Austin Air filters are designed to last up to 5 years under normal residential use. Replacement filters for all junior 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.

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

All junior size units are interchangeable with all junior size filters. If you purchased a HealthMate Junior® and would like to upgrade to a HealthMate Junior Plus® you can replace your old HealthMate Junior® filter with a new HealthMate Junior Plus® filter.