most compact choice. It measures just 7.09 by 10.6 inches and weighs 11 pounds. Its small footprint makes it ideal for installations where wall space is limited. It fits buyers who need basic reliability without taking up much room.
Is there a model with Wi-Fi connectivity?
Yes. The Westinghouse WET011A0G includes built-in Wi-Fi. This feature allows you to control the heater via a smartphone app. It suits users who want smart home integration and verified safety certifications for instant hot water in modern residences.
Which heater has a digital display?
The Camplux TEW11-CA features a digital display. This provides clear temperature feedback for precise control. It is designed for buyers who prioritize seeing exact water temperatures. The unit is white and measures 9.72 by 13.8 inches, fitting well in compact spaces.
Are these heaters ETL certified?
Yes. The data confirms that the WINTEMP and Westinghouse models carry ETL safety certifications. This verification ensures they meet North American safety standards. You can trust these units for reliable point-of-use heating without complex setup or safety concerns.
What is the color of the Garvee heater?
The Garvee PTH_33HAA3LA9Ks-h is black. It has a slim profile measuring 14.2 by 2.99 inches. This square metal design fits small spaces well. It offers reliable heating for single fixtures without requiring remote controls or smart features.