6 Best Alternatives to the Eemax 24 kW Electric Tankless Water Heater (2026)
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
The eemax 24 kw electric tankless water heater is a straightforward whole-house solution for homes with 240V circuits. It delivers reliable heating without complex smart features. You might need alternatives if your electrical panel has different capacity. You may also prefer a different size, color, or specific control interface. The products listed here share the same 24 kW power rating and 240V requirement. This ensures they can handle similar hot water demands as the original unit. Each option offers distinct physical dimensions or added features like digital displays or WiFi connectivity. You can choose based on your exact installation space and desired controls. This guide compares these models strictly by their published specifications. We focus on how each spec affects your daily hot water usage. The selection process prioritizes technical compatibility and practical performance data. You will find options for whole-house use or point-of-use applications. All listed units maintain the core electric heating requirement. This allows you to swap units without rewiring your main electrical service. We have organized the results to help you find the best fit for your home's infrastructure.
How each alternative compares
Rheem 24 kW Electric Tankless Water Heater
The Rheem RTEX-24 matches the Eemax 24 kW heating power but adds a compact profile. It measures 14.5 inches wide and 3.5 inches high, saving space in utility rooms. You get precise digital temperature control, which the Eemax lacks. This unit requires a 200-amp electrical service, a higher demand than the Eemax. Choose Rheem if you have the electrical capacity and want a smaller footprint with better temperature accuracy. It is ideal for whole-house use where space and precision matter.
Stiebel Eltron Tempra 24 Trend Water Heater
The Stiebel Eltron Tempra 24 Trend offers the same 24 kW output but uses solid copper construction for durability. It is slightly wider at 16.6 inches but thinner at 4.63 inches. This model suits homes with 150 A electrical panels. You trade smart features for long-term reliability and a robust warranty. Pick this if you prioritize build quality and copper components over digital displays. It is a solid choice for users who want a durable whole-house heater without complex electronics.
Westinghouse 24kW WiFi Tankless Water Heater
The Westinghouse WET-24K-G includes WiFi connectivity, allowing app management for temperature and scheduling. It matches the 24 kW output but is designed for homes with 100 A electrical capacity. The unit is 13 inches wide and 17.1 inches high. You gain smart home integration that the Eemax does not offer. Choose this if you want remote control and a wall-saving design. It is best for tech-savvy users who need app management and have moderate electrical infrastructure.
SIVUATEK 24 kW Point-of-Use Tankless Water Heater
The SIVUATEK V7B-240B is a point-of-use heater, not a whole-house unit like the Eemax. It delivers 24 kW in a compact 12.2-inch square form. It is heavier at 20 pounds. You get immediate hot water for a single sink or shower. Pick this if you need localized heating rather than whole-house supply. It suits users with 240V infrastructure who prioritize compact size and safety certifications. It is not a direct replacement for whole-house needs.
Camplux 24 kW Electric Tankless Water Heater
The Camplux TEW24-CA features a clear digital display for visible temperature feedback. It matches the 24 kW output and 240V requirement. The unit is 13.1 inches wide and 3.12 inches high, making it very slim. You get simple operation with precise temperature monitoring. Choose this if you want a digital readout without smart home complexity. It is ideal for buyers who prioritize visible data and straightforward control over app connectivity or copper construction.
Westinghouse 24kW 240V Wi-Fi Tankless Water Heater
The Westinghouse ET024CA0G offers WiFi connectivity for smart home integration. It provides 24 kW heating power. The unit is 14.2 inches square and 3.94 inches high. It requires adequate electrical capacity for whole-house use. You gain precise temperature control and remote management. Pick this if you want smart features and a compact package. It is suitable for users who need app control and have the necessary electrical infrastructure for a whole-house solution.
Quick picks
Our 7 picks
Eemax 24 kW Electric Tankless Water Heater
Best for: whole-house electric hot water
- Wattage
- 24 kW
- Voltage
- 240 V
- Fuel Type
- Electric
View on Amazon: Eemax 24 kW Electric Tankless Water Heater Affiliate link
The Eemax HA024240 is a 24 kW electric tankless water heater designed for whole-house use. It operates on a standard 240V circuit, delivering consistent hot water on demand. This unit suits homes with adequate electrical capacity. It provides reliable performance for daily tasks like showering and dishwashing. The compact design fits in utility spaces. You get steady water flow without the storage limitations of traditional tanks.
Pros
- 24 kW heating capacity for whole-house use
- Standard 240V electrical connection
- Electric fuel type for easy installation
Cons
- Requires dedicated 240V circuit
- No smart connectivity features listed
- Basic digital interface only
Good fit if
- You have a 240V electrical panel
- You need whole-house hot water
- You prefer electric heating systems
Skip if
- You only have 120V outlets
- You need smart home integration
- You require gas fuel type
Verdict: Eemax HA024240 24kW Electric Tankless Heater delivers reliable whole-house hot water for homes with 240V circuits. It fits buyers who want straightforward electric heating without smart features.
Rheem 24 kW Electric Tankless Water Heater
Best for: homes with 200-amp electrical service
- Flow Rate
- 5.9 GPM
- Wattage
- 24 kW
- Voltage
- 240 V
- Temperature Control
- 80°F - 140°F, 1-degree increments
- Dimensions
- 14.5 in W x 18.3 in L x 3.5 in H
- Fuel Type
- Electric
View on Amazon: Rheem 24 kW Electric Tankless Water Heater Affiliate link
The Rheem RTEX-24 delivers 5.9 GPM at 24 kW, making it a strong whole-house option. Its digital controls allow precise 1-degree adjustments from 80°F to 140°F. The compact design saves significant floor space compared to traditional tanks. It requires 240V power and three 40-amp breakers. This unit suits homes needing reliable, on-demand hot water without venting requirements.
Pros
- Provides up to 5.9 GPM flow rate
- Digital thermostatic controls in 1-degree increments
- Compact size is 90% smaller than tank heaters
- No venting required for installation
Cons
- Requires three 40-amp double-pole breakers
- Needs a minimum 200-amp household service panel
- No Wi-Fi or remote connectivity features
Good fit if
- You need precise temperature adjustments
- You want a compact, space-saving unit
- You have the electrical capacity for 240V
Skip if
- You require smart home integration
- Your electrical panel is below 200 amps
- You cannot install three 40-amp breakers
Verdict: Rheem RTEX-24 24kW Electric Tankless Water Heater is a solid choice for homes with adequate electrical infrastructure that prioritize precise temperature control and compact sizing.
Stiebel Eltron Tempra 24 Trend Water Heater
Best for: Homes with 150 A electrical panels
- Fuel Type
- Electric
- Wattage
- 24 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 24 Trend Water Heater Affiliate link
The Stiebel Eltron Tempra 24 Trend delivers 24 kW of power at 240 volts for whole-house hot water. It measures 14.5 by 16.6 by 4.63 inches and weighs 16.1 pounds. The unit heats water from 68 to 140 degrees Fahrenheit. It uses solid copper heating elements and auto-modulation to save energy. This model requires a 150 A minimum electric service. It offers a 7-year leakage and 3-year parts warranty.
Pros
- 24 kW output provides continuous hot water
- Solid copper heating system ensures durability
- Auto-modulation saves energy by adjusting power
- 7-year leakage warranty included
Cons
- Requires a high 150 A electrical service
- No Wi-Fi or smart home connectivity
- Digital display only, no remote control
Good fit if
- You have a 150 A electrical panel
- You want a reliable copper heating element
- You prefer a simple digital interface
Skip if
- You only have a 100 A electrical panel
- You need Wi-Fi remote control
- You want a smaller 12 kW unit
Verdict: Stiebel Eltron Tempra 24 Trend 24kW is a durable choice for homes with robust electrical infrastructure. It suits buyers who prioritize solid copper construction and long-term warranty coverage over smart features.
Westinghouse 24kW WiFi Tankless Water Heater
Best for: Smart home users with 100A electrical capacity
- Fuel Type
- Electric
- Flow Rate
- Max 5.55 GPM
- Wattage
- 24 kW
- Voltage
- 240V
- Certification
- ETL
- Dimensions
- 17" x 13" x 4.3"
View on Amazon: Westinghouse 24kW WiFi Tankless Water Heater Affiliate link
This Westinghouse unit delivers 24 kW of power at 240V, providing up to 5.55 GPM of hot water. It features built-in WiFi for app and voice control. The compact 17 x 13 x 4.3-inch design mounts flush to the wall. It requires a 100A breaker and 8 AWG wire. You get instant hot water for whole-house use, including showers and sinks, without waiting.
Pros
- 24 kW output for whole-house hot water
- WiFi app and voice control support
- Compact 17 x 13 x 4.3-inch footprint
- High flow rate of 5.55 GPM
Cons
- Requires a 100A electrical breaker
- Needs 8 AWG wiring for installation
- Starts at 0.79 GPM minimum flow
Good fit if
- You want smart home integration for temperature control
- You have the electrical capacity for a 100A breaker
- You need a compact unit that mounts flush to the wall
Skip if
- You cannot install a 100A double-pole breaker
- You do not have 8 AWG wiring available
- You prefer a unit with a physical display panel
Verdict: Westinghouse 24kW WiFi Electric Tankless Heater offers smart control and high flow for homes with the necessary electrical infrastructure. It fits users who want app management and wall-saving design.
SIVUATEK 24 kW Point-of-Use Tankless Water Heater
Best for: point-of-use hot water applications
- Fuel Type
- Electric
- Wattage
- 24 kW
- Voltage
- 240V
- Certification
- ETL
- Dimensions
- 17.3 x 12.2 x 12.2 inches
- Use
- Whole House
View on Amazon: SIVUATEK 24 kW Point-of-Use Tankless Water Heater Affiliate link
The SIVUATEk 24kW unit offers instant hot water for point-of-use applications. It operates on 240V power and reaches temperatures above 120°F quickly. The device features a self-modulating system that adjusts energy use based on flow rate. It holds ETL certification for safety and includes multiple protection devices. This compact heater is designed for installation near sinks, showers, or washing machines to reduce wait times.
Pros
- 24kW heating capacity for rapid hot water delivery
- Self-modulating technology adjusts power to flow rate
- ETL certified for residential safety standards
- Separate water and electrical lines in heating chamber
- Compact dimensions of 17.3 x 12.2 x 12.2 inches
Cons
- Designed specifically for point-of-use rather than whole-house supply
- Requires 40A double pole circuit breakers and 8AWG wiring
- No remote control or smart app connectivity listed
Good fit if
- You need hot water at a single fixture like a sink or shower
- You have the required 240V electrical circuit with 40A breakers
- You want a compact unit that fits in tight spaces
Skip if
- You need to supply hot water to multiple fixtures simultaneously
- You only have 120V electrical outlets available
- You require whole-house heating capacity for large homes
Verdict: SIVUATEK 24kW Electric Tankless Water Heater is a practical solution for users who need immediate hot water at a single point. It suits those with the necessary 240V electrical infrastructure who prioritize compact size and safety certifications.
Camplux 24 kW Electric Tankless Water Heater
Best for: Users wanting clear digital temperature feedback
- Fuel Type
- Electric
- Wattage
- 24kW
- Voltage
- 240 Volt
- Temperature Control
- 80℉ to 140℉
- Certification
- ETL
- Dimensions
- 17.12 x 13.12 x 3.12 inches
View on Amazon: Camplux 24 kW Electric Tankless Water Heater Affiliate link
The Camplux TEW24 delivers 24 kW of heating power at 240 volts for whole-house hot water. It features a digital display that shows current water temperature and a red indicator light for active heating. The unit measures 17.12 by 13.12 by 3.12 inches and weighs 20.3 pounds. It offers self-modulating technology for efficiency and ETL certification for safety. This model suits users who want clear temperature feedback without complex controls.
Pros
- Digital display shows real-time water temperature
- 24 kW output handles multiple fixtures
- ETL certified for safety standards
- Self-modulating technology adjusts to flow
- Water-electricity separation protects components
Cons
- No Wi-Fi or smart app connectivity
- Temperature range limited to 80 to 140 degrees Fahrenheit
- Requires 8AWG wire gauge for installation
Good fit if
- You want to see the exact output temperature on the unit
- You need a straightforward electric heater without smart features
- You have 240-volt wiring ready for installation
Skip if
- You require remote control via a mobile app
- You need higher temperature settings above 140 degrees Fahrenheit
- You prefer a smaller unit with lower amperage requirements
Verdict: Camplux TEW24 24kW Electric Tankless Heater provides reliable instant hot water with a clear digital readout. It fits buyers who prioritize visible temperature data and simple operation over smart home integration.
Westinghouse 24kW 240V Wi-Fi Tankless Water Heater
Best for: smart home integration and compact installation
- Fuel Type
- Electric
- Flow Rate
- 5.6 GPM
- Wattage
- 24 kW
- Voltage
- 240 V
- Temperature Control
- 86°F–140°F, 1°F increments
- Certification
- ETL
View on Amazon: Westinghouse 24kW 240V Wi-Fi Tankless Water Heater Affiliate link
This 24 kW electric unit delivers whole-house hot water with a flow rate up to 5.6 GPM. It features Wi-Fi app control for remote temperature adjustments in 1°F increments. The compact design fits tight spaces like closets or under sinks. You get precise control via an LED display and smart home compatibility. It includes safety certifications and a scale inhibitor to maintain performance over time.
Pros
- 24 kW output supports up to 5.6 GPM flow
- Wi-Fi app control with Alexa and Google Home compatibility
- Compact dimensions of 18.7 x 14.17 x 3.94 inches
- Temperature settable from 86°F to 140°F in 1°F increments
Cons
- Requires a dedicated 100A electrical panel circuit
- Flow rate drops significantly in colder inlet water temperatures
- Professional installation is recommended for electrical safety
Good fit if
- You need whole-house hot water with smart home integration
- You have a 100A electrical panel available for installation
- You want remote temperature control via a mobile app
Skip if
- You cannot install a 100A dedicated circuit for the unit
- You live in an area with very cold inlet water and need high flow
- You prefer manual dial controls over digital app management
Verdict: Westinghouse 24kW Electric Tankless Water Heater suits homeowners who want smart connectivity and precise temperature control in a compact package, provided they have the necessary electrical capacity.
Specifications side by side
| Spec | Eemax 24 kW Electric Tankless Water Heater | Rheem 24 kW Electric Tankless Water Heater | Stiebel Eltron Tempra 24 Trend Water Heater | Westinghouse 24kW WiFi Tankless Water Heater | SIVUATEK 24 kW Point-of-Use Tankless Water Heater | Camplux 24 kW Electric Tankless Water Heater | Westinghouse 24kW 240V Wi-Fi Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | not stated | not stated | Electric | Electric | Electric | Electric | Electric |
| Flow Rate | not stated | 5.9 GPM | not stated | Max 5.55 GPM | not stated | not stated | 5.6 GPM |
| Wattage | 24 kW | 24 kW | 24 kW | 24 kW | 24 kW | 24kW | 24 kW |
| Voltage | 240 V | 240 V | 240 V | 240V | 240V | 240 Volt | 240 V |
| Temperature Control | not stated | 80°F - 140°F, 1-degree increments | 68° to 140°F | not stated | not stated | 80℉ to 140℉ | 86°F–140°F, 1°F increments |
| Certification | not stated | not stated | not stated | ETL | ETL | ETL | ETL |
| Dimensions | not stated | 14.5 in W x 18.3 in L x 3.5 in H | 14.5 x 16.6 x 4.63 in | 17" x 13" x 4.3" | 17.3 x 12.2 x 12.2 inches | 17.12 x 13.12 x 3.12 inches | 18.7 x 3.94 x 14.17 in |
| Use | not stated | Whole House | Whole House | Whole House | Whole House | not stated | Whole House |
| Features | not stated | not stated | not stated | WiFi | not stated | Digital Display | WiFi |
| Weight | not stated | 17.8 pounds | 16.1 pounds | 17 pounds | 20 pounds | 20.3 pounds | not stated |
| Model | HA024240 | RTEX-24 | 24 Trend | WET-24K-G | V7B-240B | TEW24-CA | ET024CA0G |
| Color | not stated | Gray | White | Gray 24 | Black | White | Gray 24 |
| Size | not stated | not stated | 24 (kW) | L-24 | L-24 | 240V/24kW | L-24 |
If you need different flow capacities, you can evaluate the best electric tankless water heaters by their electrical demands.
Frequently asked questions
Which 24 kW tankless water heater is best for whole-house use?
The Rheem RTEX-24 is a strong choice for whole-house applications. It delivers 24 kW of heating power at 240V. The unit measures 14.5 inches wide and 18.3 inches long. Its compact gray design fits well in utility spaces. You get precise temperature control for consistent hot water flow.
Is there a 24 kW heater with WiFi connectivity?
Yes, the Westinghouse WET-24K-G offers WiFi connectivity. It provides 24 kW of power at 240V for whole-house use. The gray unit measures 13 inches wide and 17.1 inches high. You can manage settings via an app. This option suits smart home users with 100A electrical capacity.
Which model has a digital display for temperature feedback?
The Camplux TEW24-CA features a clear digital display. It provides 24 kW of heating power at 240V. The white unit is thin, measuring only 3.12 inches long. It weighs 20.3 pounds. You get visible temperature data for simple operation without needing smart home integration.
What is the most compact 24 kW electric heater?
The Camplux TEW24-CA is the most compact option. It measures just 3.12 inches in length. The unit delivers 24 kW at 240V. It weighs 20.3 pounds and features a digital display. This slim profile is ideal for tight installations where space is limited.
Can I use a 24 kW heater for point-of-use?
Yes, the SIVUATEK V7B-240B is designed for point-of-use applications. It delivers 24 kW of power at 240V. The black unit measures 12.2 inches wide and 17.3 inches high. It provides immediate hot water for single fixtures. This compact size suits users needing targeted heating.
Which heater is best for homes with 150 A panels?
The Stiebel Eltron Tempra 24 Trend is suitable for 150 A panels. It delivers 24 kW at 240V. The white unit measures 16.6 inches wide and 14.5 inches high. It weighs 16.1 pounds. This durable choice suits buyers prioritizing solid construction over smart features.
Does the Westinghouse L-24 model have WiFi?
Yes, the Westinghouse ET024CA0G includes WiFi connectivity. It provides 24 kW of power at 240V for whole-house use. The gray unit measures 14.2 inches wide and 3.94 inches high. You get smart control in a compact package. This model fits users wanting precise temperature management.