Westinghouse Wifi Tankless Water Heater Alternatives: 6 Similar Picks Compared
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The Westinghouse WiFi tankless water heater delivers whole-house hot water with smart control and a 24 kW output. If you are searching for westinghouse wifi tankless water heater alternatives, you might need a different spec, size, feature or brand to fit your home better. This unit offers 5.55 GPM and app-based management, but it requires a robust electrical setup with 100A breakers. Some buyers may prefer a smaller footprint or a lower wattage model for simpler installations.
We selected 6 alternatives that overlap with the original’s key specifications. These picks include options with similar voltage, fuel type, and use cases. You can find models with higher flow rates for large families or more compact designs for tight spaces. This guide compares them strictly by their published data. You will see how each unit handles temperature stability, connectivity, and physical dimensions. The goal is to help you choose the right heater based on your specific electrical capacity and hot water demands.
Our top pick: Westinghouse 24kW WiFi Tankless Water Heater.
Comparing Key Specs and Features
Westinghouse 24kW 240V Wi-Fi Tankless Water Heater
This Westinghouse model shares the 24 kW power and WiFi connectivity of the original, but it offers a significantly slimmer profile. At just 3.94 inches deep, it mounts much flatter against your wall than the original’s 4.3-inch depth. This compact design suits tight installation spaces better. However, it lacks the specific weight and dimensional data found in the original, so you must verify fitment carefully. If your primary goal is smart control with minimal protrusion into your utility area, this flat design is a practical alternative to the bulkier original unit.
Rheem 18kW 240V Electric Tankless Water Heater
The Rheem unit steps down to 18 kW, reducing power compared to the original’s 24 kW. This lower output means a lower maximum flow rate, making it better for smaller households or single-bathroom setups rather than whole-house simultaneous use. It is lighter at 14.8 pounds and slightly narrower. You give up some raw capacity for a more compact footprint that fits tighter spaces. If you do not need the highest possible flow rate and want a reliable, space-saving electric option, this model provides a solid, budget-friendly alternative to the higher-wattage original.
WINTEMP 36kW Electric Tankless Water Heater
This WINTEMP model jumps up to 36 kW, offering significantly more power than the original’s 24 kW. It also includes WiFi control, matching the original’s smart features. The trade-off is size and weight; at 36.1 pounds and 21.1 inches tall, it is much larger and heavier. It requires robust electrical infrastructure to handle the increased load. If you have a large home with multiple bathrooms running hot water at once and ample electrical capacity, this high-output unit provides superior flow rates compared to the original, assuming your wiring can support the demand.
NOVIEEX 27kW 7.4 GPM Electric Tankless Water Heater
The NOVIEEX heater offers 27 kW, slightly more power than the original’s 24 kW, and claims a high flow rate of 7.4 GPM. It is designed for indoor whole-house use but lacks explicit WiFi features in its listed attributes, unlike the original’s smart connectivity. It is also heavier and taller. You gain potential flow capacity but lose the app-based control and monitoring. If your priority is maximum hot water output for simultaneous use and you do not need smart home integration, this unit provides a powerful alternative to the original’s balanced spec sheet.
WINTEMP 27kW Electric Tankless Water Heater
This WINTEMP model matches the original’s 240V voltage but steps down to 27 kW, offering a middle ground between the original’s 24 kW and larger 36 kW units. It includes WiFi control, maintaining the smart connectivity feature. It is lighter at 21.5 pounds and has a similar width. The key difference is the specific wattage and potentially different flow characteristics. If you want smart control with a slightly different power profile and a compact design, this model serves as a strong alternative. It balances modern features with a manageable size for most standard electrical setups.
Camplux 27 kW Digital Electric Tankless Water Heater
The Camplux unit offers 27 kW, slightly more power than the original’s 24 kW, but it lacks WiFi connectivity. Instead, it features a digital display for precise temperature monitoring. This appeals to users who prefer physical feedback over app control. It is lighter at 20.3 pounds and has a similar width. You trade smart home integration for direct temperature visibility and a potentially simpler interface. If you value clear, immediate feedback on water temperature and do not require remote app management, this model provides a reliable, spec-focused alternative to the original’s connected design.
Quick picks
Our 7 picks
Westinghouse 24kW WiFi Tankless Water Heater
Best for: Whole-house hot water with smart home control
- 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
The Westinghouse 24kW unit delivers up to 5.55 GPM at 240V, supporting whole-house use. Its compact 17 x 13 x 4.3-inch frame mounts flush against walls. You get smart WiFi control for remote temperature adjustments and voice commands via Alexa or Google Home. This model suits homes needing reliable, on-demand hot water with modern connectivity features.
Pros
- Provides up to 5.55 GPM flow rate for simultaneous use
- Integrates with Alexa and Google Home for voice control
- Compact dimensions allow flush wall mounting to save space
Cons
- Requires 100A electrical capacity with three 40-amp breakers
- High starting flow rate of 0.79 GPM may limit low-flow efficiency
- Heavier at 17 pounds, requiring sturdy wall support
Good fit if
- You need whole-house hot water for multiple fixtures
- You want smart home integration for remote monitoring
- You have the electrical capacity for a 100A circuit
Skip if
- You only have a standard 40-amp single circuit available
- You need a unit for a single sink only
- You prefer a lighter installation under 15 pounds
Verdict: Westinghouse 24kW Electric Tankless Water Heater fits homes with robust electrical setups that value smart connectivity and high flow rates for whole-house use.
Westinghouse 24kW 240V Wi-Fi Tankless Water Heater
Best for: Smart control and compact whole-house heating
- 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 Westinghouse unit delivers 24kW of power at 240V, providing instant hot water for whole-house use. It reaches up to 5.6 GPM at warm inlet temperatures, dropping to 3.5 GPM in colder conditions. You get precise control via an LED display and a Wi-Fi app compatible with Alexa and Google Home. Its compact size fits tight spaces, and it includes ETL certification for safety.
Pros
- 24kW heating power for whole-house use
- Wi-Fi app control with Alexa and Google Home compatibility
- Precise temperature settings in 1°F increments
- Compact dimensions save space in tight areas
- ETL certified with overheat and leak protection
Cons
- Lower flow rate of 3.5 GPM in cold inlet conditions
- Requires a dedicated 100A electrical panel
- Professional installation is recommended
Good fit if
- You need whole-house hot water in a compact unit
- You want remote temperature adjustments via a smartphone app
- You have a 240V electrical system with sufficient capacity
Skip if
- You live in an area with very cold groundwater and need high flow
- Your electrical panel cannot support a 100A circuit
- You prefer a unit that does not require professional installation
Verdict: Westinghouse 24kW WiFi Electric Tankless fits homes with strong electrical infrastructure that value smart control and space-saving design. It is ideal for users who prioritize app-based management over maximum flow in freezing conditions.
Rheem 18kW 240V Electric Tankless Water Heater
Best for: compact installations with moderate hot water needs
- Fuel Type
- Electric
- Flow Rate
- 4.4 GPM
- Wattage
- 18 kW
- Voltage
- 240 V
- Temperature Control
- ±1°F
- Dimensions
- 3.5 x 14.5 x 18.5 inches
View on Amazon: Rheem 18kW 240V Electric Tankless Water Heater Affiliate link
The Rheem RTEX-18 is a compact 18kW electric tankless water heater designed for whole-house use. It delivers up to 4.4 GPM at 240V. The unit features external digital thermostatic control with ±1°F accuracy. Its small footprint measures 3.5 x 14.5 x 18.5 inches. This model suits homes with moderate hot water demands where space is limited. It offers precise temperature management through self-modulation technology.
Pros
- 18kW power output for efficient heating
- Compact 3.5-inch depth saves wall space
- ±1°F temperature accuracy for stable output
- Self-modulation adjusts power to demand
- Field-serviceable copper immersion elements
Cons
- Lower 18kW wattage than 24kW or 36kW alternatives
- No built-in WiFi connectivity mentioned
- Max flow rate of 4.4 GPM may limit simultaneous use
Good fit if
- You need a compact unit for tight spaces
- You prioritize precise temperature control over high flow
- You have a 240V electrical setup
Skip if
- You require WiFi remote control
- You need higher flow rates for multiple bathrooms
- You want the highest available wattage
Verdict: Rheem 18kW 240V Electric Tankless is a space-saving option for buyers who value precise temperature stability over maximum flow. It fits homes with moderate usage patterns and limited installation space.
WINTEMP 36kW Electric Tankless Water Heater
Best for: large homes with strong electrical service
- Fuel Type
- Electric
- Flow Rate
- Up to 8.7 GPM
- Wattage
- 36 kW
- Voltage
- 240V
- Certification
- ETL
- Dimensions
- 21.5 x 13.7 x 5.2 inches
View on Amazon: WINTEMP 36kW Electric Tankless Water Heater Affiliate link
The Wintemp WN36 is a 36kW electric tankless water heater designed for whole-house use. It delivers up to 8.7 GPM at 240V, making it suitable for homes with three to five bathrooms. Built-in WiFi allows remote temperature control via smartphone. The unit measures 13.7 x 21.5 x 5.2 inches and weighs 36.1 pounds. It carries ETL certification and includes a two-year replacement warranty.
Pros
- High 36kW power output for multiple bathrooms
- WiFi connectivity for remote control
- ETL certified for safety
- Compact wall-mounted design
Cons
- Requires four 40A double-pole circuit breakers
- Draws up to 150A maximum current
- Only includes a two-year replacement warranty
Good fit if
- You have a 300A electrical service
- You need hot water for three to five bathrooms
- You want remote temperature adjustment via WiFi
Skip if
- You have a standard 100A or 200A electrical panel
- You cannot install four separate 40A breakers
- You need a warranty longer than two years
Verdict: The Wintemp 36kW Electric Tankless Water Heater fits large homes with robust electrical infrastructure. It provides high flow rates and smart control for families needing hot water in multiple bathrooms simultaneously.
NOVIEEX 27kW 7.4 GPM Electric Tankless Water Heater
Best for: High-flow whole-house indoor use
- Fuel Type
- Electric
- Flow Rate
- 7.4 GPM
- Wattage
- 27kW
- Installation Location
- Indoor
- Voltage
- 240V
- Temperature Control
- 77°F to 140°F, 1°F increments
View on Amazon: NOVIEEX 27kW 7.4 GPM Electric Tankless Water Heater Affiliate link
The NOVIEEX 27kW unit is an indoor electric tankless water heater designed for whole-house use. It delivers up to 7.4 GPM at 240V, supporting three to four simultaneous water points. The device features a slim 3.18-inch depth and precise 1°F temperature increments. It offers 99.8% energy efficiency and an 8-layer safety system. This model suits homes with adequate 3x40A electrical capacity needing high flow rates.
Pros
- 27kW power output for whole-house demand
- 7.4 GPM max flow rate
- Precise 1°F temperature control increments
- 99.8% energy conversion efficiency
- Slim 3.18-inch depth for compact installation
Cons
- Requires 3x40A circuit breakers and 8 AWG wiring
- Indoor installation only
- 1-year warranty period
Good fit if
- You need high flow for multiple showers
- You have a dedicated 240V electrical setup
- You want precise temperature locking
Skip if
- You lack space for 3x40A breakers
- You need outdoor rated durability
- You prefer longer than 1-year warranty
Verdict: NOVIEEX 27kW Electric Tankless Heater provides high flow and precise control for homes with strong electrical infrastructure. It fits buyers who prioritize simultaneous multi-point usage over easy retrofitting.
WINTEMP 27kW Electric Tankless Water Heater
Best for: homes needing high flow and smart control
- Fuel Type
- Electric
- Flow Rate
- 6.5 GPM
- Wattage
- 27kW
- Voltage
- 240V
- Temperature Control
- 86°F to 140°F
- Certification
- ETL
View on Amazon: WINTEMP 27kW Electric Tankless Water Heater Affiliate link
The WINTEMP WM27V is a 27 kW electric tankless water heater designed for whole-house use. It delivers up to 6.5 GPM of hot water at 240V. Smart WiFi control via the Tuya app lets you adjust temperatures between 86°F and 140°F remotely. Its compact 4.2-inch depth saves space. This unit suits homes with adequate electrical service, requiring three 40-amp breakers.
Pros
- 27 kW output for high flow rates
- WiFi app control for remote adjustments
- Compact 4.2-inch depth saves wall space
- ETL certified for safety standards
Cons
- Requires three 40-amp double-pole breakers
- Needs 8 AWG wiring for installation
- 2-year limited manufacturer warranty
Good fit if
- You need high flow for multiple bathrooms
- You want remote temperature control via app
- You have space for wall-mounted units
Skip if
- You cannot install three 40-amp breakers
- You prefer a longer warranty period
- You have limited electrical service capacity
Verdict: WINTEMP 27kW WiFi Electric Heater is a strong option for homes needing high flow and smart control, provided you have the electrical infrastructure to support its 113-amp demand.
Camplux 27 kW Digital Electric Tankless Water Heater
Best for: Users wanting clear temperature feedback
- Fuel Type
- Electric
- Wattage
- 27kW
- Voltage
- 240V
- Temperature Control
- 80°F to 140°F
- Certification
- ETL
- Dimensions
- 17.12 x 13.12 x 3.12 inches
View on Amazon: Camplux 27 kW Digital Electric Tankless Water Heater Affiliate link
The Camplux TEW27 delivers 27kW of power at 240V for whole-house use. Its digital display shows current water temperature, earning the badge for Best digital display. Self-modulating technology reaches 99.8% efficiency. It heats water in under three seconds with a minimum flow of 0.66 GPM. The unit measures 17.1 by 13.1 by 3.12 inches. You get stable output between 80°F and 140°F with ETL certification for safety.
Pros
- 27kW output at 240V for whole-house demand
- Digital display shows real-time water temperature
- 99.8% heating efficiency via self-modulating tech
- ETL certified for safety protection
Cons
- No Wi-Fi connectivity mentioned in data
- Warranty is only two years for parts
- Requires 8AWG wiring for installation
Good fit if
- You want a clear digital temperature readout
- You need high efficiency for energy savings
- You have 240V wiring ready
Skip if
- You require smart home integration
- You prefer a longer warranty period
- You cannot install heavy wiring
Verdict: Camplux 27kW 240V Electric Tankless offers precise temperature monitoring for users who value visibility over connectivity. It suits those prioritizing efficiency and clear feedback.
Specifications side by side
| Spec | Westinghouse 24kW WiFi Tankless Water Heater | Westinghouse 24kW 240V Wi-Fi Tankless Water Heater | Rheem 18kW 240V Electric Tankless Water Heater | WINTEMP 36kW Electric Tankless Water Heater | NOVIEEX 27kW 7.4 GPM Electric Tankless Water Heater | WINTEMP 27kW Electric Tankless Water Heater | Camplux 27 kW Digital Electric Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | Electric | Electric | Electric | Electric | Electric | Electric | Electric |
| Flow Rate | Max 5.55 GPM | 5.6 GPM | 4.4 GPM | Up to 8.7 GPM | 7.4 GPM | 6.5 GPM | not stated |
| Wattage | 24 kW | 24 kW | 18 kW | 36 kW | 27kW | 27kW | 27kW |
| Installation Location | not stated | not stated | not stated | not stated | Indoor | not stated | not stated |
| Voltage | 240V | 240 V | 240 V | 240V | 240V | 240V | 240V |
| Temperature Control | not stated | 86°F–140°F, 1°F increments | ±1°F | not stated | 77°F to 140°F, 1°F increments | 86°F to 140°F | 80°F to 140°F |
| Certification | ETL | ETL | not stated | ETL | not stated | ETL | ETL |
| Dimensions | 17" x 13" x 4.3" | 18.7 x 3.94 x 14.17 in | 3.5 x 14.5 x 18.5 inches | 21.5 x 13.7 x 5.2 inches | 15.86" H x 14.13" W x 3.18" D | 15.9" H × 13" W × 4.2" D | 17.12 x 13.12 x 3.12 inches |
| Use | Whole House | Whole House | Whole House | Whole House | Whole House | Whole House | Whole House |
| Features | WiFi | WiFi | not stated | WiFi | not stated | WiFi | Digital Display |
| Weight | 17 pounds | not stated | 14.8 pounds | 36.1 pounds | not stated | 21.5 pounds | 20.3 pounds |
| Size | L-24 | L-24 | Small | 36kW | not stated | 27 (kW) | 240V/27kW |
| Color | Gray 24 | Gray 24 | Gray | Gray | Silver | Gray | White |
| Model | WET-24K-G | ET024CA0G | RTEX-18 | WN36 | DS-18 | WM27V | TEW27 |
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Frequently asked questions
Which alternative offers the highest flow rate for large homes?
The WINTEMP 36kW Electric Tankless Water Heater is the highest-power option listed. It delivers 36 kW of heating capacity, making it suitable for large homes with robust electrical infrastructure. This model supports simultaneous hot water use in multiple bathrooms. It includes WiFi connectivity for smart control, allowing you to monitor and adjust settings remotely.
Is there a slimmer alternative to the standard Westinghouse 24kW model?
Yes, the Westinghouse 24kW 240V Wi-Fi Tankless Water Heater features a significantly slimmer profile. It measures just 3.94 inches in depth, compared to the standard model’s larger footprint. Despite its compact size, it maintains the same 24 kW output and WiFi connectivity. This design allows for easier installation in tight spaces without sacrificing whole-house heating performance.
What is the most compact electric tankless option available?
The Rheem 18kW 240V Electric Tankless Water Heater is the most compact choice. It weighs only 14.8 pounds and has a small footprint, making it ideal for limited installation spaces. While it has a lower 18 kW output than the Westinghouse models, it provides precise temperature stability. It is a practical solution for homes with moderate hot water needs.
Do any alternatives include a digital display for temperature feedback?
The Camplux 27 kW Digital Electric Tankless Water Heater includes a digital display for clear temperature monitoring. This feature allows you to see the exact water temperature at a glance. It offers 27 kW of power for whole-house use. This model is ideal for users who prioritize visible feedback over WiFi connectivity, ensuring precise control during use.
Which heater is best suited for high-flow indoor applications?
The NOVIEEX 27kW 7.4 GPM Electric Tankless Water Heater is designed for high-flow indoor use. It provides 27 kW of power to support simultaneous multi-point usage throughout your home. The unit is built for indoor installation and offers precise control over water temperature. It is a strong option for homes with strong electrical infrastructure that require consistent hot water delivery.
Are there other WiFi-enabled options with similar power to the Westinghouse?
The WINTEMP 27kW WiFi Electric Heater offers similar smart capabilities with 27 kW of power. It includes WiFi connectivity for remote management and monitoring. This model requires a robust electrical setup to handle its high amp demand. It is a suitable alternative for homes needing high flow rates and smart control features comparable to the Westinghouse 24kW model.