Westinghouse 11kW Smart Wi-Fi Tankless Water Heater Review: Who It Fits and Who Should Skip It
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This westinghouse 11kw smart wi fi tankless water heater review covers the electric unit designed for single-point applications. It operates on 240V power with an 11 kW heating element. The device delivers up to 2.56 GPM of hot water. It requires a 50A double-pole breaker and 8 AWG wiring. The compact gray body mounts flush to walls. Smart features allow remote temperature adjustments via Wi-Fi. You get precise control from 86°F to 140°F. This model focuses on efficiency and space savings for homes or apartments.
What stands out
- Delivers up to 2.56 GPM for one simultaneous shower
- Smart Wi-Fi control with Alexa and Google Home compatibility
- ETL certified with four-layer safety protections
- Compact dimensions of 14.2" H x 9.5" W x 3.5" D
- Adjustable temperature settings in 1° increments
Who it fits
Good fit for
This unit fits households needing hot water for a single sink, shower, or small bathroom. It suits apartments where space is limited, thanks to its wall-mount design. Users who want remote temperature control via an app will appreciate the Wi-Fi feature. It is ideal for those with existing 240V circuits and a 50A breaker. The 46A amperage requirement means you need adequate electrical capacity. It works well for offices or small residential setups.
Who should skip it
Skip this model if you need hot water for multiple fixtures at once. The 11 kW power rating supports only one point of use effectively. Do not choose this if your electrical panel lacks a 50A double-pole breaker. Homes with older wiring that cannot handle 8 AWG cables will face installation issues. If you require higher flow rates, consider the S-14 variation instead. This unit is not designed for whole-house supply or high-demand commercial use.
Verdict: The Westinghouse 11kW unit is a practical choice for single-point applications with proper electrical infrastructure. Its smart controls and compact size make it suitable for space-constrained installations.
Key specs for this unit
Wattage: 11 kW
This heating power determines how quickly water heats as it flows through. An 11 kW element supports continuous hot water for one shower at a time. You will get steady temperatures without waiting for a tank to refill. This output suits single-point use in apartments or small homes where demand is limited.
Voltage: 240V
This unit requires a dedicated 240-volt circuit to operate safely. You cannot plug it into a standard 120V outlet. Check your electrical panel for a double-pole breaker. This voltage level is standard for high-demand tankless heaters. Ensure your home wiring matches these requirements before installation to avoid tripping or damage.
Flow rate: up to 2.56 GPM
Gallons per minute measure how much hot water you get at once. This rate handles one shower comfortably. It may struggle if you run two fixtures simultaneously. Compare this number with your showerhead’s flow rate. Lower-flow heads work better with this single-point unit for consistent temperature control.
Dimensions: 14.2" H x 9.5" W x 9.5" D
These compact measurements allow flush wall mounting in tight spaces. You save floor space compared to traditional tank heaters. The small footprint fits in closets or utility rooms. Measure your installation area carefully. This size is ideal for point-of-use setups where space is limited but reliable hot water is needed.
Design and build details
According to the listing, this unit measures 14.2 inches in height, 9.5 inches in width, and 9.5 inches in depth. It weighs 10 pounds. The compact footprint allows it to mount flush against walls. This layout saves floor space, making it suitable for small apartments, offices, or tight utility closets. The gray finish is listed as color Gray 11. The model number is WET-11K-G.
The device features an LED display for real-time status monitoring. You can adjust settings in precise 1-degree increments from 86°F to 140°F. Smart control is built-in via Wi-Fi, allowing remote temperature changes through an app or voice commands compatible with Alexa and Google Home. This digital interface replaces manual dials, offering consistent temperature management without physical interaction.
Internally, the listing notes separated water-electricity pathways. This design aims to prevent corrosion and scaling, which supports low maintenance and a longer lifespan. The unit is ETL certified with four layers of protection: leakage, overheat, dry-fire, and high voltage safeguards. These safety features are integrated into the durable build. The bottom connections use 1/2-inch NPT fittings, ensuring standard compatibility for residential plumbing installations.
Setup and everyday use details
Installation requires specific electrical infrastructure. The unit draws 46 amps and needs a 50 amp double-pole breaker. You must use 8 AWG wire for the connection. Water connections are located at the bottom and use 1/2 inch NPT fittings. The compact size allows flush wall mounting, which simplifies placement in tight spaces like closets or utility rooms.
Daily operation relies on a minimum activation flow of 0.4 GPM. If water flow drops below this threshold, the heater will not engage. Once active, the device heats water instantly as it passes through. The maximum output is 2.56 GPM, which supports one shower or multiple low-flow fixtures simultaneously.
Control is handled via an LED display or a smartphone app. You can adjust the water temperature in one-degree increments, ranging from 86°F to 140°F. The app also supports voice commands through Alexa and Google Home. This allows you to change settings without touching the unit.
Safety features include ETL certification and four layers of protection. These cover leakage, overheating, dry-fire conditions, and high voltage. Separated water and electricity pathways help prevent corrosion. This design aims to reduce maintenance needs and extend the unit's lifespan. You monitor real-time status directly on the front panel.
Before You Buy This Heater
This unit is designed for single-point use, such as one shower or a kitchen sink. You must verify your electrical panel can support a 50-amp double-pole breaker. The heater requires 8 AWG wire and draws 46 amps during operation. If your existing wiring is thinner, you will need an electrician to upgrade the circuit before installation. Water connections use standard 1/2 inch NPT fittings, which should fit most residential plumbing. The device includes smart features for remote control via Wi-Fi, but you must ensure your home network supports the required frequency. Regular maintenance involves checking for leaks and ensuring the water-electricity pathways remain clear of scaling. Compared to other models in this guide, this option prioritizes compact design and smart connectivity over high flow rates. It is not suitable for whole-house heating or simultaneous multi-point use. Verify your space can accommodate its 14.2-inch height and 9.5-inch width before purchasing.
Check before you buy
- Confirm you have a 50-amp double-pole breaker available.
- Check that your wiring is at least 8 AWG.
- Ensure you need hot water for only one point.
- Verify your Wi-Fi network supports the smart features.
- Measure space for 14.2-inch height and 9.5-inch width.
The product at a glance
Westinghouse 11kW Smart Wi-Fi Tankless Water Heater
Best for: Single-point hot water needs
- Fuel Type
- Electric
- Flow Rate
- 2.56 GPM
- Wattage
- 11kW
- Voltage
- 240V
- Temperature Control
- 86°F to 140°F, ±1°F
- Certification
- ETL
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This 11kW electric unit delivers up to 2.6 GPM for one shower or sink. It connects to Wi-Fi for app and voice control, allowing precise temperature adjustments from 86°F to 140°F. The compact 14.2-inch height saves space, while ETL certification ensures safety. You need a 50A breaker and 8 AWG wire for installation. It suits apartments or homes needing point-of-use hot water.
Pros
- Delivers up to 2.6 GPM for continuous hot water
- Wi-Fi control with Alexa and Google Home compatibility
- ETL certified with 4-layer safety protection
- Compact design mounts flush to walls
Cons
- Requires a dedicated 50A double-pole breaker
- Limited to one or two points of use
- Activation flow rate is 0.4 GPM
Good fit if
- You need hot water for a single shower or sink
- You want remote temperature control via an app
- You have space for a compact, wall-mounted unit
Skip if
- You need hot water for multiple showers at once
- You cannot install a 50A electrical circuit
- You require a higher flow rate than 2.6 GPM
Verdict: Westinghouse 11kW Electric Tankless Water Heater fits users who need reliable hot water for one or two fixtures and value smart home integration. It is a practical solution for apartments or small homes with the necessary electrical setup.
Specifications side by side
| Spec | Westinghouse 11kW Smart Wi-Fi Tankless Water Heater |
|---|---|
| Fuel Type | Electric |
| Flow Rate | 2.56 GPM |
| Wattage | 11kW |
| Voltage | 240V |
| Temperature Control | 86°F to 140°F, ±1°F |
| Certification | ETL |
| Dimensions | 14.2" x 9.5" x 3.5" |
| Features | WiFi |
| Weight | 10 pounds |
| Size | S-11 |
| Color | Gray 11 |
| Model | WET-11K-G |
Frequently asked questions
Can this heater run two showers at once?
No, it is designed for single-point hot water needs. The 11 kW element provides up to 2.56 GPM, which is sufficient for one fixture. Running multiple fixtures simultaneously would likely drop the water temperature below a comfortable level. You should install one unit per shower or sink location.
Does it work with smart home systems?
Yes, it includes built-in WiFi connectivity. This feature allows you to control the unit remotely via a smartphone app. You can monitor status and adjust settings from anywhere with an internet connection. This integration adds convenience for managing your hot water supply without needing physical access to the device.
What size electrical breaker does it require?
It requires a 50-amp double-pole breaker. The unit draws 46 amps during operation, so a 50-amp circuit provides the necessary safety margin. You must also use 8 AWG wire for the electrical connection. This specific infrastructure is mandatory for safe and proper operation of the heater.
How much space does it take up?
The unit measures 14.2 inches in height, 9.5 inches in width, and 9.5 inches in depth. It weighs only 10 pounds. This compact footprint allows it to mount flush against walls, making it suitable for tight spaces like apartments or small utility closets where floor space is limited.
Is it suitable for whole-house use?
It is not intended for whole-house applications. The product is best for single-point needs, such as one shower or a kitchen sink. While it delivers steady hot water, its 11 kW capacity is optimized for one fixture at a time. You would need multiple units for larger homes.
What voltage is needed for installation?
It operates on 240V power. This is standard for most electric tankless water heaters in the US. You must ensure your home’s electrical panel can support this voltage and the associated amperage. Incorrect voltage can damage the unit or prevent it from heating water effectively.
Where are the water connections located?
The water connections are located at the bottom of the unit. They use 1/2 inch NPT fittings for standard plumbing compatibility. This layout allows for straightforward piping connections beneath the heater. Ensure you have the correct fittings and tools ready before beginning the installation process.