Remove the A/C filter. This process can vary depending on your model and whether you have a whole house system or a window air conditioner. Check your owner's manual.
Run the A/C filter under warm running water to remove dust and debris.
Continue holding the filter under the water. When the water starts to run clear, remove the filter.
Lay the filter flat on a towel and wait for it to be completely dry before putting it back inside your air conditioning system.
Things You Will Need
- Not all A/C units have washable filters. Some simply need replaced when they get dirty. Consult your owner's manual.