What it delivers
The EcoSmart POU 4T 3.5 kW Point-of-Use Tankless Water Heater is a point-of-use electric tankless rated at 3.5 kW on 120 volts. Its listing gives a maximum flow of 0.8 GPM.
At a 45°F rise (mild inlet water to a 120°F set point) it holds about 0.5 GPM, less than one 2 GPM shower; in winter, at a 70°F rise, about 0.3 GPM, less than one 2 GPM shower. Try your own inlet temperature.
At 120 volts 3.5 kW is about 29 amps. Whether your panel can carry it alongside heating and cooking loads is an electrician's call.
Point-of-use units go under or beside one sink, where a short pipe run means hot water in seconds.
From the listing: features: On-Demand Hot Water, Energy-Efficient, Space-Saving Design; material: Stainless Steel; model: POU 4T.
The listing gives dimensions of 11 in (W) x 7 in (H) and a weight of 4 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
- 3.5 kW
- Up to 0.8 GPM
- No venting or gas line
Trade-offs
- Weak at a large winter rise
- Breaker needs not stated
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 | POU 4T | Retailer |
|---|---|---|
| Tank | 0.5 gal | Retailer |
| Dimensions (seller) | 11"W x 7"H | Retailer |
| Features (seller) | On-Demand Hot Water, Energy-Efficient, Space-Saving Design | Retailer |
| Power | 3.5 kW | Retailer |
| Voltage | 120 V | Retailer |
| Max flow (maker) | 0.8 GPM | Retailer |
| Product weight | 4 lb | Retailer |
| Material | Stainless Steel | Retailer |
Rival units at this flow
More point-of-use water heaters rated for similar demand
- Ranein RE8K-U 8 kW Point-of-Use Tankless Water Heater
- ThermoMate ET060 6 kW Point-of-Use Tankless Water Heater
- Eemax EEM12004 4 kW Point-of-Use Tankless Water Heater
- Stiebel Eltron 220816 3 kW Point-of-Use Tankless Water Heater
Full point-of-use water heaters spec grid · Every EcoSmart unit in the catalog
Final verdict
A solid point-of-use electric tankless for one sink or a low-flow shower.
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