The Importance of Replacing Air Filters

Why is it Important to Change my Filters in a Timely Basis?

A homeowner is advised to change their HVAC filters on a regular basis in order to keep the air in the home clean. This should be done regularly in order to decrease the chances of pollutants and allergies from entering the home.

The best thing about changing a filter is that it is an easy task and very inexpensive to achieve. Here is more information on changing the filters for the heating and cooling system:

Effects Of Not Changing HVAC Filters

Most homes use a heating pump or furnace in order to provide ventilation in the home. This includes the heating and air-conditioning system. Each of the filters have their own screen used to prevent dangerous particles from clogging up the system. When the filters are not regularly changed, dust and soot can enter the system and damage the machinery.

The system may also experience a pressure drop which can lead to a reduction of air that blows out of the system into the home. This adds a lot of strain on the machine, causing it to malfunction or work incorrectly.

This can cost the homeowner thousands of dollars in repairs or for a replacement. Dirty filters may also become damp and produce mold. Mold can lead to serious long-term health damage, such as cancer, lung disease and respiratory infections.

Some units come with a pre-fixed label that will show the consumer how to replace the unit. It is always recommended to hire a professional to take care of repairs and replacements.

How often should a filter be changed?

Most HVAC and furnace units contain many moving parts, which is why it’s important to have your system professionally inspected at least once a year. During this check, technicians can spot issues such as cracks in belts, worn components, or buildup in critical areas before they lead to bigger, and more expensive repairs.

One of the simplest yet most important maintenance tasks is replacing your air filter regularly. A dirty filter can cause problems like reduced airflow, clogs in the fan and coils, and even damage to your ventilation ductwork.

As a general rule:

• Change your filter every 1–3 months under normal conditions.
• If you have pets or a large household, change it once a month to keep up with higher dust and dander levels.
• If someone smokes indoors, you have a fireplace, ongoing construction, a large garden, or a household member with respiratory issues, monthly changes are essential for cleaner, healthier air.
• If the filter is visibly damaged, damp, or has mold, replace it immediately—don’t wait for your next scheduled change.

While most homeowners run their HVAC systems for heating or cooling about six months out of the year, filters can still become dirty quickly. Staying on top of filter changes will help your system run more efficiently, improve indoor air quality, and extend the life of your equipment.

Is your Greenwood HVAC system working properly? Call Johnson Heating, Cooling, and Plumbing today at (317) 714-0936 to get more information on why you should change your air filter.