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Noisy Lennox furnace

Posted by Jeff Wiseman on February 6th, 2003 09:27 PM
In reply to Lennox Furnace Problem by Dan B on December 1st, 1997 07:59 PM [Go to top of thread]

We have just bought a home with a Lennox Pulse furnace, High-efficiency, installed in 1986. (Model # G14Q3-80-C3, if that helps anyone.) This may go without saying (i.e. this is our first home and I don't know what's obvious and what isn't), but it uses natural gas and is a forced air furnace.

What a noise it makes!

When it first switches on, there is a click and a low rumble, but then there is another click after about ten seconds and his immense racket comes out of it for about a minute. Then the racket stops and the air continues to blow. When you take the front panel off, there is the main box (about 8-3/4" x 17"), then a 7" tall, 3" diameter cylinder just to the right, and the racket seems to be centered on that cylinder.

I have tried touching all visible nuts to see if anything is loose, but they are fine. It has been a few months now, and the sound is unchanged, so I don't think that anything is coming progressively loose. We received one opinion stating that it's normal! I hope not! Can anyone comment?



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  • pulse by andy  2/9/03 09:33 PM

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