Why It's Important to Change Your Air Conditioner’s Filter

Your HVAC system works around the clock to keep your home at the perfect temperature. Now it's time to do something nice for your heating and air conditioning. By switching out the air filter in your unit, you will increase the life of your air conditioner and make sure that it is running at its highest efficiency during the warm summer months. Read on to learn why changing your filter is important and how you can perform this simple, but vital, task.


One of the primary roles of this filter is to keep debris out of your HVAC system. Should debris get into the system, it could cause your air conditioning to run slower, or it could damage the entire unit. The filter also helps keep pollutants—including dust, allergens, and pet dander—from spreading throughout your home. You need to change your filter so there is regular air flow throughout your HVAC unit. If you notice that your A/C is not running up to par, you need to change the filter.


Changing your air conditioner filter is extremely easy. The filter is typically located near the duct return in walls, ceilings, furnaces, or the actual air conditioner. The filter should simply slide out.

Some filters are reusable so you will need to gently clean it and then put it back in. With most models, you'll have to replace the filter entirely. Remove the old filter and slide the new filter in the same way. There will be arrows on the filter to show you which direction should face the outside air. If you are unsure where your air filter is located or how to change it, contact our team at Just in Time Furnace for assistance.

How Often?

The simple answer is to change your air filter whenever it is dirty. The amount of time your filter can last before it gets dirty will depend on a number of factors, including the efficiency of your air conditioning unit, the number of pets you have (if any), and the air pollution in your area. A good rule of thumb is to check your air filter every 30 to 60 days. On a biannual basis (at the beginning and end of summer) you should give the air filter area a deeper clean by using a soft vacuum extension to clean within the duct.

To keep your air conditioning unit running as effectively as possible, change your air filter on a regular basis. If you need additional help to get your unit running better, call us today at 403-333-6666 to have the work done by one of our quality professionals.

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