Step 1: Find and check the HVAC filters
We start by finding the filters that are part of the visit. Many homes have more than one, and they do not always take the same size or type. The question is not "which filter looks strongest?" but "which one is right for this system?"
We check the filters we can reach and replace the ones whose condition and maintenance schedule call for it, instead of swapping every filter because it is fall. The EPA recommends a MERV 13 filter, or the highest rating the system can handle (EPA). A filter that fits the slot is not automatically the right one, so if the specification is unclear, an HVAC professional should confirm it.
Doing it yourself? Follow the manufacturer's directions for shutting the system off and reaching the filter. Changing a filter is not a reason to open other panels or attempt repairs.












