What it delivers
The Westinghouse WET-24K-G 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.
At a 45°F rise (mild inlet water to a 120°F set point) it holds about 3.6 GPM, 1 shower at 2 GPM; in winter, at a 70°F rise, about 2.3 GPM, 1 shower at 2 GPM. Try your own inlet temperature.
At 240 volts 24 kW is about 100 amps. The maker calls for 3 X 40 AMP (DP) breakers. The requirement calculator shows it at 208 V too; an electrician confirms the panel.
It skips venting entirely, but the amps are the hurdle: check the panel before the plumbing.
From the listing: connections: 3/4-inch NPT; connectivity: WiFi; material: Sheet Metal; model: WET-24K-G.
The listing gives dimensions of 12.99 in (W) x 17.05 in (H), a weight of 17 lb and rubber gasket for outlet and inlet 2 pieces in the box.
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
- Breakers stated by the maker
Trade-offs
- Draws about 100 A
- Weak at a large winter rise
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 | WET-24K-G | Retailer |
|---|---|---|
| Dimensions (seller) | 12.99"W x 17.05"H | Retailer |
| Power | 24 kW | Retailer |
| Voltage | 240 V AC | Retailer |
| Max flow (maker) | 5.56 GPM | Retailer |
| Product weight | 17 lb | Retailer |
| Material | Sheet Metal | Retailer |
| Breakers (maker) | 3 X 40 AMP (DP) breakers | Retailer |
| Connections | 3/4-inch NPT | Retailer |
| Connectivity | WiFi | Retailer |
Rival units at this flow
More electric tankless water heaters rated for similar demand
- Westinghouse ET018CA0G 18 kW Electric Tankless Water Heater
- Atmor AT-36N-XTP 36 kW Electric Tankless Water Heater
- WINTEMP WN36 Electric Tankless Water Heater
- EcoSmart ECOS 27 Electric Tankless Water Heater
Full electric tankless water heaters spec grid · Every Westinghouse unit in the catalog
Final verdict
A solid whole-house electric tankless for one shower at a time in mild climates.
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