Hot water recirculation-Domestic water supply

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To determine the flow rate of a hot water recirculation pump for a domestic water supply, measuring the flow rate is the most accurate method. If selecting a new pump, understanding the specific requirements of the system is crucial. Users discussed brands like Grundfos and Taco as potential options for pumps. It’s important to consider factors such as pipe size and distance from the water heater when estimating flow rates. Ultimately, precise measurement or manufacturer specifications will guide the selection process effectively.
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could anyone explain how to determine the flow rate of the hot water recirculation pump for water heater in domestic water supply?
 
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Do you know the model of the pump?
 
There are several ways to estimate it. The only way to know it is to measure it.
 
Are you trying to check on an existing pump or choose a flow rate in order to select a pump?
 
i want to select the pump (grundfos/Taco)
 

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