Intermittent Odor from Minisplit
Can anyone offer clues as to why my minisplit occasionally puts out an unpleasant odor? Or any steps I can take to figure it out?
Online searches suggest I might experience odors of dirty sock, chemical/vinegar, or fish/seafood. To me none of those is accurate (but if I *had* to choose, it would be dirty sock). I am unfamiliar with the smell of refrigerant–supposedly smells like ether? I am unfamiliar with that also, but I smelled some starter fluid to (maybe) get an idea and it does not smell like that. Basically all I can say is that it is an unpleasant but slightly sweet smell that is largely unlike any other smell I know.
I had the HVAC company out when it started, but the odor did not occur while they were here. It happens a few times a day for a few minutes at a time, so it would be hard to get them here when it occurs unless they stay for multiple hours.
Some reasons I am confident it is originating form the minisplit:
(1) When I smell it I put my nose in the minisplit’s airstream and it is by far strongest there.
(2) I put my nose at the air intake and smelled nothing.
(3) I do not smell the same thing outside (it is right above a window where I can sample the air).
(4) Also the filter is clean.
As I mentioned earlier, the “dirty sock” smell is the closest one of the usual odors even though I wouldn’t call it that. That is supposed to me indicative of mold, which makes some sense. The minisplit long had a problem with dripping condensation, although that has been fixed. It was probably also on at some point while builders were creating a lot of saw dust. However why would the smell come infrequently in short bursts of a few minutes? Furthermore I don’t seem to be having any respiratory issues, and I am the type who probably would if it were mold.
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