Why Changing Your Air Filter Every 60–90 Days Is Crucial for Your A/C System

When it comes to your air conditioning system, one of the simplest and most important maintenance steps is regularly changing the air filter—every 60 to 90 days. Yet many homeowners forget or ignore this task, leading to major problems that affect comfort, efficiency, and even the lifespan of the system.

Why the Air Filter Matters

Your A/C filter traps dust, dirt, pollen, pet dander, and other airborne particles, preventing them from entering your HVAC system and being recirculated throughout your home. Over time, the filter becomes clogged and restricts airflow.

When airflow is restricted, several problems can occur:

Poor Cooling Performance – Your system can't push enough air through the home, making it feel warmer even when the A/C is running.

• Freezing Coils – Low airflow causes the evaporator coil to get too cold, leading to ice buildup on the coil and refrigerant lines.

• Increased Energy Usage – The system works harder and runs longer to try and reach the set temperature, leading to higher utility bills.

• System Damage – Prolonged restricted airflow can cause overheating and compressor failure—an expensive repair.

The Hidden Consequences: Dirty Coils

When filters are not changed regularly, dirt and dust can pass through and build up on the evaporator coil (inside your air handler) and condenser coil (outside unit). This buildup insulates the coils, reducing their ability to absorb and release heat.

If your coils are heavily clogged, your system may require deep chemical cleaning to restore performance. Professional HVAC technicians often use specialized cleaners like Alka-Brite Condenser Coil Cleaner, which helps break down grime and restore efficient heat transfer.

Look at the photos below: These show just how dirty evaporator and condenser coils can get when filters are neglected—and how effective proper cleaning can be.

Keep It Simple: Change the Filter

Changing your air filter every 60 to 90 days is one of the easiest and most affordable ways to:

• Maintain healthy airflow

• Reduce strain on your A/C

• Improve indoor air quality

• Extend your system’s life

• Avoid costly repairs or cleanings

If you have pets, allergies, or live in a dusty environment, you may need to change your filter even more frequently—every 30 days.

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Need Help? Contact HVAC Kings Today!

If your system isn’t cooling properly or you suspect dirty coils, we can help. Our team offers professional coil cleaning services and maintenance plans to keep your HVAC running smoothly year-round.

📞 Call us today at 866-945-5550🌐 Visit us at www.hvackingsllc.com