What it delivers
The sanheshun 257352 3 kW Point-of-Use Tankless Water Heater is a point-of-use electric tankless rated at 3 kW on 110 volts.
Flow depends on how cold the incoming water is. Our estimate from its input: 0.5 GPM at a 45°F rise, falling to 0.3 GPM at 70°F, which is less than one 2 GPM shower on a cold-climate winter day. Size it to your fixtures.
At 110 volts 3 kW is about 27 amps. The requirement calculator shows it at 208 V too; an electrician confirms the panel.
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.
Also on the listing: features: 3000W 110V Instant Hot Water Heater, Tankless Water Heater Electric; material: Acrylonitrile Butadiene Styrene, Stainless steel heating element; model: 257352.
The listing gives dimensions of 2.9 in (W) x 7.8 in (H), a weight of 1.8 lb and control valve, remote control, screw pack in the box.
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 kW
- No venting or gas line
Trade-offs
- Winter flow is much lower
- 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 | 257352 | Retailer |
|---|---|---|
| Dimensions (seller) | 2.9"W x 7.8"H | Retailer |
| Features (seller) | 3000W 110V Instant Hot Water Heater, Tankless Water Heater Electric | Retailer |
| Power | 3 kW | Retailer |
| Voltage | 110 V | Retailer |
| Product weight | 1.8 lb | Retailer |
| Material | Acrylonitrile Butadiene Styrene, Stainless steel heating element | Retailer |
Rival units at this flow
More point-of-use water heaters rated for similar demand
Final verdict
A practical point-of-use electric tankless for one sink or a low-flow shower.
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