Air Filter Schedule Calculator
Air Filter Schedule
Calculate your HVAC air filter replacement schedule and annual cost based on home conditions
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Formula
Replacement Days = Base Days x Pet Factor x Allergy Factor
Frequently Asked Questions
How often should I change my air filter?
Standard 1-inch filters should be changed every 30-60 days. Homes with pets or allergies should change filters more frequently.
Do thicker air filters last longer?
Yes, 4-inch and 5-inch media filters can last 6-12 months because they have more surface area to capture particles before becoming clogged.