[This review was collected as part of a promotion.] I change them every 3 months just like clockwork, and they work great

I bought several 4" filters for my central Heating & air system. I have been very impressed with the performance of these filters.

I breathe easier knowing that all the dirt and other microscopic things caught in the filter are not floating around in the air I'm breathing.

I trust these air filters to help protect.our family and have confidence that it's taking out all the germs!

I can't believe all the dust this filter picks out. I thought my old space guard was good, but this is better.

I have used Filtrete filters for many years and the best. I can tell when 3 months is up and needs replacing

We are amazed when we replace the filter and see how much dirt was collected. We change our filter every 6 months!

I've been using The Healthy Living A/C filters for 12 years now. They really help clean the air in my house!!!

i change it every 6 mos and motor compartment looks like new which is the point if your compartment is clean your motor is too

I have terrible allergies and I feel this really help keep the indoor allergens at a tolerable level.