Originally Posted by STREMON
Richard, thanks for the help! I am a little nervous to take off the heat strip and decided to hire a professional to do it. There is no way on ours to slither the control panel in to place. Like you said, we ordered the Bluetooth assembly to help with the noise issue of the fan always being on. Also, it will be nice to set a temperature and not guess with the dial. I have seen that some people have added soundproofing material to the inside of the of head unit to take down the noise level by a few decibels. Have you tried this as well?
I did swap out the black foam that came pre-installed on the inside of the ceiling assembly for something a little better, but to be honest I'm not sure there is enough surface area in the ceiling assembly to make that much difference in the noise.
The black foam from the factory is about 1/8" thick and has a rather rough surface which contacts the air flow. My thought was as much to increase air flow as it was to reduce noise, as the stuff I installed has a smooth surface on the side that contacts the air flow. It is designed for doing sound deadening on auto interiors, and is about 3/16" thick - only slightly thicker than the original stuff, but much more dense.
Here's to hoping that the reduced friction will increase air flow and reduce noise, and the thicker/denser sound insulation will help as well.
(original is the first photo, new is the second)