Can Furnaces Run Without Filters?

September 6, 2019

Filters are often one of the most overlooked parts of furnaces. This leads to a lot of people thinking that they may not need to bother with regular filter installations or replacements. Is this really true? Keep reading to find out.

What Does a Filter Do for a Furnace?

A filter has many important roles. Furnace filters ensure that air pulled into the furnace to be heated does not contain any debris. It can help keep you from inhaling dust, pollen, pet hair, and other items. Filters also ensure that your furnace does not get random items lodged in components.

What Happens if You Run a Furnace Without a Filter?

Technically, it is true that a furnace can run if you do not have a filter in it. This does not mean it is advisable, however, because you may face many problems. If something gets sucked into the furnace, it can break your system and require you to call Expert Air Control for some Puyallup furnace repair services. Even if the furnace does not break immediately, the layer of dust can keep it from operating efficiently. You may also find it harder to breathe due to bad indoor air quality.

How Often Should You Change Your Filter?

Since filters are so important, you should never run your furnace without a filter unless it is an emergency. It is also important to put in clean filters regularly. How often you need to change the filter will depend on the size you have. One-inch filters usually need changing every three months while thicker 4-inch filters only need changing every six months.

Interested in learning more about how your furnace works? Expert Air Control is here to help with all of your heating needs, and we also provide plenty of other maintenance, repair, and installation services for HVAC systems. Get in touch with us today to learn more about furnaces and services what we have to offer.