FEATURED · 5 MIN · EASY
How to change your air filter
A clean filter helps your system breathe and keeps dust down. In Austin heat, most homes should check filters monthly and change them every 1 to 3 months.
You'll need: the right size filter and a marker.
- Turn the system off at the thermostat, so it doesn't pull in dust while the filter is out.
- Find the filter. It's usually in a return vent in a wall or ceiling, or in a slot by the indoor unit.
- Read the size printed on the frame of the old filter, for example 20 × 25 × 1. Buy that exact size.
- Match the arrow. The arrow on the frame points toward the unit, in the direction the air flows.
- Slide it in, close the vent, and write today's date on the frame so you know when to change it next.
- Turn the system back on.