5 Common Questions about Air Filters

5 Common Questions about Air Filters

Many of our posts talk about the importance of changing your air filters. It’s one of the easiest ways to make sure your HVAC is able to run as efficiently as possible. But you may not realize that not all air filters are created equal. In this post, we’ll answer five common questions about filters, how they work, the different types, and how to determine which kind is best for you and your home or business.

Q: Should every heating or cooling system use a filter?

A: Yes. Any sort of central air system, for heating and/or cooling at a home or business, should use an air filter. The most common location to find a filter is at the return duct. Most modern homes’ return ducts are located in the ceiling and others are commonly found beneath your indoor unit.

Q: What’s the purpose of an air filter?

A: Air filters help clean the air as it circulates throughout your home or business. Filters are able to trap pollen, dirt, debris, and other contaminants from your home, making sure they don’t recirculate. They are critical for maintaining clean air that’s healthier, smells better, and is less irritating to allergy sufferers.

Q: Do air filters need maintenance?

A: Like every other appliance – yes! A clogged filter not only means poorer air quality but also means poorer airflow, which reduces comfort and efficiency. The good news is that you can provide maintenance on your own simply by changing out filters regularly.

Q: How can proper filters save me money?

A: Severely clogged filters can overwork your system to the point that it breaks down or needs repairs. When the filters are clogged, your unit has to work harder to push the air through your home. It also means that your system is running longer while it works to bring your home to the desired temperature. So clean filters and an efficient HVAC system also equals saving money!

Q: What are some filter options?

A: Filters come in a variety of sizes, so make sure to know the dimensions of your filters before heading to the hardware store. Depending on the size of your home, you may have two or more filters – in that case, they may be different sizes. The thickness can vary as well – a one-inch filter will typically fit nicely into your filter cabinet, but be sure to check. Pleated filters tend to last longer, but non-pleated filters are also available. Finally, make sure to check the MERV rating. A high MERV rating means the filter is better at catching smaller particles and contaminants.


The expert technicians at The Bosworth Company stand ready to answer any of your questions about filters, HVAC repairs, replacements, or a myriad of other services. Make an appointment online, or call us today at (830) 428-2764. It’s Worth the Call. Always.