When Is It Time to Change Your AC Filters?

Your air conditioner is a key component of your home's comfort system, and it is essential to keep it running efficiently. To do this, you need to pay attention to the filters in your air conditioner and replace them when necessary.

Filters are responsible for trapping dust, allergens, and other debris that can get sucked into the system. Over time, these filters become clogged and must be changed in order for your air conditioner to work properly.

It is important to know when it is time to change your AC filters so that you can maintain the efficiency of your air conditioner. Here are some signs that may indicate it's time for a filter replacement:

1. Reduced Airflow

If you notice that the air coming out of the vents isn't as strong as usual, this could be an indication that your filters are clogged. Clogged filters will restrict airflow, making it more difficult for your air conditioner to cool down the space.

2. High Energy Bills

Another sign that you need new AC filters is an increase in energy bills. When they become clogged, they make it harder for your air conditioner to do its job which leads to higher energy consumption.

3. Dusty Rooms

If you notice more dust accumulating in rooms than usual, this could mean that your AC filters need replacing soon. Clogged up filters can cause dust particles and other debris from getting into the atmosphere which then settle on surfaces around the house.

4. Strange Smells or Noises

If there are strange smells or noises coming from your air conditioning unit then this could mean something isn't right with its performance - most likely due to blocked up filters preventing proper operation.

5. Poor Indoor Air Quality

The last sign indicating a filter replacement is poor indoor air quality. Clogged up filters allow allergens and pollutants into the atmosphere, leading to poor indoor conditions. If there has been a noticeable change in indoor air quality, then it may be time for new AC filters.


Replacing AC filters regularly helps maintain efficient operation of an air conditioning unit. If any of these signs have been noticed, then consider changing out those old ones with new ones - doing so will help save money on energy bills while also ensuring good indoor quality of life.