If you’re wondering how often to change HVAC filter, you’re not alone. Most homeowners forget this small but crucial task—until their system starts acting up or their energy bills spike. Regular air filter replacement is key to a healthier home, lower utility costs, and a longer lifespan for your HVAC system.
How Often to Change HVAC Filter
Every HVAC system depends on a clean filter to perform efficiently. As the filter captures dust, pet dander, and airborne particles, it gets clogged—making your system work harder.
General Filter Change Guide:
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No pets, no allergies: every 90 days
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One pet: every 60 days
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Multiple pets or allergies: every 30 days
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Commercial or heavy use: every 20–45 days
Tip: Always check the filter’s packaging for specific instructions.
Not sure when to replace your HVAC filter? Contact Qualitech Heating & Cooling today
Types of HVAC Filters & When to Replace
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Fiberglass filters – every 30 days
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Pleated filters – every 60–90 days
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HEPA filters – every 6–12 months
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Washable filters – clean monthly, replace as needed
Ignoring HVAC filter replacement can lead to:
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Poor airflow
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Higher energy bills
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Bad indoor air quality
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Damage to your HVAC system
Signs It’s Time to Replace Your Air Filter
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Dust buildup around vents
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Allergy symptoms indoors
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Strange HVAC noises
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System running longer than usual
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Dirty-looking filter
🚨 Need Help Troubleshooting? Call Qualitech
A simple reset can’t fix everything. If your HVAC system keeps shutting down or still won’t start, there could be deeper issues. At Qualitech Heating & Cooling, we specialize in:
- ✅ HVAC diagnostics & repair
- ✅ Thermostat replacements
- ✅ Emergency HVAC services in Philadelphia & Huntingdon Valley
Don’t stress—we’re one call away from getting your system back on track.
FAQs
Q: How often should I change HVAC filter in summer?
Every 30–60 days, especially with pets or daily AC use.
Q: Can I run my HVAC without a filter?
No. It can damage the system and reduce air quality.
Q: What if I forget to replace my filter?
Expect high energy bills, poor airflow, and more wear on your system.