Why the 90-day air filter rule doesn’t work in Arizona
- The 90-day air filter rule printed on most packaging is a national average that does not fit Arizona homes, HVAC technicians who service the Valley say.
- Desert dust, year-round air conditioning, and monsoon dust storms load filters far faster, so the recommendation here is a new filter every 30 days.
- A clogged filter makes the system work harder, raising electric bills and risking frozen coils or breakdowns, so the fix is cheap compared with the repair.
Reported by
AZ Big Media
azbigmedia.com
Maricopa County, AZ