ReplyI am not suppose to answer your question since I am still waiting for my *. But, because my username is half of yours, just check all the screws on the outdoor unit, loose a little bit, tight again, you may find this will help.
Regular Guest
hello. i live in a one story brick house. several months ago i replaced an old hvac system with a carrier system ( air conditioning unit 24acc636) and heat pump also.
the ac unit is outside my house about 3-4 feet from two bedrooms. since the installation whenever the unit is running there is a vibration in the walls of the bedrooms and also a noise loud enough to disturb sleep in both rooms.
the unit is on a plastic pad of some kind.
my old (30 year old unit) was very quiet and on a cement pad)
the company that put the unit in is not being responsive and says the unit is "working normally."
can a faulty part etc be causing the probleml? what would it likely be? can the hollow pad be reposnsible?
what can be done to lessen the noise and vibration other than replacing the unit assuming the problem is not a faulty part or functioning of the unit?
thanks so much for any comments.
Professional Member*
I am not suppose to answer your question since I am still waiting for my *. But, because my username is half of yours, just check all the screws on the outdoor unit, loose a little bit, tight again, you may find this will help.
Professional Member*
I got my *. They did not notice me.
Regular Guest
dear vibration thanks for the post. have checked as you advised. no luck yet.
Member
The problem sounds like an issue with the installing company. Continue to pester them untill the issue is resolved. If the install was done by a licensed and insured contractor, you have lots of rights. Learn these rights and use until the problem is fixed to your satisfaction.
Regular Guest
hello and thanks for the info and encouragement. are my rights in this case, as you mention, writen down anywhere?
Professional Member*
Is the plastic pad connected to the house at all. Or more specifically is the unit connected to the house at all except for the copper lines going up the wall into the attic?
Professional Member*
it could be the copper lines touching a wood stud in the wall .
Member
the answer is yes. Contact the Registar of contractors in your state and find out the rights and responsiblities that you have.Originally Posted by noiseandvibration
That being said, I would certainly hope that you can work with the original contractor and that they will correct the problem.
New Guest
There are consumer protection laws in every state. Check with your Attorney General's office. Something it touch the walls creating the noise vibration. The unit should be level and on a pad, which it is on a plastic pad. Or the unit or refrigerant line are moving too much and need secured.
Regular Guest
thanks for the info and suggestions. will followup!
Regular Guest
thanks to everyone for their responses. here is a followup --
the company that installed the carrier unit, replaced the compressor. that fortunately seems to have stopped the vibrations in the wall of the house and the unit is now operating with lesser noise buy about 30 percent. this has made sleeping in the effected bedrooms soewhat more possible. however, the noise from the unit, which is about 20-25 feet from our screened porch is still a big problem. what was once a nice quiet and replacing place in the summer, is no longer sue to the continued noise from the carrier unit when it is operating. any suggestions, other than moving the whole unit further from the house, for using noise insulation material to absorb the sound?
Professional Member
On your outside unit, check for metal panels, and coil guards that may
be vibrating against each other. This happens on Carrier units
quite often. Installing pieces of rubber between them will quiten
things up some.
Regular Guest
Consumer protection??? Come on be realistic..
First of all based on this:
http://www.residential.carrier.com/p...mparison.shtml
You got the loudest unit in the group, plus no compressor sound blanket, etc.
If quiet was critical, one needs to factor in and be willing to pay more.
Maybe the one replaced was a higher end (i.e. less noisy unit).
Find someone with a sound meter and prove its over 72 db, then see legal remedies if they don't replace it. The only "performance quarantee" you have is 72 db.
Regular Guest
thanks for this info! i will followup and try to determine the actual decibel level and also let the installer who sold me the unit know he did not comply with our request for the quietest unit - which we were willing to pay for.
Professional Member*
did they put isolation pads under the unit? if not ask them to do so and see if that makes a differance
also check the lineset making sure it isnt agaist the wall vibrating
Regular Guest
You said" "and also let the installer who sold me the unit know he did not comply with our request for the quietest unit - which we were willing to pay for."
You should absolutely follow this path. If you can get the salesman/installer to admit that you made this request and that they failed to honor by selling you a lower end unit, then if they are reputable they should be willing to replace unit with a higher model and only charge you for the increased sytem cost. You shouldn't have to pay labor for their mistake.
Regular Guest
thanks to all for your comments. met with the installer again. as i reported earlier we now have a new compressor which is quiter thatn the last but still noisey. the installer is now going to try a "sleeve" around the compressor which he says will help dampen the nosie. stay tuned!
AOP Committee/Professional Member*
Chances are excellent that your old unit had a reciprocating compressor, which is the type of hermetic compressor used for decades in AC and refrigeration.
Often, newer units have a scroll compressor, which starts with a trumpet-like buzz that subsides somewhat as the unit starts to settle in to its run. Yes, that is a normal sound.
Your installer MAY get you some relief, but you need to find out what happened to your request for a quiet unit.
[Avatar photo from a Florida training accident. Everyone walked away.]
2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
AOP Forum Rules:
Regular Guest
hello and thanks again to responders.
we have made some progress. the installer first responded by placing a noise suppression sleeve on the compressor. it helped some. they have now added a second sleeve over the compressor unit that is thicker than the first and the noise is now tolerable. the unit is not as quiet as our old one but we can live with it. it seems the new hvac technologies are more efficient but nosier!
anyone know of any problems that might stem from these covers on the compressor?
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