One of the most routine tasks to keep an HVAC system working properly is changing the air filter. The fibrous materials in an air filter remove airborne particles like pollen, mould, dust particles, bacteria, and other potential allergens from the air. A clean air filter is essential for air to effectively flow from the unit’s opening. A filthy and clogged filter prevents the unit from functioning properly and will probably increase hydro usage.

Recognizing the common signs of a dirty air filter can help you remember to change it — even better, get regular duct cleaning and maintenance to prevent these HVAC problems:


Common Signs of A Dirty Filter


1. High energy bill. When you notice an unusual spike in your monthly bill, check your air filter. If it is clogged, your unit has to work overtime to maintain proper airflow. The harder your unit has to work, the more energy it will consume. Changing your dirty air filter saves money in the long run.

2. AC doesn’t blow cold air. Dirt and other particles can collect and jam system components. In this case, the cooling process of an air conditioning unit will be impeded. If your AC isn’t cooling the house, consider looking at the condition of your air filter to determine if it needs changing.

Common Signs of A Dirty Filter


3. Unit malfunction. An HVAC system has to work twice as hard when the air filter is clogged. Then, it runs the risk of overheating. A dirty filter can affect both the air handler and your compressor. Overheating can cause the system to shut down (or cycle on and off too frequently), making it difficult to maintain the desired internal air temperature.

4. Allergic reactions. Dirty filters are often an “invisible” cause of allergic reactions. If you’re breathing dirty air in your home or office, it can affect your health, especially if you have asthma or other breathing issues.


Common Signs of A Dirty Filter



5. Frozen evaporator coil. The AC system’s evaporator coil absorbs heat from the air, then cools it before cycling it back to rooms and living spaces. If a dirty air filter is limiting HVAC airflow, the coil will not function properly. The condensation that normally builds on the coil can potentially freeze.

Dirty air filters affect the ability of your HVAC system to function properly; cleaning or replacing filters regularly can help improve indoor air quality.

Avoid dirty filter problems by hiring professionals for regular maintenance and cleaning. Contact Dr. Duct at (613) 845-0707 to get the HVAC services you need.