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
3.2/5
For a faucet far from the main water heater. A lifetime warranty at a low price makes it a safe point of use pick if you hire the install out.
- 8 kWHeating power
- 2 GPMMax flow
- 0.96UEF
- Limited lifetimeHeat exchanger warranty
Check price at Amazon$219
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Fits under a sink and runs on a single 40 A breaker
- Lifetime warranty when professionally installed and registered
- Cuts the wait for hot water at a faucet far from the main heater
Cons
- Enough for a sink, not a shower, except in the warmest climates
- The lifetime warranty is void without a licensed electrician and plumber 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 (this one) | 8 kW | 3.2/5 | $219 |
| EcoSmart ECO 11 | 13 kW | 3.4/5 | $244.78 |
| EcoSmart ECO 36 | 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 8 |
|---|---|
| Heating | |
| Fuel | Electric |
| Electric power | 8 kW |
| Max flow | 2 GPM |
| UEF | 0.96 |
| Installation | |
| Voltage | 240 V |
| Breakers | 40 A total |
| Weight | 4.8 lb |
| Features | |
| Built-in recirculation | No |
| Wi-Fi | No |
| Heat exchanger warranty | Limited lifetime |
Alternatives in this fuel
EcoSmart ECOS 27
#7 in ElectricFull review
A low cost whole home heater for a two bathroom house in a warm climate. The short warranty is the tradeoff for the price.
Amazon $549$549
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
Compare
Compare the EcoSmart ECO 8 with any other tankless water heater →
More from EcoSmart: every EcoSmart product ranked.