There was a time when I used to believe that HEPA air filters were the best no matter what! Well, I actually learned the strenuous way that HEPA air filters have to be used for extremely powerful Heating plus Air Conditioning appliances. With a traditional Heating plus Air Conditioning appliance, the system fan is not really powerful enough to push air through the HVAC duct with the dense material of a HEPA air filter. These filters are fantastic at removing 99% of the contaminants from the air, which is really nice for the air quality, however a lot of systems aren’t equipped to handle HEPA air filters. So when I was residing in this current place with a usual forced air Heating plus Air Conditioning appliance, I was wondering why I wasn’t able to achieve the temperature control settings. It was actually because the HVAC appliance wasn’t strong enough for the HEPA air filter! I came to find that I could just use a whole home air purifier that utilizes a HEPA air filter to remove the contaminants from the air. For our Heating plus Air Conditioning appliance however, I would just use a nice MERV rated air filter to take on the job. After I started using these air filters, I experienced no complications with our Heating plus Air Conditioning appliance at all! So, I still think HEPA air filters are ideal, however you certainly have to have a very powerful Heating plus Air Conditioning appliance to handle them! They’re certainly fantastic in hospitals as they keep all those contaminants out of the air plus people are able to experience excellent air quality. If you are thinking about using these kinds of air filters, make sure to see if your Heating plus Air Conditioning appliance can handle them first.