Under normal use, Purifan filters last about a year in a home and six months in a classroom. Smoking filters should be replaced every three or four months if there is heavy smoking. For best and safest performance, we recommend replacing them with genuine Purifan filters.
Should you need to return your Purifan for any reason please call 1-800-686-6131 to obtain a Return Merchandise Authorization number. Once you receive your RMA number, ship the Purifan postage-paid with a check for $35.00 to:
5200 E 35th ST N. Suite A
Wichita, KS 67220
316-932-8001 x 16