When to Replace the Filter in Your Heating System

Replacing the air filter in your home’s heating and air-cooling system is an essential household chore, but many homeowners forget this task and experience the unpleasant side effects that usually accompany a dirty air filter. Some cheaper filters may need replacing every month or so while higher-quality pleated filters can last six months or more. However, as a general rule you should replace the filter around every 90 days. 

Signs You Need a New Air Filter

Irregularities in inside air control are usually easier to detect for individuals who suffer from allergies and sensitivity to certain particles, like pollen or pet dander. These particles enter the air in the home and when they pass through the heating and air system, the filter traps them to prevent them from circulating back into the air supply. If you typically do not experience problems with your allergies inside and then start noticing symptoms, this could be a sign of a dirty air filter that needs replacing.

Factors to Consider 

There are additional factors to consider if you’re thinking of replacing your air filter. The heating and air systems in larger homes move a larger quantity of air, and more square footage means more potential to accumulate dust and other particles. Larger homes may require more frequent air filter replacement than smaller homes.

If you have pets, it is likely their displaced hairs will find their way into the air system of the home, so this may require you to replace the filters more often. This is also true if you have young children under the age of four; infants and toddlers have more sensitive and vulnerable respiratory systems, and regular filter replacement every month or so can help ensure health and safety from germs and airborne bacteria. 

Remember, just because an air filter looks clean does not mean that it is. If the filter still appears clean after three months of use or longer, you should still replace it if you’re experiencing issues with the air quality in your home.