Stiebel Eltron Tempra 24 Trend
#4 in ElectricFull review
A whole home heater for a two bathroom house in a warm or mild climate with 150 A service or more. The 7 year leakage warranty is the main reason to pay over the Rheem.
Amazon $514.23$514.23
The Stiebel Eltron Tempra 24 Trend is the better tankless water heater overall, rated 3.6 to 3.2. The Stiebel Eltron Tempra 24 Trend leads on value and heating power. The Stiebel Eltron Tempra 24 Trend costs $30.20 less ($514.23 vs $544.43).
Stiebel Eltron Tempra 20 Trend
#9 in ElectricFull review
For a small home or apartment in a warm climate with 125 A service. The Tempra 24 costs little more and gives more headroom.
Amazon $544.43$544.43
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.
Which should you buy?
- Choose the Stiebel Eltron Tempra 24 Trend for value ($21.43 per kW ($514.23, 24 kW) vs $28.36 per kW ($544.43, 19.2 kW)) and heating power (24 kW vs 19.2 kW).
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 | Stiebel Eltron Tempra 24 Trend | Stiebel Eltron Tempra 20 Trend |
|---|---|---|
| Overall rating | 3.6/5 | 3.2/5 |
| Value 35% | 56 $21.43 per kW ($514.23, 24 kW) | 35 $28.36 per kW ($544.43, 19.2 kW) |
| Heating power 25% | 52 24 kW | 33 19.2 kW |
| Efficiency 15% | 87 0.97 UEF | 87 0.97 UEF |
| Warranty 25% | 57 7-year heat exchanger warranty | 57 7-year heat exchanger warranty |
Specifications
| Stiebel Eltron Tempra 24 Trend | Stiebel Eltron Tempra 20 Trend | |
|---|---|---|
| Heating | ||
| Fuel | Electric | Electric |
| Electric power | 24 kW | 19.2 kW |
| Max flow | 5 GPM | 4 GPM |
| UEF | 0.97 | 0.97 |
| Installation | ||
| Voltage | 240 V | 240 V |
| Breakers | 100 A total | 80 A total |
| Weight | 16.1 lb | 16.1 lb |
| Features | ||
| Built-in recirculation | No | No |
| Wi-Fi | No | No |
| Heat exchanger warranty | 7 years | 7 years |
| Parts warranty | 3 years | 3 years |