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MicroClimate Air3 replacement filters
$99.00
Final price set by Amazon · may vary
EDITORIAL REVIEW: 4.4/5 WC Safety Review — the MicroClimate Air3 replacement filters Editorial assessment by the WC Safety Editorial Team, based on published MicroClimate specifications and category fit. We did no...
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EDITORIAL REVIEW: 4.4/5 WC Safety Review — the MicroClimate Air3 replacement filters
Editorial assessment by the WC Safety Editorial Team, based on published MicroClimate specifications and category fit. We did not laboratory-test this product.
MicroClimate Air3 Replacement Filters Overview
The MicroClimate Air3 replacement filters are HE P100-rated (NIOSH magenta label) particulate filters, capturing 99.97% of particulates down to 0.3 microns. As a MicroClimate Air3 P100 filter set, they're sold as a matched pair for the Air3 PAPR system.
Safety note: these are particulate filters only - they do not filter organic vapors, acid gases, or other chemical vapors. NIOSH approval applies to the complete assembled Air3 system - blower, battery, and filter together - not to this filter sold alone. This is not a supplied-air or SCBA component and does not make a PAPR suitable for IDLH or oxygen-deficient atmospheres.
The Air3 Side A Side B filters each include a MicroClimate Air3 filter spark arrestor and outlet filter. As a NIOSH HE P100 PAPR filter, they offer over 600 square inches of surface area to reduce air velocity through the media, improving capture efficiency and helping extend battery life. Follow the MicroClimate Air3 filter replacement schedule for your work environment. See our what is a PAPR guide for how filters fit into the overall system, our respirator filter types explained guide for how particulate filters differ from gas/vapor cartridges, and our what is NIOSH guide for background on the P100 rating.
What It Is Built For
| Use case | Fit | Buyer guidance |
|---|---|---|
| Replacement filters for the MicroClimate Air3 | Strong fit | Confirm your PAPR model matches before ordering. |
| Fine particulate protection (dust, mist, fume) | Strong fit | HE P100 rating captures 99.97% down to 0.3 microns. |
| Grinding or nearby spark exposure | Strong fit | Integrated spark arrestors on each filter. |
| Gas or vapor exposure | Not suitable | Particulate filter only - no gas/vapor cartridge option identified. |
Pros & Cons
Pros
- HE P100 rated, 99.97% capture down to 0.3 microns
- Integrated spark arrestors on each filter
- Large surface area (600+ sq in) for extended battery life
- Tool-free replacement
Cons
- Particulate filtration only - no gas or vapor protection
- Specific to the MicroClimate Air3, not cross-compatible
- Filter alone does not provide respiratory protection without the complete system
- Consumable item requiring periodic replacement
How It Compares
For the complete blower and headgear system these filters are designed for, see the MicroClimate Air3 powered respirator. Browse the full PAPR respirator filters collection for other manufacturer-specific options, and see our best PAPR respirator systems guide and NIOSH vs OSHA breakdown for broader context.
Specifications
| Brand / Model | MicroClimate AIR3-FILTER |
| Rating | HE P100 (NIOSH magenta), 99.97% at 0.3 microns |
| Set contents | Side A + Side B filters with integrated spark arrestors |
| Surface area | 600+ sq in |
| Compatible system | MicroClimate Air3 PAPR |
Related Respiratory Protection Resources
PAPR respirator filters powered air-purifying respirators what is a PAPR respirator filter types explained best PAPR respirator systems OSHA 1910.134 respiratory protection how long do respirator cartridges last MicroClimate Air3 powered respirator
Frequently Asked Questions
What is the filtration rating of these replacement filters?
HE P100 (NIOSH magenta label), capturing 99.97% of particulates down to 0.3 microns - the highest NIOSH particulate filtration class.
What comes in this replacement filter set?
A Side A and Side B filter set for the MicroClimate Air3, each with integrated spark arrestors and outlet filters designed to work together as a matched pair.
Do these filters protect against organic vapors or gases?
No. These are P100 particulate filters only. They do not filter organic vapors, acid gases, or other chemical vapors - MicroClimate has not published a separate gas/vapor cartridge option for the Air3 that we found.
How do I install these filters?
MicroClimate designs the Air3 for tool-free filter replacement, letting you swap the Side A and Side B filters without additional hardware. Follow the manufacturer's manual for the exact installation steps. See our how long do respirator cartridges last guide for general service-life planning.
How often should I replace the filters?
Follow MicroClimate's stated replacement schedule for your specific work environment, and replace sooner if you notice reduced airflow, visible clogging, or physical damage to the filter media.
What is the spark arrestor built into the filter for?
The integrated spark arrestor helps protect the filter media from sparks and hot debris, which is relevant for tasks like grinding or nearby welding work where the Air3 might be used.
Why does filter surface area matter?
MicroClimate states over 600 square inches of surface area on these filters, which reduces air velocity through the media. Lower velocity through more surface area can improve capture efficiency and help extend battery life on the blower.
Is this filter NIOSH approved on its own?
NIOSH approval applies to the complete assembled Air3 PAPR system - blower, battery, and filter used together as tested - not to the filter as a standalone component sold separately.
Are these filters compatible with other PAPR brands?
No. These replacement filters are specifically designed for the MicroClimate Air3 system. Confirm your PAPR brand and model before ordering, since PAPR filter systems are generally not interchangeable across manufacturers. See our best PAPR hoods and headtops guide for how different systems compare.
What happens if I use a damaged or clogged filter?
A damaged, clogged, or degraded filter can reduce airflow and the system's effective protection factor. Inspect filters regularly and replace them per MicroClimate's guidance rather than continuing to use a filter that shows visible damage or reduced airflow.
Can these filters be cleaned and reused?
PAPR particulate filters are generally designed as replaceable service items rather than washable, reusable components. Follow MicroClimate's specific care and replacement instructions rather than assuming these filters can be cleaned and reused indefinitely.
Do I need a written respiratory program to use the Air3 and its filters?
Yes. Powered air-purifying respirators are used within a written respiratory protection program under OSHA 29 CFR 1910.134, including training and maintenance, even for NIOSH-approved loose-fitting units like the Air3 that don't require fit testing. See our OSHA 1910.134 respiratory protection guide for the full requirements.
Written by Steven Eaton, WC Safety Editorial — respiratory protection desk. Filter rating and compatibility independently verified against MicroClimate's official product page. Compare the range in PAPR respirator filters.
WC Safety is an independent PPE retailer; no paid placement. Confirm system compatibility before ordering, and follow MicroClimate's stated replacement interval.
Brand / Vendor
MicroClimate
Model / SKU
AIR3-FILTER
Product Type
PAPR Filters & Cartridges
Price
$99.00 (Amazon)
Availability
Check current availability on Amazon
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