Time to put a mic in various places and compare the sounds afterwards. Say a
night each at each piece of equipment. Keep the record levels constant. Your
computer would likely do the job well plus record the events for
It's not the fridge.
There's at least 2 thump/clunk sources.
One sounds to be in the vents, often audible 20-60 sec's after gas valve
opens, burners fire.
The other sounds like it could be in the kitchen floor-boards/rafters.
I could likely id the vent-clunk. Dunno what to do about the other.
On Fri, 01 Jan 2010 11:23:16 -0600, Willie The Wimp wrote:
Is that second one related to furnace timing, too? The (plastic pipe)
exhaust vent for our furnace always 'thumps' a little while after the
furnace shuts off and the pipe cools and contracts.
Also maybe condensate drain pump, if you have one...
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