*Free items included with 4-Pack order. While supplies last.
Professional CO Detection Device
Plug-In Carbon Monoxide Detector with a Live Digital Display
CO is invisible, odorless, and deadly.
AirShield is a plug-in carbon monoxide detector with a digital display for CO levels, temperature and humidity. Compare features and power requirements before you buy.
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FREE delivery by Thu, Oct 22 · Discreet packaging
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Real Stories|Real People
Verified purchases
What customers are saying
"I worked a fire department for years. Beep-only alarms were the bane of our existence — we never knew if it was real. The screen ends that."
— Marcus, retired firefighter
"Small price for the peace of mind. It's the one thing I won't travel without anymore."
— Verified buyer
"Checked into a hotel and the screen was already reading 113 PPM. Called the front desk — they found a cracked heat exchanger. A beep-only unit would've told me nothing."
— Verified buyer
"We take it in the RV and every Airbnb now. I sleep because I can glance over and see the air is fine."
— Verified buyer
What AirShield Gives You
Based on independent customer survey · 50,000+ respondents · 2024
Trusted by the People Who Know Carbon Monoxide Best
Doctors, firefighters & HVAC technicians.
"As an ER doctor I see CO poisoning cases every winter. AirShield is the first portable device I'd actually recommend patients keep on them — the real-time PPM reading is clinically meaningful."
"Most consumer CO detectors are reactive — they alarm when you're already in danger. AirShield is proactive. Seeing your live PPM lets you act before exposure becomes a health event."
"We respond to CO calls regularly. Most detectors only alarm at dangerous levels — AirShield shows the slow creep before it becomes a crisis. That early data saves lives."
UL Certified.
Third-Party Tested.
Independently Validated.
Every AirShield device is UL 2034 certified — the highest US safety standard for CO detection. Our electrochemical sensor technology is independently lab-tested and validated, ensuring it performs accurately when your family's safety depends on it.
Results based on an independent customer survey · 50,000+ respondents · 2024
Inside Every Device
What's Inside AirShield
Clinical-grade sensor technology. Professional accuracy. The exact components that separate real protection from a false sense of security.
Based on independent lab testing and published UL 2034 standards · Data on file
One device. Every environment.
Every threat covered.
Most detectors are fixed to one wall. AirShield goes wherever you do — and protects you in every space that matters.
Carbon monoxide from furnaces, gas stoves, fireplaces, and attached garages has no color or smell. AirShield monitors continuously — your family gets a warning before symptoms even begin.
The New Standard
in CO Safety
See how AirShield compares on sensor accuracy, detection range, and real-world protection.
CO Alarm
UL 2034 certified sensor technology · Independent lab data on file · 2024
Meet the Experts Behind
AirShield's Safety Standards
Our safety advisory panel includes emergency medicine physicians, certified fire inspectors, and environmental health scientists — the people who see CO's danger firsthand.
"As an ER doctor I see CO poisoning cases every winter. AirShield is the first portable device I'd actually recommend patients keep on them — the real-time PPM reading is clinically meaningful, and the electrochemical sensor gives results you can trust."
Homeowners, Travelers, Parents,
First Responders — and 50,000+ Protected Families.
50,000+ Homes Protected · 4.8/5 Average Rating
"I recommend AirShield to every patient living in an older home."
"The 85 dB alarm is the real deal — it will wake you up."
"Electrochemical sensors are the gold standard — nothing else comes close."
"CO poisoning is misdiagnosed constantly. AirShield gives people real data."
Customer Reviews
What Our Customers Say
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Risk-Free
Use it, or get your money back.
Ninety days to experience real protection in your home, hotel, or RV. If you're not completely satisfied — for any reason — we'll refund every cent. No questions, no hassle.