Keep the air in your home clean and your HVAC system working efficiently with these expert-approved tips.

When was the last time you replaced the air filters in your home?

You probably aren’t changing your home’s air filters often enough.

Replacing dirty furnace filter in home

Credit: Bill Oxford / Getty Images

Heres what you should probably know about replacing air filters at home, according to HVAC experts.

How Often Should You Replace Your Home’s Air Filters?

Typically, its recommended that youreplace your air filtersevery 90 days for an average single-family home.

Dusty or dry climates require changing the filters more often.

Age of Equipment

Consider the age of your HVAC system.

When it runs frequently in hot or cold weather, it needs changing more often.

Vacation homes where the HVAC unit doesn’t run all year may have filters that need replacing less often.

Vacuum regularly to helpremove their hairfrom furniture and carpets.

Effects of Poor Air Quality

So how does poor outdoor air quality affect your homes air filters?

In this case, changing the filter once a month instead of once every three months is recommended.

Here’s what to look for:

U.S. Environmental Protection Agency.Climate Change Impacts on Air Quality.