The Only CO Detector That Protects Your Baby, Elderly Parent, and Vulnerable People that Standard Ones Ignores
AirGuard™️Carbon Monoxide Detector 2.0
# 1
BESTSELLER OF 2025
The Best Quality Money can Buy!
- ⚡ Detects danger days before standard alarms
- 👶 Protects babies, elderly & Individuals with respiratory conditions
- 🔌 Plug in anywhere — works in seconds
- 🔬 Medical-grade sensor — lasts 10 years
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Does Your Home Have A Hidden CO Risk?
Answer these questions:
Do you have an attached garage? Every time you start your car, CO seeps through shared walls. Silently. While your family sleeps.
Is your home older than 15 years? Furnace heat exchangers crack over time. They leak CO for months before anyone gets sick enough to notice.
Do you use natural gas, propane, or oil heat? One blocked vent. One crack. One malfunction. That's all it takes, and your current detector won't say a word until it's fatal for your kids.
Do you have a baby, elderly parent, or someone with a respiratory condition at home? Your detector's own manual says it wasn't built to protect them. Not our words, theirs.
If you said yes to even ONE of these, your detector is likely hiding something right now. You just can't see it.
Stories that Started The Movement
Diane Moore,
39
Verified Buyer
I had no idea I even needed this. I'd been feeling off for a while, headaches, tired all the time, just not myself, and a friend offhandedly mentioned she'd had something similar and it turned out to be the air in her house. I almost brushed it off. I'm so glad I didn't. There was a leak I never would have found on my own. My old detector was sitting right there on the wall showing nothing. I didn't even know detectors could miss things like that. I cried a little when I figured it out, honestly. Not from fear, just relief that I finally had an answer.
Michelle L,
38
Verified Buyer
I'd spent weeks researching before I bought this. I knew I wanted something that actually showed me numbers, not just an alarm that goes off when it's already too late. What I didn't expect was how quickly it would prove itself. Three weeks in, it flagged a reading our old detector completely ignored. I stood there staring at the screen at 2 AM thinking about how long that had been going on. I feel so much more at ease now knowing exactly what we're breathing. This isn't just a gadget. For me it's genuine peace of mind.
Dennis Allen,
64
Verified Buyer
I'm an HVAC technician with 35 years in the industry. After one bad call, I tested my neighbors' detectors with my professional $400 CO tester. Out of 6 houses, FIVE had detectors that were either dead or wouldn't alarm until you were already dying. I urged each one of them to use the detector I use, which is TrueDetect. It alarms early when you can still get out safely, shows real CO readings, and monitors the same metrics I check on service calls. I highly recommend this one, even over the “advanced” 200$ ones
Jessica Lawson,
46
Verified Buyer
Our CO detector was installed in 2013. Twelve years with a green light, and it never crossed my mind to question it, until I had my third.
A newborn changes the way you think about everything. I looked into it and found out CO detectors expire after 5-7 years. Ours had been useless for half a decade and I had no idea.
So I switched to AirGuard. Three weeks later, it went off. A slow CO leak from the furnace, the kind that builds quietly over days. The kind my old detector would have never caught.
I keep thinking about what would have happened if I never bought AirGuard. If you have little ones at home, please don't wait.
57% of CO Poisoning Victims Had "Working" Detectors That Never Went Off. Don't Let This Be Your Family.
Most CO detectors are built to a legal minimum. They won't wake you up until levels hit 70 PPM or higher. That's not protection. That's damage control.
Even worse? That detector has a 5–7 year lifespan. After that, the sensor dies, but the green light stays on. You have no way of knowing. You just trust it. Every single night.
That's why CO poisoning still sends 50,000 Americans to the hospital every year, despite the majority of homes having detectors. The detector didn't fail. It did exactly what it was designed to do. The design just wasn't built for you.
AirGuard is different. It triggers at 30+ PPM, hours before CO reaches levels your current detector would even register. Your family gets time to get out. Not time to get sick.
And since most CO leaks start with your furnace, AirGuard also displays the temperature and humidity inside your home, the same readings HVAC technicians check on every service call.
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Why ChooseUs?
Here's how we Guard your Air.
Why ChooseUs?
Here's how we Guard your Air.
AirGuard
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CO Detection
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Early Detection
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Triple Environment Monitor
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10 year Industrial LifeSpan
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Money-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
BUY NOW
100% Satisfaction
Fast Shipping
Easy Returns
Money-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
BUY NOW
100% Satisfaction
Fast Shipping
Easy Returns
Frequently Asked Questions
Find your answers to common questions about the Airguard & more.
How Many AirGuard Units Do I Need?
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For best protection, we recommend placing AirGuard detectors:
- On every level of your home
- Near sleeping areas
- Near fuel-burning appliances
General Recommendation:
- 1 Unit — Apartments & small spaces
- 2 Units — Most 1–2 story homes
- 3 Units — Multi-story homes
- 4 Units — Large homes & properties
What Should I Do If My AirGuard Isn’t Working?
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If your AirGuard isn’t working properly, don’t worry — we’re here to help.
First, we recommend:
- Checking that the device is plugged in correctly
- Ensuring it's placed in a suitable location
- Reviewing the quick-start instructions included with your device
If the issue continues, simply contact our support team and we’ll take care of it.
We’ll replace your unit or provide a full refund if necessary.
Your safety is our top priority, and we stand behind every AirGuard we sell.
Is this going to go off constantly and drive me crazy?
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No. AirGuard uses intelligent algorithms to tell the difference between harmless CO spikes (like briefly running your gas stove) and dangerous CO buildup (like a cracked furnace leaking gas for hours). You'll only get alerts for actual threats, not normal everyday activity.
Where exactly should I put it?
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Put one within 15 feet of bedrooms (CO poisoning happens most at night while you're sleeping), one near your furnace or main living area, and one on each floor of your home. If you have a fireplace or attached garage, place one nearby. The portable design means you can move it anywhere easily.
Why is this more expensive than the $30 detector at Home Depot?
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That $30 detector only alarms at 70-150 PPM, when you're already poisoned and potentially unconscious. It also expires after 5-7 years without telling you, so you have no idea if it's even working. AirGuard alerts at 30+ PPM (giving you hours to escape instead of minutes), lasts 10 years, shows real-time readings, and actually tells you when it's time to replace it. The question isn't "why spend $60?" it's "why risk your family's life to save $30?"
Does it work during power outages?
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Yes. AirGuard has a built-in battery backup that charges when plugged & automatically kicks in when the power goes out, which is exactly when furnaces and heating systems are most likely to malfunction and leak CO. Your protection never stops.
Can I take this when I travel?
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Absolutely. AirGuard weighs just 8 ounces, fits in any carry-on bag, and works in any standard outlet. This is perfect for hotels (which often have expired or no detectors), Airbnbs (where the owner installed the cheapest detector possible), and RVs (where propane appliances produce CO in tight spaces). Your protection goes wherever you go.
How hard is it to install?
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It takes 3 seconds. Just plug it into any standard outlet. No electrician, no drilling, no tools, no wiring. That's it.
How loud is the alarm? Will it wake you?
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The alarm is rated at 85 dB, which is as loud as a blender or city traffic. It's designed to be heard even through deep sleep so you can act immediately.
Is the sensor accurate and dependable?
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Yes, Airguard uses a professional-grade electrochemical sensor, the same technology trusted by safety professionals. It's far more reliable than low-cost semiconductor sensors found in cheaper models