Originally Posted by troyorr
Its a good Life!
ahem Beenthere...it's undersized.
2 ton unit with 8" to LR and a trunk to back bedroom 8" and 3 off shoots 6".
All in all...my main noise complaint is the immediate right turn form the attic plenum
of duct right to my living room box 12x6.
Have you guys ever heard of running an elbow off the plenum in the other direction and then
run a ways "back" to the area supply vent?
Would that not decrease sound? In other words...run a long flex duct in a circle to decrease noise.
Now this is novel.. I bet it has some merit.
I have solved noise problems in museums, libraries, casinos, music studios and have not needed a db meter in over 22 years. A db meter will not give the tech any information as to the how or why there is a noise problem. Nice, maybe. Necessary, no. Noise issues are a failure in design, installation, or equipment. How much noise is acceptable varies and the amount of noise is usually proportional to the budget of the client, and residential is usually low budget. Let the company do their job and stop nit picking about how they should do it.
Your 2 ton A/C is NOT undersized.
Your ducts are not oversized for 2 tons.
Your registers are not sized for 2 tons.
Your distribution system is too small.
You have duct for about 1.5 tons, and registers for about 1 ton.
I know that Beenthere, but the guy keeps telling me my ducts are ok sized.
Yes beenthere...the air forced out seems a bit hurricaine. Noisy tho.
When I meet with him...he will not want me to change out my duct work.
He kinda relayed that to me already.
Of course not, he doesn't want to do it for free.
Not exactly. I offered up the replacement of the duct work.
Maybe 8" duct is ok for a 2 ton ac.
Except that damn short run 8" from the attic plenum to my living room duct.
Damn...that is such a short run an elbow. I can almost reach down the metal box to the plenum.
How about I have them keep all my ductwork as it is, but do something about that elbow to the plenum.
Like...put an elbow going the opposite direction and use 10 feet of flex duct to mosey on back to my living room duct box. To lenghten that previous "short" run from plenum to my LR.
That is what I am going to propose.
Caslon, if you knew all of this before you posted how does a db meter help solve the problem?
Might help, might not.
Might restrict air flow enough to cause freeze ups.
[QUOTE=caslon;1936474] Don't any of you lug heads ever troubleshoot noise?
Thats a great way to address folks who are helping you for FREE...
How tall are you Private???!!!!
My point, that completely allude caslon, is that with a decibel meter I can usually prove positive that there is no problem with the sound level of an HVAC system even though there is clearly a problem that just does not equate to the decibel level. I have no further need to continue attempting to aid a person who is so arrogant and disrespectful of others. I do however wish caslon good luck with his problem. With such a defeatist attitude, luck is surely going to be needed.
We have customers that must be related to bats for hearing noises to complain about. So for us a db meter really won't help because they only here the noise when he's in bed alone and she is in the bathroom over the bidet.
As for as what tools the install manger shows up with; as a home owner I won't care if he used a Ougi board and a Voo Doo doll as long as the problem is corrected.