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Your heating and cooling system keeps your home comfortable all year long. In addition to having a qualified HVAC contractor service it annually, you need to change its filter on a regular basis to keep the system running smoothly. Below is a brief explanation of why HVAC filters are important and how to change them.

What Is an HVAC Filter?

Your home’s heating and cooling system circulates warm and cool air through ductwork installed in your home. When debris, such as pollen, dust, and pet hair, gets into these vents, they can clog up the airways and prevent your HVAC from performing properly. The filter is what catches this debris before it infiltrates the ducts.

Why & How Often Do HVAC Filters Need to Be Replaced?

heating and coolingMost HVAC contractors recommend changing your filter every three to four months. And it’s important to be diligent about doing so—when a filter is clogged, your heating and cooling system circulates the debris back into the air, which creates poor indoor air quality. This can be especially uncomfortable for people with allergies and asthma. Clogged filters also force your system to work harder to keep your home at a comfortable temperature, which wastes energy and costs you money.

Is It Difficult to Change an HVAC Filter?

While the process may vary slightly depending on the make and model of your heating and cooling system, replacing an HVAC filter is a fairly straightforward process. What’s most important is that you make sure the unit is turned off before you begin and that you clean out any debris that made it into the air ducts before putting in the new filter.


If your heating and cooling system has any issues, the experts at Donovan & Jorgenson are ready to help. Since 1985, they’ve been providing the Greater Milwaukee area with a wide range of affordable residential services, including HVAC installations and air conditioning repairs. They have three locations in New Berlin, West Allis, and Mukwonago, WI, and are ready to help you keep your home comfortable year-round. Check out their website for more HVAC maintenance tips and to schedule an appointment today.

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