When you are buying air filters for your central heating and air conditioning system one thing a lot of folks do not realize is the fact that you need to get the right fit and size for whatever it is that your air filters are inserted to.
There are so many different shapes and sizes when it comes to air filters for central heating and air conditioning systems. It could be that you may need a single air filter that is smaller or like my central heating and air conditioning system, you need two air filters that are rather large. That is the way it always varies per heating and cooling set up in your home when it comes to air filters. I learned this just a few months ago when I moved into a new house that had this unusual air filter set up on the central heating and air conditioning system. I had never heard of having 2 large air filters before. It goes to show how much I know. It may be because this central heating and air conditioning system puts out more grime and dust than others? I have no idea to tell you the truth. All I know is that I have to buy 2 very large air filters each time. Do not ask me what the dimensions are because I have them written down somewhere and I look at it every single time I need to buy more air filters for my central heating and air conditioning system unit. So always check the size of the air filters that you may need before buying them for your HVAC unit.