A circulator pump or circulating pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit. They are commonly found circulating water in a hydronic heating or cooling system.

What does a circulating pump do?

A home water re-circulating pump is used to circulate domestic hot water so that any faucet or shower will provide hot water instantly upon demand. These systems slowly pump hot water through your hot water pipes and back to the water heater through either a dedicated line or through the cold water line.

Is a circulation pump necessary?

The Magic of Water Circulating Pumps

To make things even better, you can even add a timer to your circulator! You can set the timer to activate the system so that you can have hot water at the ready when you know you're going to need it.