The Austin Air HM 400 line of replacement HEPA filters are available for all 5 standard air purifiers. These filters are all interchangeable between units and are covered by a FULL 5 YEAR Pro-Rated Warranty by Austin Air.

The Austin Air HealthMate Filter is constructed using a true medical grade HEPA filter surrounded by a carbon/zeolite mixture capable of removing the tiniest of particles and absorbing odors and gases. The Austin Air HealthMate HM 400 Filter uses the HEPA to remove up to 99.97 percent of all particles down to 0.3 microns in size and 95 percent down to 0.1 micron.

The Austin Air HealthMate Plus filter has all the design features as the standard HealthMate Filter with an additional additive of potassium iodide. This mineral combined with the activated carbon and zeolite, allows for greater removal of chemical gases, or Volatile Organic Compounds (VOCs), thus improving relief for people with chemical sensitivities. It is recommended for people who have heavy air quality problems and those that are chemical sensitive.

The Austin Air Allergy Machine HEGA filter uses a military designed carbon cloth (HEGA or high efficiency gas absorption) for removing odors and gases. The Austin Air Allergy Machine HEGA Filter combines this cloth with a true HEPA filter to trap airborne particles, including dirt, lint, and hair. This combination removes and absorbs the smallest of airborne particles and chemical gas contaminants. Harmful airborne particles are removed 99.97% of the time for particles as small as 0.3 microns and 95% for minute particles down to .1 microns.

The Austin Air Pet Machine Filter has a true medical HEPA filter surrounded by a carbon/zeolite mixture which eliminates particulates and absorbs odors and gases. This proprietary blend removes ammonia and the many irritants associated with indoor pets. The HEPA filters 99.97 percent of all particles down to 0.3 microns in size.

The Austin Air Bedroom Machine Filter is the best overall protection and particulate Austin Air Filter ever made. It is specifically designed to give you and your family better night sleep. Contains a 5 stage filtration system consisting of a HEGA carbon cloth, large particle pre-filter, medium particle pre-filter, proprietary carbon mixture, and finally a HEPA filter.