Maintenance · 4 min read
How Often Should You Replace Your HVAC Filter in Georgia? (Honest Answer)
Georgia pollen, humidity, and pets all shorten HVAC filter life. Here's the real replacement schedule by filter type — from a Woodstock, GA HVAC company.
The "change your filter every 90 days" sticker is generic national advice. Georgia is not generic. Between February pollen, August humidity, and the dust that comes off our red-clay yards, here's what actually works in metro Atlanta homes.
By filter type
- 1-inch fiberglass filter: every 30 days
- 1-inch pleated MERV 8: every 60 days
- 1-inch pleated MERV 11+: every 45–60 days (yes, sooner — higher MERV clogs faster)
- 4-inch / 5-inch media filter: every 6–9 months
- Washable electrostatic: rinse every 30 days, replace every 5–7 years
When to shorten the interval
- Pets in the home → cut the interval in half
- Anyone with asthma or allergies → MERV 11+ and check monthly
- Recent construction or renovation → check weekly until clean
- February–April pollen season in Georgia → check monthly
What a clogged filter actually does
It's not just dirty air. A clogged filter starves the blower, drops static pressure, freezes the evaporator coil in summer, and burns out blower motors in winter. The #1 "AC not cooling" call we run during a Georgia July traces back to a filter nobody changed since Christmas.
Pro tip: write the date on the filter
Sharpie the install date directly on the cardboard frame. It saves you the "wait, did I change this in March or April?" debate every time you walk past the closet.
Need a maintenance plan that handles this for you? We do bi-annual tune-ups across Cherokee and Cobb counties. Call (770) 363-8489.
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