I have started using these filters because of my severe allergies that hit me every summer. This past summer I thought would be a bad allergy season because of all the rain we had earlier in the spring. However I actually felt better all summer and it has to be because of the Filtrete filters that I have stared using. You have a customer for life.

The Filtrete 1550 Allergy Reduction filter does a remarkable job in filtering out the seasonal mountain allergens that blow into our North Central TX home. We use fewer antihistamines since we have installed the high efficiency filters. Thank you, 3M.

[This review was collected as part of a promotion.] I have used this 4" filter since replacing our furnace (used 1" Filtrete filters before this). Love how it cleans the air, especially since we have 2 Balinese cats. The only "con" about this filter is how hard it is to remove from the furnace. I finally figured out a way to attach a string to the front of the filter so that it's an easy pull-out when it needs to be changed. Perhaps Filtrete could come up with something like this, or 2 finger holes for easy removal.

I HAVE searched and cannot find a better filter than Filtrete. Not only does it make a noticeable difference in the air quality of our home, it has literally saved our HVAC unit. As do most new construction homes, ours came with the standard 'builder grade' system. Coincidentally, we have had a lot of storms and power surges this past summer. When our system (along with seven others in our neighborhood) burnt out last month, we were miraculously able to replace only the compressor, as opposed to the whole system. Since it came at a bad time for us financially, we had to opt for replacing the compressor only. Our HVAC technician told us that had we not been using good filters and replacing them regularly, that would not have been an option. Even though we will eventually have to replace the whole unit, we now have some wiggle room and time to save up. Meanwhile, our 'builder grade' unit and Filtrete filters are functioning beautifully. Thank you, 3M!!! You saved our lives (quite possibly literally--from this Southern heat and humidity)and allowed us some time to research and save for a new HVAC unit down the road a bit.

Bought first one in October 2014... 3 adults, a 1 year old & 4 dogs live here so I wanted a good filter. I saw them on a home show so I tried them now they are the only ones for us. I am a 65 year young grandma & clean air is very portant especially for my grand-daughter. Love your product. Thanks Kathy Alexander

After my electronic air filter system failed, I decided to to try the Filtrete Air Filter. (1550, 4"). I have been using it for the last four years. It seems to work every bit as as well as the expensive electronic system. I thought we would notice more dust in the house, but that is not the case!!

Finally found a filter to fit the huge furnace currently outfitted for "electromagnet" filtering. Because I don't use this type of system, I wanted a high quality air filter and Filtrete met the criteria. This is the second filter for me and I love the ease of installing. One question: I am an avid recycler and not sure how to recycle my used filters. Any thoughts?

This is the best filter for keeping the animal allergens under control. I put in a new one in the furnace yesterday before relatives with dog allergies came over and they had no problems the entire evening. So great! Better, too, for us non allergy people to not be breathing in all those minute particles.

[This review was collected as part of a promotion.] This is absolutely the best air filter I have found for my home. We had some minor construction in our kitchen, Sheetrock, taping and sanding. Dust was everywhere. Installed one of these Filtrete Healthy living filters and the air quality improved within minutes. I change my filter every season, the Healthy Living filters trap so much dust, dander and who knows what else. Great product worth the price!

Bought 1 4" airfilter that ended up being 5". Thought it was a fluke and took it back to the store. Went to another store and the only brand availabel was 3m again. Bought a 4" filter and once again measuring in at over 4.5" and does not fit. Last time I buy from 3m. Btw our furnace can fit 2, 2" filters perfectly but not 1, 4".