This was a replacement for a 13 year old model in a system that used it to heat water so it had a variety of uses. These pumps should last a long time. My only complaint is that the cartridges for this and other taco pumps are almost entirely worth the pump itself. Therefore, replacing the entire pump is the only viable option since most plumbing stores do not stock cartridges. the circulation cartridge itself. Any rust that may be in the system is deposited on the insides of the inlet and outlet ports. So if rust deposits are present, the pump should still be replaced as this will block the flow.
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