Changing Furnace Filters

This topic is almost brain-dead. Yet HZG sees this issue a minimum of 3 times per week. Changing furnace filters.

Clean air filters prevent dirt from collecting on the fan and heat exchanger of forced-air furnaces. Dirt reduces air movement and efficiency if it builds up on the filters, blower and heat exchanger.

The recommended frequency of filter changes depends on how much dirt is contained in the airstream and how long the furnace is running. Filters in some homes may last 6-months before needing replacement or cleaning, while other homes' filters may need to be cleaned or replace every month during a heating cycle.

Also, some furnace filters fit snugly in an enclosed spot of the furnace, while others are exposed. When we encounter an exposed filter, we use duct tape to cover the opening and show the homeowner. Reason? The exposed cavity invites in extra dirt, forcing a filter change to occur sooner than needed.

HZG's recommendation? In climates such as Ohio's, change the filter monthly during the heating cycle and every 3-months after.

Next Topic: Duct Airflow Problems