Why might I need a recirculation pump installed with my new water heater?

For safety, new water heaters are engineered to prevent gravity or thermal expansion characteristics of water from moving water through recirculating lines.


Older re-circulation systems without a re-circulation pump are designed to function based on the gravity or thermal characteristics of hot water.

New water heaters have federally mandated Heat Trap Nipples that prevent the gravity or thermal expansion characteristics from moving water through the recirculating lines as they had previously.  To correct this issue a licensed plumber can install an appropriate re-circulation pump. The technician can discuss all options with you while on-site.