How Often Should You Change Your Furnace Filter?

Changing your furnace filter is crucial since it improves your indoor air quality. The frequency of replacing it depends on the climate and household factors. Some of the elements that matter are whether you have pets and the number of people in your home. This begs the question, how often should you change your furnace filter?

dirty air filter - how often should you change your furnace filter

What is a Furnace Filter?

A furnace filter captures dust, debris, dirt, pet dander, and other allergens in your home. The machine filters the air so that you can inhale clean and fresh air. Typically, it removes pollutants and contaminants that ruin air quality. If you have allergies, asthma, or respiratory issues, a filter will make your breathing easy.

How Does It Affect Furnace Performance?

A clogged or dirty filter won’t prevent dust and debris from circulating in your home. When pets shed skin or fur, the dander will remain floating in the air since the filter isn’t working correctly. You and your loved ones will inhale allergens daily.

Most importantly, your furnace will overwork to provide you with warm and clean air. In that regard, the unit will become less efficient due to the dirty or worn out filter. It will result in high utility costs at the end of the month since the system runs continuously.

Therefore, changing the filter is paramount if you want to enjoy energy savings. Plus, your family will be safe from contaminants that aggravate allergies and asthma. You can sleep soundly at night as you enjoy the utmost comfort.

When Should You Replace Your Filter?

The ideal period to change the filter in your furnace is after every three months. It will work ideally to get rid of pollutants in your home. If you notice that the filter is visibly dirty, you need to replace it. Plus, if your allergies have become worse, you might need a new filter. It likely means that the air quality in your home has deteriorated.

Excessive dust accumulation in your residence indicates that the filter is no longer functional. You’ll need to replace it so that it can eliminate the dust. Also, strange smells from the heating unit show that you should get another filter.

If the furnace is frequently running, the filter isn’t in excellent condition. When the machine runs more than it should, the filter gets dirty within a short time. Thus, you need a new one so that the system won’t overwork to meet your heating needs. You can save significantly on heating costs since the furnace will preserve energy.


If you have issues with your filter, contact Official Heating & Cooling for help. Our experts will help you select an item that will serve you and meet your expectations.