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.

Furnace filter change frequency.

Signs your air filter needs changed. The filter is visibly dirty. 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. Does someone in your home have asthma and or allergies.

The merv rating also determines generally how often to change your furnace 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. So be sure that your furnace filter is switched out at the start of winter fall spring and summer. As your filter traps more dirt dust and allergens from the air filter efficiency decreases.

Fiberglass filters are a lower cost option but they need to be disposed of and replaced roughly every 30 days. 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. Our very general suggestion is to check your air filter every 1 to 3 months and change it when there s a thin layer of dirt on the filter. Find out below if you should be replacing your filter more often.

When to change an air filter. 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. Merv 8 filters should be changed every 3 4 months merv 10 11 filters every 6 months and merv 16 filters every year. 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.

As a general rule you ll want to replace pleated air filters and furnace filters in your home every 90 days. 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. Standard 1 inch filters need to be changed every 1 to 3 months while high efficiency filters should be changed approximately every 6 to 9 months. The longer the filter is in place the more dirt dust and allergens are trapped clogging the filter and decreasing their efficiency.