furnace banging noise
#1
10-22-00, 11:57 AM
#2
10-22-00, 09:49 PM
Olga:
I would phone a heating contractor to find out what that banging noise is.
If this is a hot water heating system, some pinging of finned copper tube radiators is typical. I presume if you heard a pinging noise you would have described it as pinging, not as banging. "Banging" should be investigated.
I would phone a heating contractor to find out what that banging noise is.
If this is a hot water heating system, some pinging of finned copper tube radiators is typical. I presume if you heard a pinging noise you would have described it as pinging, not as banging. "Banging" should be investigated.
#4
10-23-00, 12:13 PM
I would presume it is due to expansion of the ductwork, as it heats up, and the increase in air pressure within the duct. As the sheet metal expands, a portion of it is resisting until the pressure is too great, then it pops out, thus making the noise.
I suggest honing in on exactly where the sound is, then you can remedy the problem.
I suggest honing in on exactly where the sound is, then you can remedy the problem.
#6
10-23-00, 05:35 PM
bugeater and fjrachel,
Thanks for your comments. This is an old house (>125 years), and some of the duct work extends in the basement in an area that is difficult to get to to. (Plus it's really dark down there!) I think I can muster enough courage to check this out myself!
Is the t-stat on the furnace itself? How would I recognize it?
Thanks for your comments. This is an old house (>125 years), and some of the duct work extends in the basement in an area that is difficult to get to to. (Plus it's really dark down there!) I think I can muster enough courage to check this out myself!
Is the t-stat on the furnace itself? How would I recognize it?
#7
10-23-00, 07:29 PM
Olga, The T-stat is slang for thermostat... you may or may not have a fan switch on yours... you might have a honeywell fan limit switch, that may have a manual, auto fan knob on it..take a flash light, dont worry about spider webs, and just get down there...
#8
10-24-00, 08:41 AM
Thanks, Brandon, (especially about the T-stat part!...how silly...)
I went down to listen for the bang. It does sound to be coming from inside a duct very near the furnace itself. How can I tell which is the return duct? Do I need to disassemble it to remedy this? How difficult would this be?
I went down to listen for the bang. It does sound to be coming from inside a duct very near the furnace itself. How can I tell which is the return duct? Do I need to disassemble it to remedy this? How difficult would this be?
