Mold Guard


Mold Guard


  • Purify the air: reduce certain microorganisms, odors, PM2.5, mold spores, and more
  • Surfaces: reduce certain viruses, bacteria, and mold on hard surfaces
  • Safe & Hypoallergenic: No synthetic chemicals, no deodorizers, non ozone producing
  • Proprietary Tech: Hypoallergenic Air® Polar Ionization
  • Upgraded Fan:Now with dual ball bearing fans to provide increased power and more resilient longevity

CARB Certified under Air Oasis, with EO Number+ G-19-212

SKU: MG-100 Category:


The Latest in Natural Air Quality 

The Mold Guard provides active purification of the air and reduces certain microorganisms on surfaces with no replacement parts for life.†  

Coverage Estimate: 100 sq. ft. †
Energy Use: Less than a lightbulb (2 watts)
Replacement Parts: zero for product life
Extremely compact design: 6.5" x 4" x 1.5"
Installation: Plugs directly into the outlet, no messy wires
Filters: Comes with washable black sponge filter.  Optional Replaceable Carbon Filters can be purchased in the future
Plugs: Currently only USA style plugs are available.  Accepts all voltage types from 100-240
Zero Ozone: Intertek tested 8 hr TWA Ozone for this product is 0.000 ppmv when tested in a 30 m3 chamber
CARB Certified: ships worldwide

I don’t sneeze randomly anymore.

Erickson D., verified customer

"It’s small!  Very easy to use. Just plug it and then that’s it! ...the filter-less tech like [polar ionization] is such a breakthrough that I didn’t expect to be this effective...

Really Positive

Aaron B., verified customer

"We live in a very humid location during the summer time and know the dangers of mold. This was most important in making a decision to find a legitimate air purifier.  Installed device in our bedrooms and noticed window mold from moisture reduced to completely gone within 2 weeks. Noticed overall freshness of air in purified rooms."    

I am very satisfied with them

Jacque R., verified customer

"The air is lighter and the room actually “looks” clearer! You can really feel the difference... the value is incredible for the technology you get.... It gives me peace of mind."


Vanessa P., verified customer

"In Houston there is a lot of pollution (as it is worldwide), but to know inside my home it's safer, especially during this pandemic,  is a peace of mind.  Get it. You can't even hear it, you just plug it in and forget it's even there.  It emits a white noise the sound, which inreally like. It's soft, and you really almost forget it's even in the room! I have 1 in my bedroom, 1 in my kitchen, and 1 in my guest bathroom. I live in a townhome, so these are perfect. If I could get them again, I definitely would!! To know the air is being purified by such a small plug in product, is incredible."

Gives us the ability to travel

Mary C., verified customer

My husband and I have severe mold reactions, and with these two models [Mold Guard & Air Angel] we’re able to easily take them with us to use when we travel. I love being able to use the air angel in the car as well. These have been incredible in helping us heal.  For us, mold sensitivity impairs many aspects of our lives, and this gives us the ability to travel and clean up the air in hotel rooms so that we are not sick for entire trips."

Our newest purification unit

The Mold Guard was designed to make purifying rooms & naturally suppressing microorganisms easy and accessible.† Place it anywhere you want to breathe fresh, clean air and enjoy surfaces with far fewer microorganisms.†   Covers a single room up to 100 sq. ft. with no replacement parts for life.† Used in operatories, medical facilities, and homes. Download the Owner's Manual here

Compact, but powerful

The Mold Guard air purifier blends in nicely with household décor. And it delivers a powerful punch to unwanted contaminants.  It effectively and safely addresses unwanted contaminants such as allergens, mold, dead mold spores, bacteria, viruses, and odors.† 

Washable Pre-Filter

Every Mold Guard includes a washable pre-filter that never needs to be replaced.

Optional HEPA & Carbon

Optional H13 HEPA & Carbon Filtration can be purchased for added power

Optional H13 HEPA + Carbon Filters are available for the Mold Guard (MG-100) air purifiers. These filters provide additional particulate control (H13 HEPA) and odor/chemical control (Activated Carbon), helping to optimize their efficacy. For best results, we recommend replacing these filters every 1-3 months.

During installation, make sure to insert the HEPA side of the filter facing up or outwards, while the darker carbon side should face down or inside the unit. This allows the HEPA to capture particles first, with the carbon absorbing VOCs afterward. These filters can be purchased as a bundle with your Mold Guard, or they can be ordered separately here.

† Third-party testing indicates that devices with the Polar Ionization™ technology have proven effective at helping reduce Mold, Bacteria, PM2.5, SARS-CoV-2, E. Coli, MRSA, C. Difficil, VRE, TB (M Terrae), and more. These studies are often in controlled laboratory environments or through commercial 3rd party partners. Results will vary due to many real world variables including humidity, contamination concentrations and types, air flow, altitude, temperature, and more.

*The Mold Guard does NOT have the AHPCO® technology

†Coverage estimates are based primarily upon our 10+ years of experience with clients and their real world environment and goals. Various lab, third party, and real world studies have shown varying speed and efficacy in different room types and sizes. Recommended coverages are for average contamination levels in residential spaces. Results will vary due to many real world variables including humidity, contamination concentrations and types, air flow, altitude, temperature, and more. Please contact us for free consultations regarding more specific recommendations and information:

Our Technologies 

Most don't even claim to do what our technologies have been proven to accomplish.  Find out more about what makes us different, effective, and safe. 

Still have questions? 

All our purifiers come with a 30-day, no-hassle money back guarantee, and are covered under a 1-3 year warranty (depending on your unit).  HypoAir compact units cover very large areas of space.  We rate our units' strength by square footage (sq. ft) coverage.  These estimates are based on average contaminants found in a home.  Some situations like smoking, large pets, or environmental dangers like mold infestations may require a unit with more power than the size of the location may indicate.  

Additional information

Weight .5 lbs
Dimensions 2 × 2 × 2 in

Zero Light Version (MG-100N), With Night Light (MG-100L), Odor Control+ (3 pack of carbon filters) zero light, Odor Control+ (3 pack of carbon filters) with Night Light, Optional Carbon Filters (5 pack), Germ Defender sold separately, Quieter Germ Defender (75 ft2 Coverage) – Zero Light, MG-100N + 3 pack of H13 HEPA/Carbon Filters, MG-100N Six Pack Home Special, Buy 1 Get 1 Free (2 Pack of MG-100N), Buy 2 Get 1 Free (3 Pack of MG-100N), Family 12 Pack (MG-100N x 12), Mother's Day 4 Pack (MG-100N), 6 Pack with HEPA (MG-100×6+H13), 4 PACK of MG-100N plus Total Clean Starter Pack, Father's Day TWO Pack (MG-100Nx2), Mold Guard, Mold Guard + (3 pack of HEPA/Carbon filters), Mold Guard Six Pack, 2 for 1 Special


Zero Light, With Nightlight