Most HVAC filters should be replaced every 1 to 3 months. However, the exact timeframe can vary based on several factors:
Type of Filter: Different filters have different lifespans. For example, HEPA filters can last up to 6 to 12 months, while standard fiberglass filters may need changing every month.
Usage: If your HVAC system runs frequently, you might need to change the filter more often. During peak seasons, such as summer and winter, the system works harder, which can clog the filter faster.
Allergies: If anyone in your household has allergies, a cleaner filter can help reduce allergens. In such cases, it might be necessary to change the filter more frequently.
Reduced Airflow: If the airflow from your vents seems weak, it could be a sign that the filter is clogged and needs replacing.
Increased Energy Bills: A clogged filter forces your HVAC system to work harder, leading to higher energy bills. If you notice a sudden increase in your energy costs, check the filter.
Visible Dirt and Dust: If you can see dirt and dust on the filter, it's time for a replacement. A dirty filter is less effective at trapping particles.
Unpleasant Odors: If you detect musty or stale odors coming from your vents, it could be due to a dirty filter. Replacing the filter can help eliminate these smells.
Turn Off the System: Always turn off your HVAC system before replacing the filter to avoid any damage.
Check the Size: Ensure you get the correct size filter. Check the dimensions on the old filter or consult your HVAC system’s manual.
Install Properly: Make sure the new filter is installed correctly, following the arrows on the filter that indicate airflow direction.
Regular Checks: Even if you follow the standard recommendation, it's a good idea to check your filter regularly. Every month is a good practice.
Available 24/7 emergency service