When to change the furnace filters.
There are the various factors which determine how often you must change your air filters.
• Type of furnace filter
Furnace filters differ from each other based on the material, thickness and other differences. If you buy a cheap filter of low quality you have to change it every month but a high quality filter can last as long as three months.
• Allergies
If any member of your house is having allergies problem then you have to change the filters more often.
• Presence of animals
Pets are the other factors which affect the furnace filters. Pet’s hair move inside the entire house and get trapped in the filters which make it dirty.
So if you have pets in the house filters are to be changed more often.