Eemax HA036240 240V 36 kW Electric Tankless Water Heater Alternatives: 6 Similar Picks Compared

How these 36 kW units compare

Stiebel Eltron Tempra 36 Trend Tankless Water Heater

The Stiebel Eltron Tempra 36 Trend offers a narrower profile at 16.6 inches wide, compared to the Eemax’s 21-inch width. It weighs slightly more at 19 pounds. This model targets homes with 300 A electrical service. Its copper heating core and strong warranty make it durable for high-demand use. You should choose it if you need a premium build and have robust electrical infrastructure. The Eemax is better for tight spaces where width is the primary constraint. Both deliver 36 kW at 240 volts, but the Stiebel Eltron prioritizes longevity and silent operation over minimal footprint.

WINTEMP 36kW Electric Tankless Water Heater

The WINTEMP WN36 adds WiFi control, which the Eemax lacks. It is lighter at 36.1 pounds but wider at 13.7 inches. This unit requires four dedicated circuits for operation. You should pick it if you want remote monitoring and ETL certification. The Eemax is simpler, with no smart features, making it suitable for users who prefer basic, reliable heating. Both are 36 kW electric heaters. The WINTEMP’s digital interface allows for energy tracking. The Eemax remains a straightforward choice for homes with strong electrical systems that do not require app-based management or connectivity options.

WINTEMP 36 kW WiFi Tankless Water Heater

The WINTEMP WM36V also includes WiFi features for smart home integration. It weighs 38 pounds, making it heavier than the Eemax. The unit is 13.7 inches wide. It suits homes with high electrical capacity that value remote monitoring. You should choose this model if you want steady hot water for multiple points with energy tracking capabilities. The Eemax provides basic heating without connectivity. Both offer 36 kW power. The WINTEMP model is ideal for users who want to track energy usage. The Eemax is better for those who prioritize a compact, no-frills installation over digital control and smart home compatibility.

VEVOR 36kW Touchscreen Electric Tankless Water Heater

The VEVOR JN36 features a touchscreen interface for digital control. It weighs 34 pounds and is 13.7 inches wide. This model offers scale-resistant heating, which may extend maintenance intervals. It requires a 40A circuit. You should pick it if you want a digital display and do not need smart home integration. The Eemax has a simpler design without a touchscreen. Both are 36 kW electric units. The VEVOR provides a modern interface for temperature adjustments. The Eemax is preferable for users who prefer mechanical simplicity. The VEVOR’s scale resistance is a practical benefit for areas with hard water, offering durability without connectivity features.

Rheem 36 kW Electric Tankless Water Heater

The Rheem RTEX-36 supports external temperature controls for manual adjustment. It weighs 24.4 pounds, which is heavier than the Eemax. The model is silver and lacks smart features. You should choose it if you value precise manual control over digital interfaces. The Eemax is more compact at 4.5 inches high. Both deliver 36 kW at 240 volts. The Rheem is suitable for homes with 240V wiring that prioritize adjustment accuracy. The Eemax remains the better option for tight vertical spaces. The Rheem’s external controls offer a tactile experience. The Eemax provides a straightforward, space-saving solution for standard electrical setups without the need for complex manual tuning.

MRNIU 36 kW Electric Tankless Water Heater

The MRNIU Mrniu36 is designed for whole-house hot water. It weighs 18.3 pounds and is 17.1 inches wide. It focuses on compact size and basic safety features. You should pick it if you want reliable whole-house performance without smart connectivity. The Eemax is slightly wider at 21 inches. Both are 36 kW electric heaters. The MRNIU model is ideal for buyers who prioritize compact dimensions and essential safety. The Eemax offers a stainless steel build. The MRNIU provides a white finish. Both units serve similar heating needs. The MRNIU is better for those who want a smaller footprint. The Eemax remains a solid choice for standard installations where width is not a limiting factor.

Quick picks

Our 7 picks

1 Best overall

Eemax 36 kW Stainless Steel Tankless Water Heater

Best for: compact installations with 240 V power

Fuel Type

Electric

Wattage

36 kW

Voltage

240 V

Dimensions

4.5 x 21 x 18 inches

Weight

17.4 pounds

View on Amazon: Eemax 36 kW Stainless Steel Tankless Water Heater Affiliate link

This Eemax unit delivers 36 kW of heating power at 240 volts. It measures 4.5 by 21 by 18 inches and weighs 17.4 pounds. The stainless steel housing fits tight spaces. You get endless hot water for point-of-use or whole-home setups. It suits homes with adequate electrical capacity. The compact size helps in closets or utility rooms.

Pros

• 36 kW heating output
• 240 V electric operation
• Stainless steel construction
• Compact 4.5 inch depth

Cons

• Requires 240 V electrical circuit
• No visible temperature display
• Manual temperature adjustment only

Good fit if

• You have a dedicated 240 V circuit
• You need a compact unit for tight spaces
• You want stainless steel durability

Skip if

• You only have 120 V outlets
• You need digital temperature readouts
• You want smart home connectivity

Verdict: Eemax 36 kW Electric Tankless Water Heater fits homes with strong electrical infrastructure. It delivers reliable heat in a small footprint. You should choose it if space and power are available.

2 Best premium

Stiebel Eltron Tempra 36 Trend Tankless Water Heater

Best for: homes with 300 A electrical service

Fuel Type

Electric

Wattage

36 kW

Voltage

240 V

Temperature Control

68° to 140°F

Dimensions

14.5 x 16.6 x 4.63 in

Use

Whole House

View on Amazon: Stiebel Eltron Tempra 36 Trend Tankless Water Heater Affiliate link

The Stiebel Eltron Tempra 36 Trend delivers 36 kW of electric heating at 240 V. It measures 14.5 by 16.6 by 4.63 inches and weighs 19 pounds. The unit offers a temperature range of 68 to 140 degrees Fahrenheit. It features a solid copper heating system and silent operation. You get 7-year leakage and 3-year parts warranties. This model requires a minimum 300 A electric service.

Pros

• 36 kW output for high-demand usage
• Compact 4.63-inch depth saves wall space
• 7-year leakage and 3-year parts warranties
• Silent electronic operation with no noise
• Solid copper heating system for durability

Cons

• Requires a minimum 300 A electric service
• No WiFi or remote connectivity listed
• Limited to 240 V voltage input

Good fit if

• You have a 300 A electrical panel
• You want a compact wall-mounted unit
• You prefer solid copper heating elements

Skip if

• You only have a 200 A service
• You need WiFi remote control
• You require 208 V compatibility

Verdict: Stiebel Eltron Tempra 36 Trend suits homes with robust 300 A electrical services needing reliable, silent hot water. Its copper heating core and strong warranty coverage make it a durable option for high-demand households.

3 Also great

WINTEMP 36kW Electric Tankless Water Heater

Best for: WiFi-enabled electric tankless heating

Fuel Type

Electric

Flow Rate

8.7 GPM

Wattage

36 kW

Voltage

240 V

Certification

ETL

Dimensions

21.5" H × 13.7" W × 5.2" D

View on Amazon: WINTEMP 36kW Electric Tankless Water Heater Affiliate link

The WINTEMP WN36 is a 36 kW electric tankless water heater designed for homes with three to five bathrooms. It delivers up to 8.7 GPM at 240V. Built-in WiFi allows you to control temperature from your smartphone. The unit measures 13.7 inches wide and weighs 36.1 pounds. It includes ETL certification and multiple safety protections for reliable operation.

Pros

• 36 kW power output for high flow rates
• Built-in WiFi for remote temperature control
• ETL certified for safety standards
• Compact wall-mounted design saves space

Cons

• Requires four 40A double-pole circuit breakers
• 2-year replacement warranty is shorter than competitors
• Heavy at 36.1 pounds for wall mounting

Good fit if

• You need smartphone control for temperature adjustments
• You have a 300A electrical service available
• You want ETL certification for safety

Skip if

• You cannot install four separate 40A breakers
• You prefer a longer warranty than two years
• You have limited wall space for a 21.5-inch unit

Verdict: WINTEMP WN36 36kW Electric Tankless Water Heater fits users who want WiFi control and ETL certification. It suits homes with robust electrical infrastructure ready for four dedicated circuits.

4 Also great

WINTEMP 36 kW WiFi Tankless Water Heater

Best for: homes with high electrical capacity and smart home needs

Fuel Type

Electric

Flow Rate

8.7 GPM

Wattage

36 kW

Voltage

240V

Temperature Control

86°F to 140°F

Certification

ETL

View on Amazon: WINTEMP 36 kW WiFi Tankless Water Heater Affiliate link

The WINTEMP WM36V is a 36 kW electric tankless water heater with an 8.7 GPM flow rate. It uses 240V power and requires four 40-amp breakers. The unit includes WiFi app control for remote temperature adjustments between 86°F and 140°F. It features ETL certification and a compact wall-mounted design. This model suits homes needing smart monitoring and steady hot water delivery for multiple fixtures.

Pros

• 36 kW output delivers up to 8.7 GPM
• WiFi app control for remote temperature and usage monitoring
• ETL certified for safety and reliability
• Self-modulating technology adjusts power to flow rate

Cons

• Requires four 40-amp double-pole breakers
• Needs four sets of 8 AWG wiring
• 2-year warranty is shorter than industry standard

Good fit if

• You have the electrical capacity for four 40-amp breakers
• You want to monitor water usage via an app
• You need ETL certification for your installation

Skip if

• You cannot install four separate 40-amp circuits
• You prefer a unit with a longer warranty period
• You need a simpler single-breaker electrical setup

Verdict: WINTEMP 36kW WiFi Electric Heater fits homes with robust electrical infrastructure that value remote monitoring capabilities. It provides steady hot water for multiple points of use while offering smart home integration for energy tracking.

5 Also great

VEVOR 36kW Touchscreen Electric Tankless Water Heater

Best for: Users wanting digital control and scale resistance

Fuel Type

Electric

Wattage

36KW

Voltage

240V

Temperature Control

30-60°C / 86-140°F

Dimensions

13.7 x 13.7 x 5.31 inches

Weight

34 pounds

View on Amazon: VEVOR 36kW Touchscreen Electric Tankless Water Heater Affiliate link

The VEVOR 36kW unit delivers instant hot water at 240V with a digital LCD touch screen. Its die-cast aluminum heating element separates water and electricity to reduce scale buildup. The display allows real-time temperature monitoring and includes a security lock for safe operation. This model fits homes needing reliable, on-demand heating with clear interface controls.

Pros

• 36kW power output for high flow rates
• Digital LCD touch screen for real-time monitoring
• Die-cast aluminum heating element reduces scale
• Security lock prevents accidental changes

Cons

• No built-in WiFi connectivity
• Requires 40A circuit breakers and 8AWG wire
• No remote control included

Good fit if

• You want a digital display for easy temperature adjustment
• You need a 36kW unit for whole-house or commercial use
• You prefer a security lock for safety

Skip if

• You require WiFi connectivity for remote control
• You cannot install a 40A circuit with 8AWG wire
• You need a unit with a smaller footprint

Verdict: VEVOR 36kW Electric Tankless Water Heater is a solid choice for users who value a digital interface and scale-resistant heating. It suits those with the electrical capacity for a 40A circuit and who do not need smart home integration.

6

Rheem 36 kW Electric Tankless Water Heater

Best for: homes needing 36kW electric heat

Fuel Type

Electric

Wattage

36kW

Voltage

240V

Temperature Control

Ext Adj Temp Ctrl

Dimensions

Bot 3/4 in. Npt Con

Weight

24.4 pounds

View on Amazon: Rheem 36 kW Electric Tankless Water Heater Affiliate link

The Rheem RTEX-36 delivers 36 kW of heating power at 240V. It uses electric fuel and features external adjustable temperature control. This silver unit weighs 24.4 pounds. It suits households needing reliable on-demand hot water. The external controls allow you to fine-tune output. It fits well in spaces where precise temperature management matters.

Pros

• 36 kW heating capacity
• 240V electric operation
• External adjustable temperature control
• Compact 24.4 pound weight

Cons

• No built-in digital display mentioned
• No WiFi connectivity listed
• Requires 240V electrical circuit

Good fit if

• You need 36 kW of power
• You prefer external temperature adjustments
• You have a 240V outlet available

Skip if

• You require WiFi remote control
• You only have 120V circuits
• You want a built-in screen

Verdict: Rheem RTEX-36 36kW Electric Heater offers solid 36 kW performance with external temp controls. It fits homes with 240V wiring that value manual adjustment over smart features.

7 Best budget

MRNIU 36 kW Electric Tankless Water Heater

Best for: Whole-house hot water with compact design

Fuel Type

Electric

Wattage

36,000 W

Voltage

240 V

Dimensions

18 x 17.1 x 17.1 inches

Use

Whole House

Weight

18.3 pounds

View on Amazon: MRNIU 36 kW Electric Tankless Water Heater Affiliate link

The MRNIU 36kW unit delivers 240V power for whole-house hot water. Its compact white design measures 18 x 17.1 x 17.1 inches and weighs 18.3 pounds. You get instant heating without a storage tank. The LED display shows current temperature. It includes overheat protection and automatic shut-off for safety. This model suits homes needing reliable, on-demand hot water for multiple fixtures.

Pros

• 36,000W electric heating capacity
• Compact wall-mount design
• LED temperature display
• Overheat protection and auto shut-off

Cons

• No WiFi or smart connectivity
• No remote control included
• Basic LED display only

Good fit if

• You need whole-house hot water
• You want a compact wall-mount unit
• You prefer simple LED controls

Skip if

• You require smart home integration
• You need remote temperature adjustment
• You want a digital color display

Verdict: MRNIU 36kW Electric Tankless Water Heater provides solid 36kW performance for whole-house use. It fits buyers who prioritize compact size and basic safety features over smart connectivity.

Specifications side by side

Frequently asked questions