When you change your A/C filters all of the time, that is only more money that is being spent because then you will have to buy new ones pretty soon.
So I didn’t change my filters that often.
Often enough to make sure my cooling unit didn’t overheat, but not often enough where I felt it was a waste of money. I also got the moderate A/C filter brands, rather than HEPA filters, since I think they should do just fine. Anyways, I ended up changing my mind when I took out the old dirty air filter. Usually the air filters are pretty gross, as expected, but this time the HVAC filter was absolutely disgusting! As I was taking it out, literally balls of hair, lint and who knows what fell out! It was also slightly damp which only added to the disgust factor. I looked and I couldn’t even see through the filter it was covered in so much stuff. I decided after that that I will go ahead and start changing the air filters out a bit sooner. Not only is that bad for the A/C unit, but it’s just gross to have in the house and going through the air. Maybe eventually I will even update to the HEPA filters, but I am trying not to spend too much money on filters or the heating and air conditioning unit. That air filter was the last of the stock I had, so I had to visit the nearby HVAC store and buy a new stock. I went ahead and bought one HEPA air filter to give it a go and see how it does, maybe it is worth the money.