How Often Should You Change Hvac Air Filter. The engine air filter should be replaced between 15000 and 30000 miles depending on driving conditions. To stay on top of this leave a note on your HVAC unit with the date for the next time you need to replace your filter.
Many of these types of homeowners only change their filters every six months to one year. If your allergies are moderate. Bear in mind that a dirty filter will slow down the airflow and force the system to.
However there are some good reasons to replace your HVAC filters more often.
Allergies If you suffer from allergies even the smallest amount of dust or debris in the air can trigger a reaction. If you live alone and have no pets in the picture you can try changing your air. 1-inch and 2-inch air filters should be replaced about every one to three months. Change 1- to 2-inch filters every three months.
