What it delivers
The ThermoMate ET080 8 kW Point-of-Use Tankless Water Heater is a point-of-use electric tankless rated at 8 kW on 240 volts.
Expect about 0.8 GPM with cold winter water (a 70°F rise) and 1.2 GPM when the inlet is milder (45°F rise); that is less than one 2 GPM shower in January. Size it to your fixtures.
At 240 volts 8 kW is about 33 amps. The maker calls for Double Pole 40Amp breaker. Whether your panel can carry it alongside heating and cooking loads is an electrician's call.
Small units like this suit one sink or a low-flow shower close by; at a kitchen sink's 1.5 GPM the water won't rise as far.
Listed details: material: Steel; model: ET080.
The listing gives dimensions of 8.58 in (W) x 12.2 in (H) and a weight of 9.9 lb.
Right unit for this house?
Install it when
- One sink or a low-flow shower
- A far bathroom with a long wait for hot water
Look at another unit when
- Whole-house hot water
- Kitchen sinks at full flow in cold climates
Strengths and trade-offs
Strengths
- 8 kW
- No venting or gas line
- Breakers stated by the maker
Trade-offs
- Flow drops with cold inlet water
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 | ET080 | Retailer |
|---|---|---|
| Tank | 1.56 gal | Retailer |
| Dimensions (seller) | 8.58"W x 12.2"H | Retailer |
| Features (seller) | Leak proof heating chamber, Overheat Protection, Self-modulating auto adjust power | Retailer |
| Power | 8 kW | Retailer |
| Voltage | 240 V | Retailer |
| Product weight | 9.9 lb | Retailer |
| Material | Steel | Retailer |
| Breakers (maker) | Double Pole 40Amp breaker | Retailer |
Rival units at this flow
More point-of-use water heaters rated for similar demand
- LECLOC C3000 3 kW Point-of-Use Tankless Water Heater
- Stiebel Eltron DHC 4-2 Classic 3.8 kW Point-of-Use Tankless Water Heater
- GE GE04SNLPDG 3.5 kW Point-of-Use Tankless Water Heater
- Rheem RTEX-06T 6.5 kW Point-of-Use Tankless Water Heater
Full point-of-use water heaters spec grid · Every ThermoMate unit in the catalog
Final verdict
A well-specified point-of-use electric tankless for one sink or a low-flow shower.
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