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Compact white rectangular tankless water heater with digital display

Ecosmart

Ecosmart POU3.5 3.5 kW 120V point-of-use water heater

SKU CH-X138-545D8

Compact 3.5 kW 120V tankless heater delivers instant hot water at 0.25 GPM activation with 99.8% efficiency for single fixtures

  • Saves up to 60% on water heating costs with electric tankless technology
  • Delivers continuous hot water on demand for single-point applications
  • Achieves 99.8% energy efficiency with standard serviceable elements
  • Activates at low 0.25 GPM flow for reliable operation
  • Compact 7 x 11 x 3 inch design fits under sinks and tight spaces

Compact point-of-use water heater

The EcoSmart POU3.5 is a 3.5 kW electric tankless unit that runs on a standard 120 V circuit. It is built for single fixtures such as bathroom sinks, wet bars, RVs or boats where a compact heater can sit under the cabinet. The 0.25 GPM activation flow means it fires up with very little water demand.

Sustained load performance

Because the heater is tankless, it delivers continuous hot water without the recovery delay of a storage tank. The 99.8 % energy efficiency rating indicates that almost all input power becomes usable heat during extended draws. Standard heating elements and a serviceable heat exchanger keep output stable over long periods of use.

Deciding specification

The 3.5 kW rating at 120 V is the single figure that determines whether this model suits the installation. A 120 V supply limits total power, so the unit fits only low-flow, single-point applications. Buyers needing higher flow for showers or multiple outlets will need a higher-voltage or higher-kilowatt model.

How it compares

Measured against everything we stock in Water Heater Parts & Add-Ons, at today’s prices. Recalculated every night.

Price $231.99
Pricier than about 62% of the 85 comparable items (median $163.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much power does the 3.5 kW 120V heater draw when running continuously?

It operates at 3.5 kW on a 120V supply; the unit is rated at 99.8% energy efficiency, so nearly all input power becomes heat.

What plumbing and electrical connections must already be in place for installation?

You need a 120V circuit and water lines that can deliver at least 0.25 GPM to activate the heater; the unit measures 7 in by 11 in by 3 in for fitting under a sink.

Will the 0.25 GPM activation flow work with older low-flow faucets?

Yes, the heater activates at 0.25 GPM, which is low enough for most older bathroom sink aerators to trigger hot water.

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