I have recently started increasing my air filters more often. The reason being I noticed a sharp decrease in our indoor air quality. The heating & cooling in my home has always been entirely good, & even now the heating & air conditioning is still entirely good, however, it turns out that I wasn’t increasing the air filters often enough. I used to change the air filters out about once every 6 months or so, so about twice a year, and for a while, this didn’t seem to have too bad of an effect on my air conditioner component, but once I got multiple pet cats & a pet cat, that all changed. Suddenly, all of their pet hair was suffocating my poor heating & air conditioner machine. I noticed my indoor air quality was suddenly more stuffy & had a bit of a odd smell. I started researching reasons as to why this might happen, & a lot of people were recommending getting a whole home air cleaner, which I could consider, but I didn’t suppose my air quality was bad enough to need an air cleaning system. That is when I saw someone advise increasing your air filters out more often, & so that is what I decided to do. I purchased a big pack of HEPA air filters, & I started increasing them out every few months. That still wasn’t enough, & so now I change the air filters out every month, & I have genuinely noticed a difference in my home.