Review on Trettitre HEPA Air Purifier: Home-Ready with H13 True HEPA Filter, Eliminating Dust Pollen Smoke Odors - Perfect for Bedroom, Kitchen, and Office (2, Black) by Shantel Griffin

We received 2 units for our 45ft RV. Hoping to get rid of allergies. They work 24/7 at low speed for almost a month. The filter reminder will be activated, which should work after 500 hours. Checked filters. They look like new. The allergy is still there. It would be better to know that the airflow for the filter change indicator is limited than after 500 hours of use. Time will tell if I get relief from my allergies with this cleanser.