Furnace Filter Change Frequency

Now you have to keep in mind these are averages or good rules of thumb to go on but there are many factors that can actually increase how often you should change them more frequently than the recommended time frames.

Furnace filter change frequency.

A general rule of thumb for pleated air filters like ones made by filterbuy is to replace your filter every 90 days. Your furnace s owner s manual will specify the best merv rating for your furnace and in general filters with a merv rating of 6 through 9 should be changed every 90 days while those with a merv. The filter is visibly dirty. Staying on top of furnace filter changes will positively affect the health of your family and your hvac system by improving your indoor air quality.

When to change an air filter. Don t wait for it to completely clog before you change it doing so means you ll pay higher energy bills and risk expensive furnace repairs. Usually 30 days is on the low end and up to 12 months on the higher end. Signs your air filter needs changed.

The longer the filter is in place the more dirt dust and allergens are trapped clogging the filter and decreasing their efficiency. A good rule of thumb is to change 1 2 inch filters every three months 4 inch filters every six months and 5 inch filters every 12 months. The frequency at which your air filter should be changed depends on a variety of factors including the type of filter in your hvac unit. As your filter traps more dirt dust and allergens from the air filter efficiency decreases.

Though you don t have to change your furnace filter every single month it should be changed every three months at most as the seasons change. Merv 8 filters should be changed every 3 4 months merv 10 11 filters every 6 months and merv 16 filters every year. Find out below if you should be replacing your filter more often. Fiberglass filters are a lower cost option but they need to be disposed of and replaced roughly every 30 days.

So be sure that your furnace filter is switched out at the start of winter fall spring and summer. The merv rating also determines generally how often to change your furnace filter. Does someone in your home have asthma and or allergies. When in doubt we suggest that you check the filter to see if it is truly dirty.