I am not sure what is going on with the Heating plus Air Conditioning stores lately! I have several heating plus air conditioner supplier stores close to me, plus neither of them have our favorite kind of air filter, which is the HEPA air filter, and although, even if I was less picky plus decided to go for a lesser quality air conditioning system filter, they are out of most of those too! All they have left at the Heating plus Air Conditioning companies is the entirely cheap generic filters, which there is no way I am going to risk damaging our Heating plus Air Conditioning machine by using those bad things! When I first observed the store was out of stock, I didn’t entirely guess that much of it, but however, when I returned a month later, plus they were still out of stock, that is when I was start to get angry. I even went to the other air conditioner store, just to see if they had any of the filters in stock, which of course they didn’t, or otherwise I wouldn’t be complaining about this right now. I am just thrilled that I still had a single extra air filter left over, otherwise I don’t suppose what I would do. I have only had the new air filter in for a month, plus I usually change out our filters every 3 months, so hopefully in the next several months, the stores will have the filters back in stock. If they are still not in stock, I might have to look into ordering online, plus hoping that will do the trick.