OB BioShield Classic (For Warranty)
OB BioShield Classic (For Warranty)
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) *1-Year Warranty on BioShieldUV Devices without a Guardian Club membership.
🚚 Need it fast? Choose 2-Day Express Delivery at Checkout. Order within 11:17:53 to receive by Monday View full detailsIs It Safe?
Yes. BioShieldUV™ is CE, FCC, and RoHS certified and has been independently tested and verified by the EPA.
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 by
Learn More About Our Certifications
Find the Right Model for Your Space
All BioShieldUV™ Classics deliver the same trusted protection, just scaled for different spaces. See how each model supports your unique needs.
Swipe to see all columns →Features
18W
36W
72W
Coverage Area
Smaller residential spaces
Medium residential spaces
Larger residential spaces
UV Power
18W
36W
72W
Included Drill
53mm Drill Bonus: $20 Value 
53mm Drill Bonus: $20 Value
70mm Drill Bonus: $25 Value
Replacement Bulbs
2 × 9W Lamps -
2 × 18W Lamps -
2 × 36W Lamps -
Minimum duct clearance
7" required
10" required
17" required
Rated 4.6 by over 100,000 families →
Backed by 90 day Clean Coil Promise™
Day 0 Day 90 Your BioShieldUV™ purchase is completely risk free.
BioShieldUV™ backs every purchase with the 90-Day Clean Coil Promise™. If there is no visible improvement after 90 days, you get:
- A full refund on your purchase price and shipping costs
- The unit is yours to keep (no return required)
We are the only UV-C company in the industry that offers this.
How It Works
Step 1 Take a photo of your evaporator coil and email it to [email protected] within 14 days of installation.
Step 2 Between Day 80 and Day 100, photograph your coil from the same angle and send it to [email protected]
Step 3 If there is no visible improvement, we process your full refund within 10 business days and the unit is yours to keep.
How the Leading Brands Compare
Swipe to see all columns →| Price | DIY Install | Safety Certified | Lifetime Warranty | Annual Bulb Cost | |
|---|---|---|---|---|---|
| BioShieldUV™ | $44 – $54 |  | CE, FCC, RoHS | | ~$20 (with Guardian Club) |
| Fresh-Aire UV | $207 – $1,122 |  |  Ozone only | | $48 – $57 |
| RGF REME HALO | $439 – $798 | | No RoHS/FCC | | $53 – $96 |
| Honeywell AirBRIGHT 6 | ~$534 | | No RoHS/FC | | ~$93 |
| Carrier UVCAP | ~$603 | | Ozone only | | Unknown |
| OdorStop | $200 – $225 |  | None | | $25 – $40 |
| VEVOR | $34 – $58 | | None | | Unknown |
| Coospider | $40 – $60 | | Not certified | | $15 – $30 |
Some brands do not publish replacement pricing publicly. Contact your brand directly to confirm ongoing bulb or cell costs before purchasing.
Shop BioShieldUV™ ProductsDIY-Friendly by Design
Average installation time: 15 minutes
Step 1: Prepare the Surface
Place the installation template on the desired surface (wall, ceiling, or HVAC panel) and secure it with painter’s tape. Drill two holes using the circular drill bit specified in the manual.
Step 2: Insert the Bulbs
Carefully insert the UV bulbs into the drilled holes, ensuring they are aligned and fit snugly without applying force.
Step 3: Secure the Assembly
Attach the metal bracket over the bulbs and fasten it tightly with the provided screws to keep the assembly stable.
Step 4: Connect and Test
Connect the adapter to the bulb assembly, plug it into an AC socket, and verify the ON indicator light to ensure proper connection.
Detailed installation guide & template included in the kit
Backed by the Clean Coil Promise™ - guaranteed visible improvement in 90 days.
Watch Installation Video
Buy NowNever Miss a Replacement with Guardian Club
Guardian Club automatically ships you a replacement lamp every 10 months. Members receive 10% off replacement bulbs, automatic warranty coverage, and hassle-free delivery every cycle.
All replacement bulbs include a 14-day warranty from the date of delivery. Guardian Club members receive extended coverage of up to 6 months from delivery.
Free to join. Ships automatically. Keeps your warranty active. Join The Guardian Club Order Replacement Bulbs
With Guardian Club Without Guardian Club Bulb replacement Automatic every 10 months Manual, when you remember Bulb pricing 15 percent off every order Standard rate Bulb guarantee 6 months 14-day DOA only Unit warranty Lifetime 1 year With Guardian Club Without Guardian Club Bulb replacement Automatic every 10 months Manual, when you remember Bulb pricing 15 percent off every order Standard rate Bulb guarantee 6 months 14-day DOA only Unit warranty Lifetime 1 year Learn more about Guardian Club How UV-C Works
01Germicidal Protection
UV-C light at 253.7nm irradiates the coil surface 24 hours a day, disrupting microbial DNA and preventing biological growth from establishing.
02Biofilm Eliminated
Dead biological matter washes away naturally with condensate during normal cooling cycles, restoring airflow and heat transfer progressively.
03Efficiency Restored
With fouling removed, the coil transfers heat as designed, draws less energy, and maintains consistent airflow without intervention.
Learn More