How to install a rheem electric tankless water heater

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Enjoy the comfort and convenience of continuous hot water on demand with a Rheem® tankless water heater. Our whole-home gas and electric models are great for homes with busy families, homes with luxury bathrooms and vacation homes, while our point-of-use electric models are ideal for a single faucet or shower.

Ready to size a Rheem tankless electric water heater for your home? Click here to use our quick tankless electric sizing tool, and you’ll have the right tankless water heater for your family in no time.

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How to install a rheem electric tankless water heater

Can I install an electric tankless water heater myself?

As a homeowner you are usually allowed to install a water heater yourself. However, in most states you must still pull a permit to have it inspected for safety. This also goes for replacing an old water heater.

What size wire do I need for an electric tankless water heater?

Run Power for the Unit You must utilize either a 120- or 240-volt circuit, wholly devoted to the heater. Both voltages require 8-gauge wire, and the section exposed to the area under the sink must be armored cable.

What size wire do I need for Rheem tankless water heater?

Rheem PROTECH 18 AWG Thermostat Wire for Tankless Water Heaters RTG20009-1 - The Home Depot.

Where should a tankless electric water heater be installed?

As long as enough combustion air is provided, tankless water heaters can be installed in place of your old water heater or anywhere in your home. This includes utility rooms, garages, basements, attics, or mounted on outside walls. They can even be installed in locations where a storage water heater wouldn't fit.