I recently had my heater/ac unit replaced, and it seems noisier than the old
unit. Our old house has no subfloor, which I know is part of the problem, in
addition to it being located under our dining room. I would like to quiet
things down a bit and thought of cutting either ceiling tiles or thicker
sheetrock to size and shove up into the joists. A traditional ceiling is not
possible; too many things in the way.
Which might be better? Anyone have experience with this? Any other
This is Turtle.
Are you talking about air noise or noise from equipment running.
If it is air noise. increase the return size and line return line with
If it is equipment noise get you some shock pads from the HVAC warehouse to
set the furnace on to cut down on vibration. Get you 4 -- 1' X 1' X 1" pades
and put furnace on them. Every hvac warehouse has them and the installer can
get them real eazy. They also come in 4" X 4" X 1" pade which will do just
This is a common complaint when the installers and or salemen do NOT do a
manual D duct sizing calculation when selling you a new unit.
If you have air noise, this would be reason #1..what so many overlook is
that the duct system is part of the HVAC system, just as important as the
actual mechanical parts themselves.
If you have operation noise, it could be due to any one of a number of
reasons, but the most common is bad mounting procedures.
Turtle states the correct parts to fix the problem if its more of a
vibration issue...of course, in all honesty, not being able to hear your
issue is part of our problem and we cant give you a one size fits all
Turtle & CB has explained your situation and how to fix.
So, I will type no further.
( kjpro @ starband . net ) remove spaces to e-mail
Want it done yesterday? Or done right today, to save money tomorrow!!
A better option would be to use some vinyl nitrate closed cell noise
control foam. You'll be much happier with the reduction of noise. You
can read about it at...
Super Soundproofing Co.
757 N. Twin Oaks Valley Rd.
San Marcos, CA 92069
Technical Assistance 1-760-752-3030 Order Desk 1-888-942-7723
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