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Old 02-09-2013, 11:05 AM   #16
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Customer hates noisy new furnace


Next time offer the sealed combustion model at the higher cost, and explain they are quieter. If they refuse, the noise is no longer your problem.

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Old 02-09-2013, 01:13 PM   #17
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Customer hates noisy new furnace


Thanks. It's an option and good communication is important.
Like I said earlier, it's only about 10% that complain about the noise. I have to laugh over this customers complaint because her house is located directly under the flight path of landing jet aircraft and I heard everyone flying overhead while installing the furnace. I bet after many years of that, the customer no longer hears it. The same will be true with the new furnace I bet.
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Old 02-09-2013, 01:17 PM   #18
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Customer hates noisy new furnace


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Originally Posted by concretemasonry
Just because everything is tight does not make it good. Vibration and harmonics can get complicated and frustrating. Often, it can cause noises and in some cases some isolation can reduce the noise from everything attached to the furnace unless you want do do ductwork modifications. I had a rock solid professional furnace installation and discovered the noise were from the ductwork vibrations of the ducts. - I eliminated much of the noise with a bungee cord tight around a major duct and tied it up to a joist to change the harmonics and the cord was a spare and was uded in my utility room.

Dick
If I had installed a canvas connector between the furnace and upper plenum would that have eliminated any possible harmonics with the ductwork? I'm betting it would. Just another expense to add to the job that other bidding contractors wouldn't factor in.
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Old 02-09-2013, 01:41 PM   #19
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Customer hates noisy new furnace


A mat on the floor under the furnace will reduce the noise transmission thru the floor!!!!!!!!
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Old 02-09-2013, 01:45 PM   #20
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Customer hates noisy new furnace


Cannot sit on anything combustible.

Even a high efficiency furnace you can hear those jet burners. I can hear mine and the sound travels thru the ductwork. Unless I insulated the bonnet and 3 feet of horz duct you can still hear them in a quiet house. The nature of the beast. The mod or 3 stage units are a lot quieter but at a premium cost. She will have to get used to it. Even the BBB won't help her on that one.
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Old 02-09-2013, 04:15 PM   #21
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Customer hates noisy new furnace


Quote:
Originally Posted by kirwinjd View Post
Thanks. It's an option and good communication is important.
Like I said earlier, it's only about 10% that complain about the noise. I have to laugh over this customers complaint because her house is located directly under the flight path of landing jet aircraft and I heard everyone flying overhead while installing the furnace. I bet after many years of that, the customer no longer hears it. The same will be true with the new furnace I bet.
Funny you mention the aircraft. I have a customer right next to a landing strip at the Wpg Airport (Ferry Rd). You can read the Michelin on the tires when they come in over his house.

Says the Fed Ex jets at 1-2 AM in the morning are the worst as they vibrate him out of bed when they takeoff fully loaded. 24 hr cargo flights are the way of life now. B4 the cargo planes the domestic flights stopped at midnite and he could get some sleep.
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Last edited by yuri; 02-09-2013 at 04:17 PM.
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Old 02-09-2013, 06:29 PM   #22
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Customer hates noisy new furnace


I'm not a pro but...the pro's that installed my Goodman 80% left the catalytic converter screens in despite the fact that this was a propane install. The unit was ridiculously loud and i have a high tolerance level, and the unit was in the basement. Thankfully they left the installation manual which explicitly states that the screens MUST be removed if it is to burn propane. So, I took care of that myself a month later. It cut the noise level by 75%.

Three months later my brother gets one installed by the same dealer....and they fought him tooth an nail on spending the 20 minutes to remove the screens...even though he had the manual right there and showed them...the manual says that you can crack the exchanger leaving the screens in after a propane conversion.....they cared not.
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Old 02-09-2013, 06:47 PM   #23
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Customer hates noisy new furnace


Yeah Yuri
The amount of times I'm on sea island at Vancouver airport, when a jet over the chimney makes it sound like the furnace I'm half inside has come on. It's a real test for sphincter control.

Last edited by how; 02-09-2013 at 07:08 PM.
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Old 02-09-2013, 08:33 PM   #24
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Customer hates noisy new furnace


Remember the scene in the Blues Brothers where Jake lies down on Elwood's bed and says how often does the train pass by? So often you don't even know it. It was right out the window as the sleazy hotel was on the elevated train tracks. Hilarious.

Same thing with the airport noise for some people. I guess you get used to it. I lucked out and built my house on the far end of the city not even close to any flight paths and hear a plane once a month and that is only if he has to circle for bad weather or wait for a open runway. Like winnng the lottery IMO, plus none of my neighbors having barking dogs. For once I did not get the short end of the stick.
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Old 02-10-2013, 01:35 AM   #25
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Customer hates noisy new furnace


They make all kinds of sound absorbing stuff. It's a different field. Refer the customer to an appropriate sound absorbing stuff contractor if you run out of options.
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Old 02-10-2013, 02:52 AM   #26
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Customer hates noisy new furnace


[QUOTE=yuri;1113262]"Cannot sit on anything combustible."

Does this include sealed combustion model?????????
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Old 02-10-2013, 07:08 AM   #27
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Customer hates noisy new furnace


yes - gas code. we put sheet metal on a wood floor or get the factory metal non combustible base.
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Old 02-10-2013, 07:45 AM   #28
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Customer hates noisy new furnace


Quote:
Originally Posted by Dorado View Post
They make all kinds of sound absorbing stuff. It's a different field.
Refer the customer to an appropriate sound absorbing stuff contractor if you run out of options.
Is that the technical term to ask for?
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Old 02-10-2013, 07:50 AM   #29
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Customer hates noisy new furnace


Sound attenuating material/products.
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Old 02-12-2013, 11:34 PM   #30
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Customer hates noisy new furnace


Thanks all for the advice. I stopped by and checked the source of her complaint. It's the increased air flow through the ducts that's she's moaning about. Even though the furnace is sized correctly for the house and I set the blower on the slowest speed, the air flow is still much stronger than her 45 year old furnace. Even a sealed combustion furnace won't cure the air flow noise. Final resolution I think is to sell her on removing the old hard pipe ducting and put in resized flex ducting with manually adjustable dampers. Maybe add another supply run or two to help reduce the static pressure. Goodman says that reducing blower to the minimum speed makes it a two ton blower but I hardly see the difference. Still blows harder than the old 2 ton 80k gaffers and sattler.

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