Every air filter and every air conditioning system are different so it depends on a variety of factors.
- On average, 1″ disposable filters should be changed every 1 – 3 months.
- If you have a thick, high-efficiency furnace filter, it could last anywhere from 6 months to a year!
Refer to the manufacturer’s recommendations when it comes to filter replacement schedule. The timing of furnace filter replacement depends on the type and efficiency of your filter, whether you have pets or smokers in the home, any allergy or asthma conditions within your family, and other factors as well. To be safe, set a reminder to check your filter at least once a month and don’t wait any longer than the manufacturer’s recommended schedule to replace your air filter.