WHEN SHOULD I CHANGE MY FURNACE FILTER?

We recommend homeowners check their furnace filter every month and replace it as needed. 

Different types of filters are rated to last varying amounts of time:

• Economy panel filters only last about 30 days 
• 2-inch filters should be changed every three months 
• 4-inch filters can last six months 
• 5-inch filters could be good for up to 12 months

However, there are many factors that can affect how quickly the filter becomes clogged:

• Having pets in the home will clog filters faster with their dander and fur.
• Keeping windows open or going in and out of the house often can let in dust and debris.
• Smoking in the house can reduce the longevity of filters.

Even though a 2-inch filter should last about 3 months, if you like to keep the windows open in the spring and have multiple pets, it could be full after a month. That’s why we encourage all homeowners to make filter maintenance a monthly task.

Why It’s Important to Change Filters
A blocked filter restricts airflow and can cause one of your furnace’s safety features to activate, shutting it down and leading to costly service calls. If you have allergies or respiratory issues, indoor air quality can suffer from clogged filters and aggravate breathing issues. 

Signs Furnace Filter Needs to be Changed
Every month, make sure the furnace is off and remove the filter. If it’s visibly dirty and you can’t see the filter material, it’s time for a replacement. Prior to changing the furnace filter, you might notice that the HVAC system is cycling more frequently or that the home is dustier than usual—all signs that the furnace filter needs to be replaced.

Remember: Even though it’s a furnace filter, it needs to be checked during the summer months as your whole-home AC unit also requires a clean furnace filter to operate.

For more information on furnace filters, contact a Team Harding Specialist today!