Looking Beyond the Tesoroli Electric Tankless Water Heater? 6 Alternatives Worth a Look

How each alternative compares

Thermomate 11 kW Electric Tankless Water Heater

The Thermomate 11 kW model offers a smaller footprint at 7.09 by 10.6 inches, making it easier to fit in very tight under-sink spaces compared to the Tesoroli’s 9 by 14 inch frame. It shares the same 240V 11 kW electrical requirements. The cast aluminum housing provides a different material feel than the Tesoroli’s ABS plastic. You get a slightly lighter unit at 11 pounds. Choose this if your installation area has strict height or width limits. It lacks the LED display and knob control found on the Tesoroli, relying instead on basic mechanical adjustments. It is a solid choice for pure point-of-use heating where space is the primary constraint.

WINTEMP 11 kW 2.6 GPM Tankless Water Heater

The WINTEMP 11 kW unit is designed for single-shower or point-of-use applications with a focus on certified safety. It measures 9.7 by 14.1 inches, which is slightly wider than the Tesoroli. Like the Tesoroli, it runs on 240V 11 kW power. The key difference is its ETL certification, which may matter for your local building codes. It does not support whole-house demand. If you need a budget-friendly option for a single sink or shower, this is a practical pick. It gives up the sleek white design for a gray industrial look. It is ideal if you prioritize certified safety standards over aesthetic integration into a modern kitchen.

Westinghouse 11 kW Smart Wi-Fi Tankless Water Heater

The Westinghouse 11 kW heater stands out with built-in Wi-Fi capability, allowing you to control it via a smartphone app. This is a significant upgrade over the Tesoroli’s manual knob control. It shares the same 240V 11 kW power draw and similar dimensions at 9.56 by 12.6 inches. The smart features let you adjust settings remotely, which is useful for energy management. You trade the physical LED display for digital connectivity. This model is best for users who want to integrate their water heater into a smart home system. It offers the same safety features but adds the convenience of remote monitoring and control for a more modern experience.

Garvee 11 kW Square Metal Tankless Heater

The Garvee 11 kW heater features a unique square metal design that is only 2.99 inches high but 14.2 inches wide. This low-profile shape is ideal for installations where height is restricted but width is available. It shares the 240V 11 kW specification. Unlike the Tesoroli, it does not include smart features or a digital display. It is a straightforward, no-frills unit for compact spaces. The metal construction offers a different durability profile than the Tesoroli’s plastic body. Choose this if you need a heater that fits under low cabinets or in shallow closets. It provides reliable instant hot water without the complexity of electronic controls or connectivity options.

WINTEMP 11kW 240V Electric Tankless Water Heater

The second WINTEMP 11 kW model is another compact option at 9.7 by 14 inches, very close to the Tesoroli’s size. It also runs on 240V 11 kW power. This unit is lighter at 8.6 pounds, making installation slightly easier. It focuses on certified safety and reliable point-of-use performance for bathrooms or kitchens. It lacks the LED display and smart features of the Tesoroli. The gray color and industrial design differ from the Tesoroli’s white aesthetic. It is a good alternative if you need a certified, no-nonsense heater for a single fixture. It gives up the modern interface for a simpler, potentially more durable mechanical operation.

Camplux 11 kW Digital Tankless Water Heater

The Camplux 11 kW heater is distinguished by its digital display, which offers precise temperature control. It is slightly narrower at 9.72 inches but similar in height at 13.8 inches. It shares the 240V 11 kW power requirement. The digital interface allows for more accurate temperature adjustments than the Tesoroli’s knob. It is designed for users who need exact heat settings for sensitive applications. The compact depth of 3.15 inches helps it fit in tight spaces. Choose this if precise temperature control is your priority. It offers a modern digital experience while maintaining the same core heating capacity and safety standards as the Tesoroli.

Quick picks

Our 7 picks

1 Best overall

Tesoroli 11 kW Electric Tankless Water Heater

Best for: compact under-sink hot water needs

Fuel Type

Electric

Wattage

11 kW

Installation Location

Indoor

Voltage

240V

Certification

CSA

Dimensions

14 x 9 x 9 inches

View on Amazon: Tesoroli 11 kW Electric Tankless Water Heater Affiliate link

The Tesoroli RE13K is an 11kW, 240V electric tankless water heater designed for point-of-use applications. It measures 9 x 14 x 9 inches, making it compact for tight spaces. The unit features an LED display and knob controls. It raises water temperature by up to 131°F in three seconds. With 99% thermal efficiency, it suits kitchens and small bathrooms where space is limited.

Pros

• 11kW power output for rapid heating
• Compact 9 x 14 x 9 inch footprint
• LED display with knob controls
• 99% thermal efficiency rating
• IPX4 water resistance rating

Cons

• Limited to point-of-use or single fixtures
• No Wi-Fi or smart home connectivity
• Flow rate varies significantly with inlet temperature

Good fit if

• You need a compact unit for under-sink installation
• You require precise temperature control via a knob
• You want a CSA-listed unit for safety compliance

Skip if

• You need whole-house hot water supply
• You want remote control via a mobile app
• You have limited 240V electrical capacity

Verdict: Tesoroli 11kW 240V Electric Tankless Heater fits users needing a compact, efficient solution for single fixtures. It delivers reliable heat for sinks and small bathrooms without taking up much space.

2 Also great

Thermomate 11 kW Electric Tankless Water Heater

Best for: tight spaces and point-of-use sinks

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 11kW of power at 240V, providing up to 2.15 GPM at a 35°F temperature rise. It features a cast aluminum heating chamber designed to resist scale and corrosion. The compact 10.6-inch height fits tight spaces. It requires a 50A double-pole breaker and 6AWG wiring. This model is ideal for point-of-use applications like bathrooms or small sinks where space is limited.

Pros

• 11kW heating element supports up to 3 faucets
• Cast aluminum chamber prevents scale and corrosion
• Compact 10.6" height fits tight spaces
• ETL certified for safety and overheating protection

Cons

• Lower flow rate of 2.15 GPM compared to competitors
• Requires a heavy-duty 50A double-pole breaker
• No digital display or remote control mentioned

Good fit if

• You need a compact unit for a small sink
• You want ETL certification for safety
• You are installing a point-of-use heater

Skip if

• You need a flow rate above 2.5 GPM
• You cannot install a 50A breaker
• You want digital temperature controls

Verdict: ThermoMate 11kW Electric Tankless Water Heater offers a durable cast aluminum design for tight spaces. It suits users needing reliable point-of-use heat who can handle a 50A electrical setup.

3 Also great

WINTEMP 11 kW 2.6 GPM Tankless Water Heater

Best for: Point-of-use and single shower applications

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 of hot water, making it suitable for showers in warmer climates or point-of-use sinks in colder regions. The unit measures 9.7 by 14.1 inches and requires 50 Amp DP breakers. It features ETL certification and self-regulating technology to adjust power based on flow and temperature.

Pros

• ETL certified for safety
• Self-regulating energy technology
• Compact wall-mounted design
• Multiple safety protections

Cons

• Lower flow rate of 2.6 GPM
• Requires hardwired installation
• Limited to point-of-use or single shower

Good fit if

• You need a compact unit for tight spaces
• You want ETL certified safety standards
• You are installing a point-of-use heater

Skip if

• You require a higher flow rate than 2.6 GPM
• You cannot install 50 Amp DP breakers
• You prefer plug-in convenience over hardwiring

Verdict: WINTEMP 11kW Electric Tankless Water Heater fits single-shower or point-of-use needs where space is tight and ETL certification matters. It does not support whole-house demand or high-flow applications.

4 Best premium

Westinghouse 11 kW Smart Wi-Fi Tankless Water Heater

Best for: smart home integration and single-point use

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

This Westinghouse unit delivers 11 kW of power at 240V, reaching a flow rate of 2.6 GPM. It features WiFi connectivity for app and voice control, plus temperature memory after outages. The compact design measures 12.6 by 9.56 by 9.56 inches. ETL certification ensures safety with multiple protection layers. It suits users wanting smart features and instant hot water for single-point residential use.

Pros

• WiFi connectivity for remote control
• Voice control via Alexa and Google Home
• Temperature memory function
• ETL certified with 4-layer protection
• Removable inlet filter for easy maintenance

Cons

• Requires a dedicated 60A double-pole breaker
• Uses 8 AWG wire for installation
• Limited to single water point flow

Good fit if

• You want app-based temperature control
• You have the electrical capacity for a 60A circuit
• You need a compact unit for small spaces

Skip if

• You cannot install a 60A dedicated breaker
• You need hot water for multiple simultaneous fixtures
• You prefer a unit without smart features

Verdict: Westinghouse 11kW WiFi Electric Tankless Heater offers smart control and solid safety features for users with the necessary electrical infrastructure. It is best for those upgrading to a connected home system.

5 Best budget

Garvee 11 kW Square Metal Tankless Heater

Best for: compact installations without smart 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

This Garvee unit delivers 11 kW of power at 240 V for instant hot water. Its square iron enclosure measures 14.2 by 14.2 inches with a slim 2.99-inch depth. The digital display allows precise temperature control. Self-modulating technology adjusts energy use based on flow. It carries ETL certification for safety. This model suits small spaces where a compact footprint matters.

Pros

• 11 kW high-efficiency instant heating
• Compact 2.99-inch depth saves space
• Digital LED display for precise control
• ETL listed for safety

Cons

• No Wi-Fi connectivity for remote monitoring
• Fixed 240 V electrical requirement
• No remote control included

Good fit if

• You need a compact unit for tight spaces
• You want precise digital temperature control
• You prefer a sturdy metal enclosure

Skip if

• You require smart home integration
• You need a higher flow rate than 11 kW provides
• You want a remote control for operation

Verdict: Garvee 11kW Electric Tankless Water Heater fits homes with limited installation space that need reliable, instant hot water without smart features.

6 Also great

WINTEMP 11kW 240V Electric Tankless Water Heater

Best for: point-of-use bathroom or kitchen sinks

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 digital display adjustable from 86°F to 140°F and self-modulating technology for stable temperature control. This ETL-certified heater is compact, measuring 14 x 9.7 x 3.4 inches, making it suitable for point-of-use installations in bathrooms or kitchens where space is limited.

Pros

• Provides up to 2.6 GPM flow rate
• Digital temperature control from 86°F to 140°F
• ETL certified for safety
• Compact wall-mounted design

Cons

• Requires 50 Amp DP breaker and 8 AWG wiring
• Limited to point-of-use applications
• No Wi-Fi connectivity

Good fit if

• You need a compact heater for a single sink
• You have existing 240V electrical infrastructure
• You want ETL certification for safety

Skip if

• You require whole-house hot water supply
• You need remote app control
• You cannot install a 50 Amp breaker

Verdict: WINTEMP 11kW Electric Tankless Water Heater is a solid point-of-use option for users with the necessary electrical setup who prioritize compact size and certified safety over smart features.

7 Best digital display

Camplux 11 kW Digital Tankless Water Heater

Best for: Precise temperature control in tight spaces

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 an 11kW, 240V electric tankless water heater with a compact 13.78 x 9.72 x 3.15-inch footprint. It features a digital display for precise temperature control in 1°F increments from 86°F to 131°F. The unit draws 45.8 amps and requires a 50-amp breaker. It is ETL certified and includes overheating protection. This model suits users needing precise heat settings in tight spaces.

Pros

• Digital display with 1°F increment adjustments
• Compact 3.15-inch depth saves space
• ETL certified for safety
• Separation of heating element from plumbing

Cons

• Requires a 50-amp double-pole breaker
• High amperage draw of 45.8 amps
• Limited to 11kW power output

Good fit if

• You need precise temperature control in 1°F increments
• You have limited space under a counter
• You want ETL certification for safety

Skip if

• You only have a 40-amp electrical circuit
• You need Wi-Fi connectivity for remote control
• You require a higher flow rate than 2.6 GPM

Verdict: Camplux TEW11-CA 11kW Electric fits users who prioritize precise temperature control and a compact footprint. It delivers reliable performance for point-of-use applications where space is tight and exact heat settings matter.

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Frequently asked questions

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