What it delivers
The Westinghouse ET024CA0G 24 kW Electric Tankless Water Heater is a whole-house electric tankless rated at 24 kW on 240 volts. Its listing gives a maximum flow of 5.6 GPM.
Worked out from its input, it delivers roughly 3.6 GPM when the water only has to rise 45°F, and 2.3 GPM at a 70°F winter rise: 1 shower at 2 GPM in summer, 1 shower at 2 GPM in winter. Size it to your fixtures.
At 240 volts 24 kW is about 100 amps. A licensed electrician confirms the panel, the service and the wire before it goes in.
Electric tankless units need no venting and no gas, and work best where inlet water stays mild, because every degree of rise costs flow.
Other listed details: connections: 3/4" npt; connectivity: Wi-Fi; material: Copper Heating Elements & Sheet Metal; model: ET024CA0G.
The listing gives dimensions of 14.17 in (W) x 3.94 in (H).
Right unit for this house?
Install it when
- One shower at a time in mild climates
- Homes with no gas service
Look at another unit when
- Panels without spare capacity
- More than 1 shower at once in cold winters
Strengths and trade-offs
Strengths
- 24 kW
- Up to 5.6 GPM
- No venting or gas line
Trade-offs
- Draws about 100 A
- Winter flow is much lower
- Breaker needs not stated
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | ET024CA0G | Retailer |
|---|---|---|
| Dimensions (seller) | 14.17"W x 3.94"H | Retailer |
| Power | 24 kW | Retailer |
| Voltage | 240 V AC | Retailer |
| Max flow (maker) | 5.6 GPM | Retailer |
| Material | Copper Heating Elements & Sheet Metal | Retailer |
| Connections | 3/4" npt | Retailer |
| Connectivity | Wi-Fi | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- Stiebel Eltron Tempra 20 Plus 19.2 kW Electric Tankless Water Heater
- Mount Steel MST-TLS18A 19 kW Electric Tankless Water Heater
- ThermoMate ET360 36 kW Electric Tankless Water Heater
- Stiebel Eltron Tempra 29 Plus 28.8 kW Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every Westinghouse unit in the catalog
Final verdict
A sensible whole-house electric tankless for one shower at a time in mild climates.
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