We just had a new rheems heat pump and CA the fiberglass filter that came with it had no reinforcement and was being sucked in in the middle these filters have cardboard diamond shaped reinforcements to prevent that and the air smells cleaner and breathe better after less than a day !!! il be buying again in a year !!

We have a child with asthma and severe allergies. This filter helps make at least home a VERY comfortable breathing place for him. We noticed an immediate difference in his breathing comfort after changing out our old filter for these.

These filters came packaged very well so that I was able to use the box for storage until they are all used. The filters do seem to help my allergies, but how can that be measured in the household? I will buy these again.

AMAZING!! When the sun beams through my windows, I no longer see little dust particles floating in the air. This is a MUST for anyone with allergies or respiratory issues like asthma & bronchitis! My dog has allergies. Other filters didn't help or needed frequent changing. Since I started using AllergyZone 2 years ago, my dog hasn't had any allergy related symptoms like redness & skin irritation which regularly flared up a month after replacing filter with other brands. I can leave this filter in 2-3 months for purified, clean & pleasant air that produces consistent filtration with NO diminished air quality during that time. So glad AllergyZone is now available on AMAZON!

AMAZING!! When the sun beams through my windows, I no longer see little dust particles floating in the air. This is a MUST for anyone with allergies or respiratory issues like asthma & bronchitis! My dog has allergies. Other filters didn't help or needed frequent changing. Since I started using AllergyZone 2 years ago, my dog hasn't had any allergy related symptoms like redness & skin irritation which regularly flared up a month after replacing filter with other brands. I can leave this filter in 2-3 months for purified, clean & pleasant air that produces consistent filtration with NO diminished air quality during that time.