View Full Version : Wondering if I have a circulator pump problem

10-11-2009, 07:37 PM
How can you tell if a circulator pump is bad, on a gas forced hot water heating system?

Peter Griffin
10-11-2009, 10:09 PM
Hold onto the pipe directly above it with the thermostat calling and the boiler at temperature. If you say ouch the circulator is working.

10-12-2009, 05:34 AM
If the pipe is cool when the circulator is off and hot when it is running, then the pump is probably working, but even that is not a good indication tnat it is working PROPERLY.

10-12-2009, 07:03 AM
Most circulator pumps have very little head pressure and won't be able to push water if there's an air pocket somewhere higher up. You'd need to ensure you got all of the air out first.