Do Circulators Lose Their Circulating Ability With Age?

Docfletcher

What's the useful in service life? I have 2 Taco 007-F4 for the heating loops, both are 20 years old.

icesailor

Water well pumps loose efficiency with age. Heating circulator pumps will too I'm sure. The only time I ever saw it happen is when either the impellor broke off or something chewed the vanes off.

hot_rod

depends on the life they lead.
Properly sized and installed? Good fluid or water quality, no grit, rust, etc?
No oxygen ingress from non barrier radiant tube?
Adequate air removal device?

That is a hearty pump, could last another 20.

Without measuring the performance, or removing and doing a visual inspection, hard to say.

Docfletcher

Both Taco's as well as the 1 Grundfo's are whisper quiet for what that's worth. All 3 heating zone baseboards pipes are too hot to touch for more than a second, both at the entrance and exit's of the finned baseboard. That would suggest flow I think.

Bob Bona_4

The only wet rotor pumps like the 00s etc that I have seen "wear out" are either cast iron ones used for steam condensate heating (wrong application) or something like the 006 bronze used for aquabooster duty- the impellers can turn to powder. Otherwise they last decades without any apparent degradation-usually to the end of life of the boiler!

Docfletcher

Thanks all. It's all good info. So I guess I can save my dough at least for now.