Austin Air filters are designed to last up to 5 years under normal residential use. Replacement filters for all standard size models are available below.

You can find the size of your existing filter by looking for a label on the bottom of the unit. Model HM400 indicates standard size filter and Model HM200 indicates junior size filter.

Alternately, Standard size filters measure 14.5” high. Junior size filters measure 11.5” high.

All standard size units are interchangeable with all standard size filters. So, if you purchased a HealthMate® and would like to upgrade to a HealthMate Plus® you can replace your old HealthMate® filter with a new HealthMate Plus® filter.