
Rheem 3.5 kW 120V Non-Thermostatic Electric Water Heater
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Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Rheem RTEH3512 is a small point-of-use tankless electric water heater rated 3.5 kW at 120 volts. It heats water on demand for a single fixture, mainly handwashing and other fixed-flow uses, and switches on at flows as low as 0.25 GPM. It is non-thermostatic, so output follows the flow rather than a set temperature dial, and it runs on a standard 120V circuit rather than the 240V lines larger tankless units need. That makes it a fit for a single sink where a full tank or a bigger heater is overkill; it cannot serve a shower or a whole house.
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Lowest price we've seen: $249.58 on Nov 14 at The Home Depot. Tracked across 1 store since Nov 14.
This is the Rheem RTEH3512, a 3.5 kW, 120-volt non-thermostatic tankless electric water heater. It is a point-of-use unit that provides continuous, on-demand hot water.
It is designed for handwashing and other fixed flow applications. The heater turns on at a low flow of 0.25 GPM.






