
Which Air Filters Should I Buy in Charlotte, NC?
It depends more on the occupancy of the house and if the duct system was properly sized during installation. Let’s look first at occupancy, the amount of people, pets and traffic will tell you what you need and how often to change the filter. If you have a bustling household, 2.5 kids a dog a cat, a llama, and the door to the outside is constantly swinging open and closed you will need to change your filters every 20-30 days.