AC Filter Replacement in Greater Los Angeles

air filter
air filter

Cleaner Filters. Better Airflow. Lower Bills.

In Southern California, HVAC filters face more than just dust. Our region’s warm climate, dry conditions, and outdoor air pollutants—from pollen to wildfire smoke—can clog your air filter fast. When that happens, airflow slows and your system works overtime, which can mean higher power bills.

Regular filter replacement is one of the easiest, most affordable ways to maintain comfort and extend the life of your equipment.

AC Filter replacements in Pasadena, CA

How Often Should I Replace My AC Filter?

Most AC filters should be replaced every 30 to 90 days. If you have pets or allergies, monthly changes are often needed. Neglecting to change your filters can lead to frozen coils, poor cooling, expensive repairs, and higher electricity bills!

Check your filter monthly. If it looks gray and dusty, it’s time for a change.

Choosing the Right AC Filter

Most homes use filters sized 16×20, 20×20, or 20×25—but the material matters just as much as the size. Here’s a breakdown of common filter types:

  • Fiberglass: Inexpensive, but low filtration performance. Best for temporary use.
  • Pleated: Cotton or polyester with improved dust-trapping ability. Most common for residential use.
  • Electrostatic: Generates static to attract particles. Available in disposable or washable forms.
  • Washable: Reusable, but must be cleaned regularly to stay effective.
  • HEPA: High-efficiency particulate air filters. Removes 99.97% of airborne particles. Not compatible with all systems.
  • Media: Thicker pleated filters. They trap more particles than standard filters and last up to 6–12 months. Ideal for improving indoor air quality without restricting airflow.

Not sure what type of filter you need? We can help. We’ll match the right filter to your system and your indoor air quality needs.

How can I make my AC more effective?

In addition to filter changes, your system may benefit from:

Filter Changes Are Built Into Our Maintenance Plans

When you schedule a maintenance plan with Air-Tro, filter replacement is built in. Our plans also include:

  • Priority service scheduling
  • Full system inspections
  • Seasonal performance tune-ups
  • We’ll also evaluate your system and recommend upgrades based on your home’s layout and usage.

FAQ: AC Filter Replacement

‣ How do I know when it’s time to replace my AC filter?
 If it looks gray, dusty, or discolored, replace it. Poor airflow, dusty vents, or allergy flare-ups can also be signs.

‣ Can I clean and reuse my filter?
 Only if it’s specifically marked as washable. Most standard filters are disposable and should not be reused.

‣ Will a dirty filter raise my energy bill?
 Yes. A clogged filter forces your system to work harder, which drives up energy usage and your monthly costs.

‣ Is filter replacement included in maintenance visits?
 Yes. Every Air-Tro maintenance plan includes filter inspections and replacements when needed.

Call Air-Tro Today for Air Filter Replacement

We’ve been keeping Greater Los Angeles cool and comfortable since 1969. Whether you need a new filter, a maintenance plan, or an indoor air quality solution, we’re here to help.

Don’t just take our word for it. Click Read our customers’ reviews

Contact us today to schedule service. Call 626-357-3535 today and speak to one of our friendly staff for a quote.