My father bought this nuwave e1000 to use when he would come over for visits to my house so my cats didn't bother his allergies. It has always worked flawlessly and has not had very many hours of use. If you want a high end unit at a budget price , here you go ! This can be controlled via an app on your phone too. Only selling because we had a completely new hvac installed in our home and it's filtration system is outstanding.. 250$