Accessories for the Austin Air HM400
Questions & Answers
Austin guardian 1 air purifier. I need a knob replacement. And how to replace it
Charlotte asked on 2019-07-17
Hello Charlotte, Thank you for the question. I looked up the part and it is listed as No Longer Available/Discontinued sorry. There are no part substitutions listed. My suggestion here would be to call the manufacturer and see if they can provide you with a substitution for these part numbers. Hope this helps!