How Often Should You Replace Your HVAC Filter?

The Importance of HVAC Filters

Your HVAC filter is your first line of defense against dust, allergens, and pollutants. A clogged filter forces your system to work harder, increasing energy bills and wear on components.

General Guidelines

• Standard 1-inch filters: Replace every 1-3 months
• High-efficiency filters (MERV 11-13): Every 2-3 months
• HEPA filters: Check monthly, replace as needed (3-12 months)

Factors That Affect Replacement Frequency

Replace More Often If You Have:

• Pets in the home
• Family members with allergies or asthma
• Someone who smokes indoors
• Ongoing construction or renovations
• High pollen season

You Might Replace Less Often If:

• No pets
• Rarely home
• Live in area with clean outdoor air

Signs Your Filter Needs Replacing

1. Visible dirt or dust accumulation 2. Reduced airflow from vents 3. Increased dust in your home 4. Higher than usual energy bills 5. System running longer cycles

The Cost of Not Replacing Filters

• 20% higher energy bills from reduced efficiency
• Frozen evaporator coils from restricted airflow
• Premature system failure from overworking
• Poor indoor air quality affecting health

Pro Tips

• Set a phone reminder for filter checks
• Buy filters in bulk to save money
• Write the install date on the filter frame
• Check your filter monthly even if you don't replace it

Need Help?

Not sure which filter is right for your system? Our technicians can recommend the best option during your next maintenance visit.