Everyone knows the furnace filter needs replacing, but they might not know exactly how to tell when it needs replacing. Here are some things to look for when determining if the furnace filter needs replacing:
- There’s built-up dust and dirt on the filter, making it grey in color
- The house is dustier than usual
- The HVAC system is cycling longer
Watch out for these telltale signs by:
- Examining the filter regularly
Often during seasons with extreme temperatures, the furnace filter will need to be changed more frequently to keep up with the HVAC demand. It’s a good idea to check the filter at a minimum of every 4 weeks during winter.
When examining the filter, check for excess dirt and grey color. Also, take note of the sound of air moving through the furnace before taking out the filter. After removing the filter, if there is a significant release of air pressure, the filter is too dirty and has lost effectiveness.
- Monitoring the Environment
Keep an eye on the dust level in the home. If it seems ledges and surfaces need to be dusted more often, it can be a good sign to check the furnace filter. The buildup means the filter is clogged, and can’t remove dirt and dust as well anymore.
- Watching for Health Issues
In homes with allergy and asthma sufferers, clean air is even more important. If allergies and asthma attacks are starting to become more frequent, the furnace filter might not be effectively doing its job. It’s time to check the filter to see if it is dirty.
The best thing homeowners can do is set up a routine with the furnace filter. Have some sort of reminder each month to check it for dirt and dust. It should be changed every three months minimum, but might require more frequent changing if the furnace has to work harder this winter.