Mini-tank heater ยท KENUOS

KENUOS WTank25DI 2.5-Gallon Mini-Tank Water Heater

2.5-gallon mini-tank heater

2.5 gal tank1.5 kW120 V

Updated October 2026

The short answer

A sensible mini-tank heater for one sink far from the main heater.

Delivers
2.5-gallon tank.
Watch for
Runs out after its stored gallons.
Suits
One sink far from the main heater.
Max flow (maker)
0.75 GPM
Power
1.5 kW
Voltage
120 V AC
Tank
2.5 gal
Connections
1/2"npt
Material
Acrylonitrile Butadiene Styrene, Stainless Steel
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What it delivers

The KENUOS WTank25DI 2.5-Gallon Mini-Tank Water Heater is a mini-tank heater holding 2.5 gallons, rated at 1.5 kW on 120 volts.

It stores a few gallons of hot water right at the fixture, so the tap runs hot at once instead of waiting for the main heater.

At 120 volts it plugs into or wires to an ordinary household circuit, which is why mini tanks are a common retrofit.

Other listed details: connections: 1/2"npt; material: Acrylonitrile Butadiene Styrene, Stainless Steel; model: WTank25DI.

The listing gives dimensions of 11.4 in (W) x 11.4 in (H) and a weight of 8 lb.

Right unit for this house?

Install it when

  • One sink far from the main heater
  • Wet bars, garages and offices

Look at another unit when

  • Showers or whole-house use
  • Long continuous draws

Strengths and trade-offs

Strengths

  • 2.5-gallon tank
  • 120 V
  • Hot water at the tap in seconds

Trade-offs

  • Runs out after its stored gallons
  • Needs room under the sink

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 numberWTank25DIRetailer
Tank2.5 galRetailer
Dimensions (seller)11.4"W x 11.4"HRetailer
Features (seller)Flame Failure Protection, High Water Pressure Protection, LED Display, Overheat Protection, Pressure Release Valve Flame Failure Protection, High Water Pressure Protection, LED Display, Overheat Protection, Pressure Release ValveRetailer
Power1.5 kWRetailer
Voltage120 V ACRetailer
Max flow (maker)0.75 GPMRetailer
Product weight8 lbRetailer
MaterialAcrylonitrile Butadiene Styrene, Stainless SteelRetailer
Connections1/2"nptRetailer

Rival units at this flow

More point-of-use water heaters rated for similar demand

Full point-of-use water heaters spec grid

Final verdict

A sensible mini-tank heater for one sink far from the main heater.

Buy this unit

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Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What is the KENUOS WTank25DI 2.5-Gallon Mini-Tank Water Heater for?
The KENUOS WTank25DI 2.5-Gallon Mini-Tank Water Heater is a mini-tank heater holding 2.5 gallons, rated at 1.5 kW on 120 volts.