How Often Should I Change My Furnace Filter?

Maintaining a home furnace is essential to maximize the lifespan of the furnace unit itself as well as its overall functionality. Knowing when the time is right to change your furnace filter is imperative to prevent potential cloggings, breakdowns and unnecessary wear and tear on your heating unit and the system itself.

Make and Model


Before you change your furnace's filter, be sure to research the make and model of your furnace. Consider the date your furnace was installed as well as the last time you replaced your furnace filter. Because not all furnaces are created equally, some may require more maintenance than others, especially if it is older or an outdated model. Refer to the instructions printed on the side of your furnace or refer to an instruction manual that came with your furnace. You can also find instructions that are available online to determine how frequently you should change your furnace filter.

While most furnaces that measure between one and two inches recommend a replacement at least once every three months, four-inch filters should be changed every six months, and five-inch filters should be changed annually.

Keep Track of Maintenance Dates
On most furnaces, there is a space to write dates in which you have replaced your furnace's filter. Keep track of each time you replace and update your furnace's filter to ensure you are doing so in a timely manner, ultimately optimizing the performance and efficiency of your furnace.

Call on the Professionals
Maintaining your home's furnace, heating, cooling and plumbing systems may feel overwhelming, tedious or stressful to you, especially if you are inexperienced with maintenance jobs and tasks involving your HVAC system. If you are currently living in American Fork, Salt Lake City or the surrounding areas and are in search of an HVAC company you can trust and rely on, consider Gunthers.

You can call on Gunthers year-round for heating, cooling and plumbing HVAC services for both your home and businesses. Contact Gunthers to learn more about heating, cooling and plumbing services near you today.

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