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FAQ - What size pump should I use on my recirculation system?

A pump should be sized to overcome the head losses of the water heater and frictional piping losses. It is recommended that the pump be sized to provide 2 gpm of flow based on 10 feet of head loss plus additional losses. Aquastat and/or timer should be used to maintain warranty of product. Please also refer to Plumbing applications in the installation manual located at

Below are some pump manufacturer's who can properly assist you with sizing your pump:

Grundfos – 913-227-3400
Taco – 401-942-8000
Bell & Gosset – 847-966-3700

Applicable Models
  • Models: ALL MODELS
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