BioShieldUV® Magshield™
BioShieldUV® Magshield™
Previously known as BioShieldUV® Magnetic
Lab-proven to eliminate over 99% of mold and bacteria inside your HVAC system.
Trusted by 10,000+ families nationwide
Free shipping across the United States
Lifetime Warranty* (with the Guardian Club only) Free Returns (Within 90 Days) Certified Safe by CE, ETL**, RoHS, & FCC Clean Coil Promise™ (90-Day Visible Results or Full Refund) Removes Mold and Bacteria *1-Year Warranty on BioShieldUV Devices without a Guardian Club membership.
🚚 Need it fast? Choose 2-Day Express Delivery at Checkout. Order within 11:21:30 to receive by Monday View full detailsCleaner Coil in 90 days, Or Your Money Back.
Day 0 Day 90 Your BioShieldUV™ purchase is completely risk free.
Every purchase is backed by CoilPledge™. If your coil is not visibly cleaner after 90 days of operation, we will refund your full purchase price along with return shipping, and the unit is yours to keep.
We are the only UV-C company in the industry that offers this guarantee.
Learn More About The Clean Coil PromiseHeld to the Highest Safety Standards
>99% Mold Elimination
(Aspergillus niger)
>99.999% Bacteria Elimination
(Staphylococcus aureus)
* 1 hour exposure with biological soil on Bioshield’s TruBlu™ Bulbs
MagShield™ was tested at Intertek Columbus Microbiology Laboratory, one of America’s most trusted independent testing authorities.
View Full Lab Test ReportIs It Safe?
Yes. BioShieldUV®'s ozone output measures at 0.014 ppm, well below every relevant safety standard.
Lowest Highest BioShieldUV™ output 0.014 ppm Completely Safe FDA and CARB 0.050 ppm EPA NAAQS 0.070 ppm OSHA permissible limit 0.100 ppm Remember: Not every UV-C system on the market operates at a safe wavelength. If you are evaluating other brands, check to see if they use 185 nm lamps, as these generate ozone as a byproduct and are not safe for residential use.Certified to Protect Your Home
Safe to run 24 hours a day
ETL Listed under UL 60335-2-40 for continuous operation. Applies to 18W and 36W models only.
Proven to work on real mold
ASTM E3135 lab tested at Intertek Columbus.
Free of harmful materials
RoHS compliant with no restricted hazardous substances inside the device.
Doesn’t disrupt your smart home
FCC certified so your WiFi, thermostat, and other electronics stay unaffected.
Meets Global safety standards
CE marked to the stricter European safety benchmarks.
Tracked from factory to your door
EPA Establishment Number on file with full batch-level traceability.
See All CertificationsHow MagShield™ Compares
Swipe to see all columns →| BioShieldUV™ | Fresh-Aire UV | RGF REME HALO | Honeywell RUVLAMP1 | VEVOR | Coospider | |
|---|---|---|---|---|---|---|
| Price | $44 | $207 | $439 | ~$534 | $34 | $40 |
| DIY Install | Yes; all tools included in the box | Contractor required | Contractor required | Yes | Yes | Yes |
| Safety Certified | CE, FCC, RoHS, ETL (18W/36W) | Not disclosed | Only UL Listed | Only UL Listed | Not disclosed | Not disclosed |
| Lifetime Warranty | Yes, with Guardian Club | Yes; lifetime on parts | 5-year limited | 1-year limited | Not Disclosed | Not Disclosed |
| Lab-Verified Kill Data | Yes; ASTM E3135, Intertek Columbus | Yes; independent lab tested | Yes; third-party test data available | No lab report published | Not Disclosed | Not Disclosed |
| Annual Bulb Cost | ~$20 with Guardian Club | $48 | $53 | ~$93 | Variable | 5 |
Easy Installation in Minutes
Average installation time: 15 minutes 
1: Choose the Location
Select your ideal spot with access to the air duct. Make sure you have at least 14" of duct length for optimal performance.
2: Mount Your Unit
Clean the surface and place the magnetic mount. The strong magnetic base ensures a secure, stable fit.
3: Power Your System
Wall Adaptor: Plug the 120V adaptor into your wall outlet & attach to the BioShield unit on other end.
HVAC integration: Requires wired connection with your central air system’s HVAC ballast directly.
4: Power On
Turn on the unit and confirm the indicator light is illuminated, verifying proper operation and a secure magnetic hold.
View The Full Installation GuideWatch Installation Video
Join 5,000+ successful installations Find Your Perfect Fit, Hassle-Free
Compare HVAC integration versus direct plug-in to match your unique needs.
Swipe to see all columns →Features
Wall Adaptor
HVAC 24v AC Ballast
Installation
Easy & DIY-friendly – plug & play
Cleanest installation – but requires wiring to HVAC ballast
Power Source
Wall Adaptor – ensure there’s a wall socket nearby
Directly powered by HVAC
Setup Time
10 mins (approximately)
10-45 mins
Special Features
Bulb Working Indicator present on unit
View Port & Drill Bit included (optional install)
$53.97 Free shipping Add to Cart $52.17 Free shipping Add to CartAmerican-Owned & Independently Tested
BioShieldUV™ was created for homeowners who wanted more than marketing claims and generic warranties.
Every unit is independently tested by a certified U.S. microbiology lab to verify real-world performance, then backed by warranty protection designed to give long-term peace of mind.
- Headquarters: Cheyenne, Wyoming
- Independent testing: Intertek Columbus Microbiology Lab, Columbus, Ohio
™ All U.S. trademarks on file
Enroll for free with the Guardian Club
- Replacement bulbs shipped automatically every 10 months, at 15% off
- Lifetime Warranty on your BioShieldUV unit
- 6-Month Warranty on your TruBlu bulb
No commitment — cancel anytime.
Real Verified Customer Reviews
Loading reviews...BioShieldUV® Magshield™
$74.97
18W / Wall Plug
(with guardian club)