Can a bad hot water recirculating pump slow or stop cold water flow? We woke up to a trickle of water flushing toilet, and only when we unplugged pump did it come back. Also, is it normal to wait about 8 minutes to get hot water out of the faucet once we unplugged pump? Trying to figure out where the problem lies-with the pump, with the hot water heater or with something else? Thanks for any help

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can a bad hot water recirculating pump slow or stop cold water flow?

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As you can see the recirculating system should only affect those fixtures that use hot water. There should be another branch supplying toilets. Hose bibs, sprinkler systems etc. Is there a check valve on the cold water supply? Let me know. Tom