When I asked my wife to option up some air filters the other day, I was surprised when she came back with the cheapest air filters she could find. She was enthusiastic because she said she found the best deal on air filters and they were the right size for our Heating and A/C system. She was drastically disappointed when I told her to please take them back. She asked immediately what the concern was. She thought I was just being a mean grouch as I guess I do act like sometimes. But this was more of a drastic concern than anything else. I would not use cheap air filters in my Heating and A/C system because they won’t improve the air quality and they don’t protect your Heating and A/C system. By using these air filters that she picked up, both of us might end up experiencing Heating and A/C complications down the road and our children might have trouble breathing with poor air quality. I didn’t want to do that at all, I didn’t care if the air filters were free! Well, it was disappointing because she said the store refused to take back the air filters. That’s when I took the air filters and went myself. I showed them the receipt and I told them my wife was misled on the quality of these air filters. They tried to give me the same issue about not being able to return items that were on sale, although I made a big issue of it. They ended up processing the return because they didn’t want to deal with me and I ended up getting some quality air filters with a high MERV rating. Now in my wife’s defense, I really should have told her not to get cheap air filters with a low MERV rating, although I just assumed she would guess that.