Derek Cole explains why HVAC systems smell musty: condensation collects in the drain pan, and if the line clogs, stagnant water breeds mold. UV light installed in the system kills the growth and stops the odor.
So the byproduct of that is water. So that's why you have drain lines, that's why you see water dripping outside. So what'll happen is when you have that hot air going across that cold coil, you get condensation and that's going to drip down to the drain pan. Well, if that drain pan is not draining or something is the matter, things will start growing in that drain pan because you have cold water sitting in a damp, dark spot. So the thing that happens is growth, right? There's like all kinds of mold. So we don't call it mold, call it growth. So you start getting— the first time you turn on your heat or your air conditioning, especially, you get that kind of damp, musty, moldy kind of smell. So the way to prevent that from happening is to introduce UV into that system somehow.
How to Prevent Mold and Odor in Your Air Conditioning System with UV Light #shorts
