tankless heater
On-demand water heating
A tankless heater is a water heater that heats water on demand rather than storing hot water in a reservoir.
When you turn on a faucet, water flows through the unit and is heated instantly by gas or electricity.
Also called an on-demand or instantaneous water heater.
Tankless units save energy by eliminating standby heat loss but may struggle to supply multiple fixtures simultaneously.
- instantBriefest unit of time
- hot waterHeated liquid, or trouble
- on-demandAvailable upon request
- propaneFlammable hydrocarbon fuel
- natural gasSubterranean hydrocarbon fuel
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