Heat Pump "Dirty Sock Syndrome"?? (paint, smell, cleaning)

[ogrbny]

We are in North Florida & have a heat pump.
We recently had the coils & drainpipe cleaned. Then we smelled an awful musty funky smell mostly when running the ac.
We have researched online & have found that "dirty sock syndrome" seems to best describe our problem.
(though it really doesn't smell like dirty socks - more like a chalky plaster/paint musty smell - but I guess we could imagine that...)
Question for anyone who has or has had this problem - HOW TO REMEDY???
The options we saw online were some sort of chemical spray that coats the coils, or ultraviolet light...
Hopefully some of you have had & fixed this successfully and can help us out!
Thank you!

[K'ledgeBldr]

Unfortunely, every situation is unique. Depending on climate (though somewhat limited to the regions that have HP's), life style, energy efficiency (more about air leakage), properly sized unit(s), etc.

The only solution that I'm aware of is a coating (when all other variables have been eliminated). It's an anti-bacterial coating done in a dip process ( there are other "DIY" solutions). UV is not as effective because there are areas of a coil that wouldn't see the UV light- so there are still those areas for bacteria to grow.

Bronz-Glow* -* DIY Products
...and they're in FL.

As for this showing up after your cleaning- I think there was an abundance of residual moisture left in the evaporator housing that sat at a ideal temperature to spawn a bacterial growth.

[ogrbny]

Thank you for the link!
I'm scared to find out the cost... !!!
You wouldn't happen to know, would you?