How often should I replace my AC filter in Florida?

In Florida’s hot and humid climate, AC systems work harder and filters collect dust, pollen, and moisture more quickly than in cooler states. Here’s a good rule of thumb:

• Every 30 days → If you use inexpensive fiberglass filters.
• Every 60 days → If you use pleated filters and don’t have pets.
• Every 30–45 days → If you have pets, allergies, or run your AC constantly (common in Florida).
• Every 15–30 days → During peak summer months or if someone in the home has respiratory issues.

👉 A quick check: hold your filter up to the light. If you can’t see light passing through, it’s time to replace it.

🗓 Florida AC Filter Replacement Schedule

Spring (March–May)

• Replace every 30–45 days
• Pollen is high in Florida during spring, so filters clog quickly.
• Check monthly and replace if visibly dirty.

Summer (June–August)

• Replace every 15–30 days
• Your AC runs nearly nonstop in Florida’s heat and humidity.
• Pets + heavy use = shorter replacement cycle.

Fall (September–November)

• Replace every 30–45 days
• Humidity starts dropping, but dust and debris from hurricane season can add strain.
• Inspect filters monthly.

Winter (December–February)

• Replace every 45–60 days
• AC runs less often, so filters last longer.
• If you use a heater occasionally, check filters monthly.

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✅ Pro Tips for Florida Homes:

• Mark your calendar or set a phone reminder for filter changes.
• Buy filters in bulk to save money and make replacements easier.
• If you see mold, moisture, or a musty smell—replace immediately regardless of the schedule.