Stiebel Eltron Tempra 36 Trend
#2 in ElectricFull review
The pick for a larger home with 300 A service that wants electric whole house hot water, even in cooler regions. Few electric heaters match its power and warranty.
Amazon $749$749
4.3/5
For a large home with 300 A service that wants all electric hot water. The lifetime warranty and low price per kilowatt make it a strong value if a pro installs it.
- 36 kWHeating power
- 8.8 GPMMax flow
- 0.94UEF
- Limited lifetimeHeat exchanger warranty
Check price at Amazon$699
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Enough power for several fixtures at once in most of the country
- Lifetime warranty when professionally installed and registered
- Costs less per kilowatt than almost any other whole home electric heater
Cons
- Needs four 40 A breakers and about 300 A service
- The lifetime warranty is void without professional install and registration within 30 days
The EcoSmart ECO family
Every EcoSmart ECO model we rank, smallest first. Ratings compare each against its own fuel.
| Model | Heating power | Rating | Price |
|---|---|---|---|
| EcoSmart ECO 8 | 8 kW | 3.2/5 | $219 |
| EcoSmart ECO 11 | 13 kW | 3.4/5 | $244.78 |
| EcoSmart ECO 36 (this one) | 36 kW | 4.3/5 | $699 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its fuel. How we rank explains each one.
Specifications
| Model number | ECO 36 |
|---|---|
| Heating | |
| Fuel | Electric |
| Electric power | 36 kW |
| Max flow | 8.8 GPM |
| UEF | 0.94 |
| Installation | |
| Voltage | 240 V |
| Breakers | 160 A total |
| Weight | 18.4 lb |
| Features | |
| Built-in recirculation | No |
| Wi-Fi | No |
| Heat exchanger warranty | Limited lifetime |
Alternatives in this fuel
Stiebel Eltron Tempra 29 Trend
#3 in ElectricFull review
For homes with 200 A service in mild climates that want two showers at once from one heater.
Amazon $639.99$639.99
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
Compare
Compare the EcoSmart ECO 36 with any other tankless water heater →
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