[This review was collected as part of a promotion.] So far I have only used this for a short period of time but it seems to be working. I have checked to see if there was debris in the filter and there is. As far as air quality, I can’t say I have noticed a difference. Overall the filter seems very well made and durable. Hoping it holds up for the 3 months.

I've purchased this item several times. Overall I. Stified with its performance The only negative is, the filter turns black (some of them, not all) after about 3 weeks. No smokers in the house. Minimal fried foods, we seldom use candles. My Ac guy said it could be activated charcoal but the package didn't say that. What causes this?

[This review was collected as part of a promotion.] I have tried so many filters, but nothing worked like 3M - Filtrete™ Ultra Allergen Bacteria and Virus. It's perfect for my home, with a dog that sheds everywhere and little ones, i needed the right filter to keep virus and bacteria away! very pleased with the results, i got a whole bunch to cover the whole house. Great quality and efficient for sure.

[This review was collected as part of a promotion.] I have tried several filter brands and most of them collapse after a few weeks. These hold up until it’s time to change them…every time. The filters are made well and catch everything it needs to. We change them every 60 days or so and it keeps the air quality decent in our home of 4 dogs. I will only ever use Filtrete filters from now on.

Exactly what I was looking for.

These filters always do a good job cleaning our furnace. So we can breathe easier.

Helps so much since my son refuses to clean up after his cat

These are quality filters at a value price.

This 4-pack is a trendous savings over purchasing the filters individually.

Love these filters, use them for my furnace. Keeps the dust down.