Forum Discussion
fncampn
Oct 03, 2018Explorer
Dutch_12078 wrote:
The majority of the sound from our two furnaces comes from the large cold air returns. I lined the area behind the grills with a sound absorbent material, and even blocked off a section of the over sized grill with the same material, being careful to still exceed the manufacturer's required minimum opening area and minimize restricting air flow. The sound level reductions were significant, although I didn't take any before/after measurements.
Instructions for the mod Dutch made can be found here: Soundproofing a noisy furnace
About DIY Maintenance
RV projects you can tackle on your own with a few friendly pointers.4,351 PostsLatest Activity: Jan 18, 2025