Coleman Presidential II furnace - rust and musty odor

[eej03]

I own a manufactured home that was built in 1980 and has a (presumably original) Coleman Presidential II furnace. In cleaning my floor vents, I spotted a significant amount of rust under the furnace (see attached photos) and a musty odor in the vents. I have had issues with water in the floor vents near the furnace before and had to have the drain line fixed and suspect the water came from the A-coil.

I plan to take a look at the A-coil this weekend and post pictures. Is the rust a cause for concern?

Are musty odors typically just permeating from the dirt crawl space below? Is the best way to address the odor with crawl space encapsulation?

Thanks!

[Robert]

Hi,

The rust should not be a problem unless it increases. If you have openings to underneath, then you will smell the mustiness from below.


Be sure underbelly is sealed and ducts are sealed and lay a 6 mil plastic moisture barrier on the ground under the home.



Thanks,
Robert