When to Replace
HVAC Filter
Every 1-3 months
Clogged filters reduce efficiency and increase energy costs. Dirty filters circulate allergens.
Replace sooner if
- Visibly dirty or gray
- Increased energy bills
- More dust in home
- Reduced airflow from vents
Make it last
- Check monthly - hold up to light to see dirt
- Write change date on filter edge
- Higher MERV ratings need more frequent changes
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