tankless water heater

On-demand hot water

A tankless water heater heats water on demand rather than storing hot water in a reservoir.

When you turn on a faucet, cold water flows through the unit and is heated instantly by gas or electricity.

Also called an on-demand or instantaneous water heater.

We switched to a tankless water heater to save space and energy.

Related

whole house · electric · pilot light · flow rate · GPM · plumbing · copper pipes · condensing · venting · wall-mounted · efficiency · energy savings · endless · temperature · shower · faucet · utility bill · compact

Opposites
water heating storage method

tankless water heaterhot water tank

Insulated vessel storing heated supply

boiler · immersion heater

Family

tank, tanks, tanked, tanking, tanker, tankers, less, water, waters

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G