How Often Should You Change Your HVAC Air Filter?

An HVAC system is an important component of any home. An optimally functioning HVAC system ensures that you are breathing high-quality air. It minimizes breathing complications. Plus, it boosts the comfort of your interior spaces. That’s why you should ensure that it operates optimally. Change air filters. Replace an old filter with a 10x30x1 air filter. Change them regularly. Keep reading to find out how regularly you should change your air filters.

What Are Air Filters?

An air filter consists of spun fiberglass or pleated paper. For rigidity or stability, an air filter is framed with light cardboard. Inserted in return air ducts, air filters play a key role in purifying indoor air. They keep contaminants from your interiors, allowing you to breathe high-quality air.

Air filters can protect your spaces from dust, dirt, mold, and bacteria. Also, high-end air filters can protect you from pet hair, bacteria, and lint. Usually rated using the MERV configurations, air filters come with different efficiencies. Plus, different air filters come with different lifespans. Thus, it’s important to change them based on the manufacturer’s recommendation.

Changing Your Air Filters

Usually, you are advised to change your air filter after every 3 months. However, certain factors can affect how often you change your filter. For instance, where you live plays a key role when changing your air filters. People who are living in dusty areas will usually change their air filters more often than those in less dusty ones. The following factors will influence how often you change your filters:

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If you live in dry areas, you must change it more often. The same applies to those living in dusty areas.


Breathing air full of pet fur can be dangerous. An air filter will purify the air, protecting you from breathing fur-infested air. If you have more pets, you should change your air filter more often.

Age Of HVAC System

New HVAC systems are more efficient than older ones. Thus, you don’t have to change the air filter every after one month. On the other hand, old HVAC systems come with low efficiency. This means that (to deliver high-quality air) you should change air filters more often.

Respiratory Conditions

If you are suffering from any respiratory condition, consider changing your air filter more often. Ideally, change it after every 20 to 45 days. People suffering from breathing problems require high-quality air. The same applies to people with allergies.

Vacant Homes

If your home is vacant, you don’t have to change the air filter after 3 months. You can wait and change it after 9 to 12 months. If you are on a vacation, wait until you are back to change the air filter.

The Bottom-Line

Air filters play a significant role in the comfort of any home. Thus, don’t wait until it stops working to change it. Acting fast will improve the quality of air in your home or office. It will also optimize the functionality of your HVAC system. Charge it regularly. Follow the manufacturer’s instructions.


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