US
EcoSmart

EcoSmart POU 4T Point of Use Tankless Water Heater

  • 3.5kW at 120 volts
  • 0.8 gpm flow rate
  • 140 F maximum temperature
  • 150 psi maximum pressure
  • Wall mount, 11" x 7"
  • 4 pounds
  • Single sink point of use

Updated 5 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A tiny thermostatic tankless heater that gives hot water within moments at one sink. Its low flow rate means it only suits a single faucet, not showers or whole homes.

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ASIN: B0CRJ3HZF6Model: POU 4TCategory: Water Heaters

Overview

Mounting this EcoSmart heater under a sink delivers hot water there without waiting for it to travel from a distant tank. It heats water only when the tap opens, and a thermostat holds the outlet temperature steady.

Owners eliminate the long wait for hot water at a far sink and stop wasting water while it warms. Flow is low, so it suits a hand sink, not a shower or several fixtures.

Who it's for

Remote bathrooms, wet bars and office hand sinks are the intended uses. Households wanting to replace a tank heater need a whole home unit.

Pros and cons

Pros
  • Hot water at the tap fast
  • Heats only on demand
  • Very small footprint
  • Light and easy to mount
Cons
  • Very low flow rate
  • Single sink use only
  • Warranty not listed

Performance notes

Output temperature depends on incoming water temperature and flow, since the element can add only so much heat at that wattage. Low flow helps it reach target temperature. Placing it right at the sink removes the wait for pipes to clear cold water.

Specifications

BrandEcoSmart
ModelPOU 4T
Dimensions & fit
Item Dimensions W X H11"W x 7"H
Item weight4 pounds
Capacity & performance
Capacity0.5 gallons
Flow Rate0.8 gpm
Maximum Temperature140 F
Wattage3500 watts
Heat Output140 °F
Power & efficiency
Voltage120 volts
Power Sourceac_dc
Construction & materials
Material TypeStainless Steel
ColorWhite
Compatibility & installation
Mount typeWall
Included components
Included ComponentsTankless Electric Water Heater
Unit Count1 Count
Other details
Maximum Pressure150 psi
Style NameIndoor Installation
Special FeaturesOn-Demand Hot Water, Energy-Efficient, Space-Saving Design

Frequently asked questions

Can the EcoSmart POU 4T run a shower?

It is designed for single sink, point of use or low-flow applications at 0.8 gpm, not showers.

What voltage does it need?

120 volts.

Where is it installed?

Directly at the point of use, wall mounted indoors.

How hot does it get?

Up to 140 F.