A short single-speaker YouTube clip (by Derek Cole) giving HVAC maintenance advice: if filters remain clean across multiple inspections, this likely indicates either an inappropriate/ineffective filter type or that conditioned air is bypassing the filter/unit via alternate paths — both requiring inspection and corrective action.
You look at the filter, you're like, oh, it's clean. And then 30 days later, you look at the filter, oh, it's still clean. Okay. After about two or three of those, you're like, wait a minute. There is a bigger problem because the filter is not getting dirty. So either we need to change the type of filter, or we're having a problem where the air is not even getting to the filter or the unit because it's going through other paths to get there, which is also a problem.
How to Prevent Mold and Odor in Your Air Conditioning System with UV Light #shorts
