//Glossary
Hot water recirculation
A pump and return line (or a crossover valve) that keeps hot water moving through the pipes so it arrives at the tap quickly instead of after a long wait. Common in larger homes and in commercial buildings.
Does recirculation affect a water heater choice?
Yes. A recirculation loop changes how a tankless unit is sized and controlled, and a pump that runs constantly can shorten equipment life. Tell the installer if the house has one, or if the wait for hot water is the reason you are calling.
Guides that use this term
- › Tankless water heaters, explained: how they work and what the install involves
- › Navien tankless water heaters: what to know before you choose one
- › Restaurant plumbing: grease, the line to the interceptor, and hot water that cannot stop
- › Multi-unit and property management plumbing: shared lines, shared water heaters, one phone call
- › Navien vs Noritz vs Rinnai: choosing between the three tankless brands Done-Rite installs
- › Residential vs commercial plumbing service: what changes when the customer is a business
Related terms
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