Austin Air HealthMate HM400 Air Purifier
The Austin Air HealthMate HM400 Air Purifier is a dependable, low-maintenance solution for improving everyday indoor air quality in homes, offices, and other indoor spaces between 1,000 and 1,500 square feet.
Its four-stage filtration system combines particle pre-filters, activated carbon, zeolite, and True Medical Grade HEPA filtration to help remove dust, pollen, pet dander, mold spores, chemicals, gases, odors, bacteria, viruses, and other airborne contaminants.
Designed for continuous operation, the HealthMate can run all day to provide cleaner air with minimal upkeep. Under normal residential use, its filter is designed to last up to five years, helping reduce the expense and inconvenience of frequent filter replacements.
Austin Air has manufactured air purification systems in the United States for more than 30 years. The HealthMate remains one of its most popular models for individuals and families seeking reliable protection from common indoor pollutants.
Austin Air HealthMate HM400 Air Purifier Features
- Recommended coverage: Ideal for indoor areas between 1,000 and 1,500 square feet.
- Everyday pollutant protection: Helps remove dust, pollen, pet dander, mold spores, airborne particles, chemicals, gases, and odors.
- Microorganism filtration: Designed to filter airborne bacteria and viruses.
- Four-stage filtration: Uses multiple filtration technologies to address particles, allergens, chemicals, volatile organic compounds, gases, and odors.
- Long filter life: The filter is designed to last up to five years under normal residential use.
- Minimal maintenance: Routine care generally involves vacuuming the exterior of the purifier approximately once per month.
- Continuous operation: The high-efficiency motor is designed for continuous use at high RPM.
- Three fan speeds: Choose the appropriate airflow level for your room and air quality needs.
- 360-degree air intake: The perforated steel housing draws air into the purifier from all sides.
- Durable construction: Features a baked-on powder coat finish designed to prevent paint-related off-gassing.
- Made in the USA: Austin Air manufactures its air purifiers in the United States.
- Safety certification: CSA/NRTL approved and independently tested to meet recognized safety and performance standards.
Austin Air HealthMate HM400 Four-Stage Filtration System
- Stage 1: A large-particle pre-filter helps capture visible contaminants such as dust, hair, and pet dander.
- Stage 2: A medium-particle pre-filter helps remove small to medium-sized particles, including mold spores and pollen.
- Stage 3: More than 780 cubic inches of activated carbon and zeolite help adsorb chemicals, volatile organic compounds, gases, and odors.
- Stage 4: Sixty square feet of True Medical Grade HEPA material removes 99.97% of particles larger than 0.3 microns and 95% of particles larger than 0.1 microns.
The filtration system is designed to provide comprehensive protection from both airborne particles and gaseous contaminants. Replacement is made easier with instructions provided in the owner's manual.
View the Austin Air HealthMate Replacement Filter.

Austin Air HealthMate HM400 Health and Air Quality Benefits

- Airborne contaminant reduction: Helps reduce airborne pollutants that may affect indoor air quality.
- Allergen removal: Helps capture allergens that may contribute to nighttime allergy or asthma symptoms.
- Cleaner breathing environment: Helps reduce exposure to dust, pollen, pet dander, mold spores, and other airborne irritants.
- Respiratory comfort: Cleaner indoor air may help ease irritation associated with coughing, wheezing, sneezing, dry mouth, or a runny nose.
- Improved sleeping environment: Continuous filtration can help create a cleaner and more comfortable bedroom environment.
- Home and office use: Suitable for families, individuals with airborne sensitivities, and workplaces concerned about indoor air quality.
Austin Air HealthMate HM400 Clinical Study Information
- Childhood asthma study: The HealthMate was selected for a clinical trial at Cincinnati Children's Hospital Medical Center involving children with asthma who were regularly exposed to secondhand smoke. Results reported that running Austin Air purifiers in the children's bedrooms while they slept reduced hospital visits by nearly 20%. Read the childhood asthma study.
- COPD study: Austin Air HealthMate purifiers were used in a Johns Hopkins University clinical study involving 116 former smokers with moderate to severe COPD. Participants were followed for six months, and the group using functional HealthMate air purifiers showed evidence of improvement. Read the COPD study.
Austin Air HealthMate HM400 Air Purifier Specifications
- Model: HM400
- Recommended room size: Approximately 1,000 to 1,500 square feet
- Dimensions: 23 inches high x 14.5 inches wide x 14.5 inches deep
- Weight: 47 lbs.
- Air intake: 360-degree perforated steel intake housing
- Exterior finish: Baked-on powder coat paint
- Fan speeds: Three
- Motor: High-efficiency motor rated for continuous use at high RPM
- Power requirements: 1.2 amps, 120V, and 147 watts on the high setting
- Rated fan airflow: 75 CFM on the lowest setting to 400 CFM on the highest setting
- Noise level: Approximately 50 dB to 62 dB
- Particle filtration: Removes 99.97% of particles larger than 0.3 microns and 95% of particles larger than 0.1 microns
- HEPA surface area: 60 square feet of True Medical Grade HEPA material
- Carbon and zeolite capacity: More than 780 cubic inches
- Filter life: Up to five years under normal residential use
- Country of manufacture: Made in the USA
- Certification: CSA/NRTL approved

Austin Air HealthMate HM400 Warranty Information
- Mechanical warranty: Five-year warranty against defects in materials and workmanship from the date of purchase, provided the purifier is operated under normal residential use and the warranty registration is completed and returned to Austin Air Systems.
- Filter warranty: Five-year prorated filter warranty for filters used under normal residential conditions.
Austin Air HealthMate HM400 Downloads
- Owner's manual: Download the Austin Air HealthMate Air Purifier Owner's Manual
- Technical specifications: Download the Austin Air HealthMate Air Purifier Technical Specifications
Improve your indoor air quality with the powerful four-stage filtration and dependable performance of the Austin Air HealthMate HM400 Air Purifier.
Order the Austin Air HealthMate HM400 today and enjoy cleaner, fresher air throughout your home or office.
Order Processing: Once you place your order, you'll receive an order confirmation email. Please allow 1-3 business days for processing. If there are any unexpected delays, we’ll reach out to you immediately.
Shipping Methods:
- Standard Shipping: Small items ship with UPS, FedEx, or USPS. They usually do not need a delivery signature.
- Freight Shipping: Large or heavy items ship with a box truck to your curbside or loading dock. They will schedule a delivery appointment when the shipment is in your area.
Delivery Timeline:
- Processing: Please allow 1-3 business days for us to process your order in our system.
- Handling Time: This product should ship out in days from the time it is processed.
- Transit Time: Ground orders take 1-5 business days. Freight shipments may take 3-10 business days, depending on your location.
- Delivery Appointment: For freight deliveries, the carrier will contact you to set a delivery time. Someone must be present to receive the delivery.
Receiving Your Shipment: Inspect your shipment for damage before signing the delivery receipt. For any issues, mark “DAMAGED, NEEDS REVIEW,” take photos, and contact us within 2-3 business days.
Warranty Information:
We’re an authorized dealer; all products include the original manufacturer’s warranty. See product details for coverage specifics.
Questions or a claim? Contact us or the manufacturer for assistance.
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