I recently bought HEPA brand air filters for the very first time. And by the way, I am talking about HEPA air filters for my central heating and ari conditioning system unit. I will tell you that these HEPA air filters for my central heating and air conditioning system are the very best! I had never tried air filters that were this great before. The HEPA brand air filters for my central heating and air conditioning system are like no other air filters I ever tried in the past. They really make it so that the air flow and air quality is good in my house. Much better than before when I was buying regular generic brand air filters for my central heating and air conditioning system unit. The HEPA brand air filters that I just tried and will be trying and most likely keeping for life are way more expensive than those older generic air filters for my central heating and air conditioning system unit. However it is well worth paying the extra price for them because they are of the most top quality and utmost top of the line in air filters on the heating and air conditioning market today. I am actually very proud of myself that I actually had the guts to take the plunge and buy a bunch of HEPA brand air filters for my central heating and air conditioning system unit to be able to try them out and see what they could do. They do not disappoint in any way, shape or form. I feel that HEPA brand air filters are where it’s at today!