Westinghouse WET-24K-G
#6 in ElectricFull review
For buyers who want app control on a whole home electric heater. Without published warranty terms, the Stiebel Tempra 24 Trend is the safer buy at the same price.
Amazon $499.99$499.99
The Westinghouse WET-24K-G is the better tankless water heater overall, rated 3.4 to 3.0. The Westinghouse WET-24K-G costs $49.01 less ($499.99 vs $549).
Rheem RTEX-24
#12 in ElectricFull review
A mainstream whole home heater for a two bathroom house in a warm climate. The Stiebel Tempra 24 Trend costs about the same with a longer warranty.
Amazon $549$549
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every electric tankless water heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Westinghouse WET-24K-G | Rheem RTEX-24 |
|---|---|---|
| Overall rating | 3.4/5 | 3.0/5 |
| Value 35% | 58 $20.83 per kW ($499.99, 24 kW) | 51 $22.88 per kW ($549, 24 kW) |
| Heating power 25% | 52 24 kW | 52 24 kW |
| Efficiency 15% | 50 UEF not published (neutral score used) | 38 0.93 UEF |
| Warranty 25% | 50 heat exchanger warranty not published (neutral score used) | 29 5-year heat exchanger warranty |
Specifications
| Westinghouse WET-24K-G | Rheem RTEX-24 | |
|---|---|---|
| Heating | ||
| Fuel | Electric | Electric |
| Electric power | 24 kW | 24 kW |
| Max flow | 5.5 GPM | 5.9 GPM |
| UEF | - | 0.93 |
| Installation | ||
| Voltage | 240 V | 240 V |
| Breakers | 120 A total | 120 A total |
| Features | ||
| Built-in recirculation | No | No |
| Wi-Fi | Yes | No |
| Heat exchanger warranty | - | 5 years |
| Parts warranty | - | 1 year |