This can be a tankless water heater with an integrated recirculation pump or a water heater and an external pump.
Water heater recirculation pump tankless.
Also the pump could work internally or externally.
These beneficial systems keep a steady supply of hot water ready for those moments when you need hot water immediately like a cold winter morning.
The new recirculation pump kit from rheem provides immediate hot water using the tankless water heater controls.
If you want to see an example you should check out the rheem rtgh unit which uses an integrated recirculation pump.
With the help of an integrated or external pump water travels from the tankless water heater to the hot water faucets throughout a home without the need to add additional water lines.
For proper water recirculation you ll need the following units.
Other models like the rinnai rl water heaters can be programmed to start an external pump during peak water usage times.
The following table compares a tankless water heater without a hot water circulation system column a to one with waterquick tankless column b.
Pump installs by water heater not under a sink in a bathroom or kitchen.
Uses water heater electrical outlet no new electrical outlets required.
The rheem rtgh is one of example of a unit with a built in recirculation pump.