How Often to Change Your AC Filter in Florida
In Florida, your air conditioner runs most of the year. That means the filter fills up faster than it would up north. If you forget to change AC filter pads on time, you can pay for it in higher bills and repair calls.
How often to change your AC filter
| Filter type | Typical schedule in Florida |
|---|---|
| 1-inch fiberglass | Every 30 days |
| 1-inch pleated | Every 1 to 2 months |
| 4 to 5-inch media filter | Every 6 to 12 months, per the label |
| Washable filter | Rinse every month |
Change it sooner if you have pets, people with allergies or construction dust in the house. Also, check it more often in summer, when the system runs the longest.
Signs your filter is dirty
- The filter looks gray, and you cannot see light through it.
- Weak airflow from the vents.
- More dust on furniture than usual.
- The system runs longer to reach the set temperature.
- Ice on the indoor coil or the copper lines.
Why a clean filter matters
A clogged filter blocks airflow. As a result, the coil can freeze, the blower works harder and your power bill goes up. In fact, a dirty filter is one of the top reasons we see an AC not cooling.
Clean filters also help your indoor air. The EPA explains how filtration fits into a healthy home on its indoor air quality page.
Which AC filter should you buy?
First, match the size printed on the edge of your current filter. Next, pick a rating your system can handle. A very dense filter can choke airflow on some systems. If you are not sure, ask your technician at your next tune-up.
Tip: set a reminder
Write the date on the filter frame with a marker, and set a phone reminder for the next change. It takes one minute and saves real money.
Want cleaner air than a filter can give?
For allergies or mold concerns, our indoor air quality options and dehumidifiers go further than a filter alone.
Need a tune-up with your filter change?
Our AC tune-up includes a filter check, coil cleaning and a full system test.
Change AC filter: frequently asked questions
Can I run my AC without a filter?
Only for a short time. Without a filter, dust coats the coil and the blower, which leads to costly cleaning or repairs.
Which way does the arrow on the filter point?
The arrow points toward the air handler, in the direction the air flows.
Does a dirty filter raise my power bill?
Yes. Low airflow makes the system run longer to cool your home, so it uses more energy.
