Standard Pre-Filter
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Standard Pre-Filter
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Shipping Information
If your order is placed by 1 pm EST Monday through Friday, we strive to ship on the same business day. Please note, our offices are open Monday through Thursday from 8 am to 5 pm EST and Friday from 8 am to 2:30 pm EST. Orders placed on the weekend will ship on Monday.
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FAQ’s
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Keep your Austin Air purifier running like new with a genuine standard large particle prefilter replacement, available in black or white to match your unit. This essential first-stage filter captures visible airborne particles like dust, hair, pet dander, and other debris — preventing them from clogging your main filter and compromising performance.
Swapping out your prefilter regularly not only boosts airflow and energy efficiency, but also extends the life of your main filter, saving you money in the long run.
- White prefilter is designed for White and Sandstone units
- Black prefilter is designed for Black, Graphite, and Midnight Blue units
Fits These Austin Air Models:
All Standard Size Austin Air Purifiers, including:
- Austin Air HealthMate
- Austin Air HealthMate Plus
- Austin Air Bedroom Machine
- Austin Air Allergy Machine
- Austin Air Immunity Machine
(This prefilter does not fit Junior models or the Austin Air "it")
What This Prefilter Removes:
- Large dust particles
- Pet hair and dander
- Carpet fibers and lint
- Pollen clumps
- Other visible airborne debris
Why Replace Your Prefilter?
- Protects your main filter from early wear
- Improves airflow and performance of your Austin Air unit
- Maintains cleaner, healthier air in your home
FAQs
Please read our FAQs page to find out more.
What does this prefilter actually do?
The prefilter captures visible airborne debris like dust, pet hair, lint, and dander before it reaches your main filter. This protects your unit and helps it run more efficiently.
How do I know which filter size I need?
Check the label on your Austin Air unit — standard units begin with HM4 (like HM400), junior units start with HM2 (like HM200), and the personal "it" units are smaller and labeled accordingly. You can also measure your unit or use our “Help Me Choose” tool.
Does this come with the full filter?
No — this is a replacement prefilter only, designed to pair with your existing Austin Air main filter. It’s the first stage of your purifier’s 4-stage system.
How do I choose the right color?
Choose white if your unit is White or Sandstone, and black if your unit is Black, Midnight Blue, or Graphite. This helps it blend in with your purifier’s exterior grille.
Which models does this prefilter fit?
This prefilter fits standard-size Austin Air units only — including the HealthMate, HealthMate Plus, Bedroom Machine, and Allergy Machine. It does not fit Junior or Personal models.
Customers are saying
HealthMate
The Austin Air HealthMate is often called the “asthma air purifier” because it’s clinically proven to help reduce asthma symptoms and lower asthma-related emergency room visits, according to studies conducted at major U.S. hospitals. This powerful, medical-grade air purifier removes harmful respiratory triggers — including particles, mold, mycotoxins, allergies, pet dander, dust, chemicals, bacteria, viruses, and more. With its durable steel construction and a massive filter designed to last FIVE years, it’s the top choice for those with breathing conditions and anyone who wants reliable, long-term protection.