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Trusted by Americans
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FREE SHIPPING ON ALL ORDERS
Trusted by Americans
FREE SHIPPING ON ALL ORDERS
Trusted by Americans
FREE SHIPPING ON ALL ORDERS
Trusted by Americans
FREE SHIPPING ON ALL ORDERS
Trusted by Americans
FREE SHIPPING ON ALL ORDERS
Trusted by Americans
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Trusted by Americans
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Electrochemical CO protection that alerts you before it's too late
Detects Low-Level Carbon Monoxide
Provides Earlier CO Warnings
Shows Real-Time Air Readings
Long-Term, Plug-and-Play Home Protection
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Return & refund policy
Customers must submit a return request within 10 days from the order's arrival date.
For more details on the return process and conditions, please refer to our complete Return & Refund Policy.
THE PROBLEM NO ONE TALKS ABOUT
The Real Danger of CO Isn't Death, It's Chronic Health Damage, Here's what the research says, and why it matters for you and your family:
There were 100,000 documented CO poisoning cases in America last year. But these are only the documented cases. These are people who were severely poisoned and ended up in the emergency room. But for people living with low-level exposure, the ones never sick enough for the doctor to suspect and run a CO blood test, experts believe the real number is 50-100x bigger. Somewhere between 5 and 10 million people.
See, a low-level CO leak isn't rare. It doesn't require an old or broken appliance. Just a tiny hairline crack or a ventilation issue is enough to chronically build up unhealthy CO levels in your home.
CDC CO Poisoning Surveillance DataResearch from the CDC, WHO, and peer-reviewed cardiovascular studies shows that CO begins affecting the human body at 9 PPM. At these levels, CO binds to hemoglobin and begins displacing oxygen throughout your body. Leading to chronic symptoms:
And a list of other health problems.
CDC CO Health Data; WHO Air Quality Guidelines; Bell et al., Circulation 2009Chronic low-level CO exposure produces symptoms that are nearly identical to a dozen common conditions - stress, burnout, depression, chronic fatigue, seasonal allergies, and anxiety. When you bring these symptoms to a doctor, CO poisoning is almost never on the differential. Especially when CO just makes your existing disease worse. So patients get diagnosed with something else.
One peer-reviewed study screened patients presenting to emergency departments with flu-like symptoms, and found that 23.8% of them were simply chronically poisoned by CO.
Journal of Emergency Medicine; Wright, "Chronic and Occult Carbon Monoxide Poisoning," 2002While children absorb CO up to 3x faster than adults, the consequences don't always show up right away. Adults tend to feel symptoms quickly because their bodies are already in a state of natural decline, and CO just accelerates that process. Children, however, are at their biological peak. Their bodies compensate. Research shows the effects only become measurable years later. Resulting in severe health issues or health decline years or decades before they should have appeared.
Dix-Cooper et al., Neurotoxicology 2012; Ritz & Yu, Environmental Health Perspectives99% of CO detectors sold in America are built to the same standard set in 1992. Under that standard, manufacturers are not required to detect or display anything below 70 PPM. So they don't. Not because the technology doesn't exist. Because they prefer not to pay the extra cost of a more advanced sensor. Consumers can't tell the difference either way.
The result is that every detector on the market shows you nothing below 70 PPM. From the $25 one at Home Depot to the $50 one with the digital display. A screen that reads zero isn't telling you your air is clean. It's telling you CO hasn't crossed 70 PPM yet.
UL 2034 Standard Documentation; WHO Air Quality Guidelines 2021; NCOAA Petition to CPSC 2024
Most people assume CO poisoning requires an obviously broken or old appliance. It doesn't.
New, Well-maintained appliances can develop hairline cracks that even inspections can't check. And appliances can develop faults the day after an inspection.
CO leaks are unexpected. A furnace can run perfectly for 6 years and suddenly develop a crack overnight. A flue can shift in a cold snap. A burner can come out of a service slightly out of tune and nobody notices.
The people who were chronically poisoned by carbon monoxide for months or even years weren't negligent. They had a yearly inspection, they bought reliable appliances. They did everything right.
They just didn't have a detector that could tell them what was happening.
At concentrations as low as 9 PPM, carbon monoxide binds to hemoglobin - the molecule that carries oxygen through your blood. Over days and weeks of exposure, your blood's ability to deliver oxygen to your brain, heart, and organs becomes progressively impaired. The damage is cumulative and silent.
no matter how much you sleep
brain fog, memory issues, difficulty concentrating, mental slowness
recurring, with no clear trigger
disrupted sleep, never reaching deep rest, waking unrefreshed
irritability, anxiety, depression, emotional flatness
heart palpitations, shortness of breath, elevated heart rate
worsening asthma, breathing difficulties, reduced lung capacity
recurring nausea, dizziness, weakened immune response, getting sick more often and taking longer to recover
CO is known to exacerbate pre-existing cardiovascular, respiratory, and neurological conditions, accelerating their progression and making them harder to manage
CDC CO Health Data; WHO Air Quality Guidelines; Bell et al., Circulation 2009;
Standard detectors show nothing below 70 PPM, even those with an LCD screen. TrueDetect monitors from 1 PPM, displaying the exact CO concentration in your home at all times, so you can actually see what's in your air, and fix it.
If CO reaches dangerous levels, TrueDetect alarms at 30 PPM — hours before standard detectors make a sound. At 30 PPM you are still clear-headed. You can still think, move, and get everyone out. By 70 PPM, many people can't.
TrueDetect sends your phone intelligent notifications the moment CO starts climbing — telling you the level, what it means for your health, and what to do.
No battery changes. No recalibration. No replacement. Plug it in once and it runs for a decade. And when it's time, it tells you.
TrueDetect |
Standard Detector |
|
|---|---|---|
| Lowest Detectable Level | 1 PPM | 70 PPM |
| Health-Level Warnings | ||
| Phone Notifications | ||
| Emergency Alarm | ||
| Device Lifespan | 10 Years | 5 Years |
| Expiry Notification | ||
| Built To | Protect your health | Meet the legal minimum |
Simple To Set Up
Plug TrueDetect into any outlet
Connect TrueDetect To Your Phone by downloading the TrueSafety App and hitting the "Pair" button.
Your family is now protected - for a full decade.
You don't have to connect TrueDetect to your phone to be protected. TrueDetect has an alarm of its own. The app is a bonus.
You don't need to set up the detectors again for your family's phones. Just log in to your user account from their phone.
WHAT OUR CUSTOMERS REPORT
DAY 1
You notice that what you've been dealing with feels slightly less intense today. You're not sure if it's real yet. But it's different enough that you notice it. And you haven't changed anything else.
DAY 7
You feel dramatically better. The difference between this week and every week before it is not subtle. It's the kind of improvement you'd stopped believing was possible. You find yourself doing things you'd quietly given up on. Being more of who you were before this started.
DAY 14
Looking back, you can see it now. The gradual decline you'd attributed to stress, age, or just life. It wasn't those things, or at least not only those things. Two weeks of cleaner air and the difference is undeniable. And you find yourself wondering how you survived like that for so long.
BOARD OF QUALITY ASSURANCE
Meet the experts who validate our technology and ensure it's backed by rigorous, independent evidence.
Medical Innovation Specialist & Retired ER Physician
Board-Certified Toxicologist
Director of Consumer Product Safety Compliance
Professor of Biomedical Engineering
Environmental Health & Safety Engineer
CO Poisoning Survivor & Founder, National CO Safety Alliance
4.9 stars · 1,500+ reviews · 250,000+ sold
I had brain fog and fatigue for almost two years. Doctors kept telling me it was stress. TrueDetect arrived and within a day showed 18 PPM in my bedroom. Called an HVAC tech, he found a hairline crack in the heat exchanger. Fixed it. Within two weeks I felt like a different person. Two years. I wish I knew about it sooner.
Had persistent headaches and brain fog and fatigue for months. Tried everything. TrueDetect showed 12 PPM consistently every morning. Turned out our gas stove was running rich and our kitchen ventilation wasn't adequate. The headaches are gone. My doctor told me it sounds too good to be true. He changed his mind when he saw me one week later feeling like myself again.
My dad kept complaining about feeling foggy and tired. He's 71 so we assumed it was age. TrueDetect showed low but consistent CO levels in their bedroom from a water heater in the adjacent utility room. Fixed the ventilation. He says he hasn't felt this clear in years. Get this for your parents.
As an HVAC technician I've seen this too many times. People living for months with low-level CO from minor appliance issues that would never trigger a standard detector. TrueDetect is the only monitor I've seen that actually shows you what's happening below 70 PPM. I recommend it to almost every house I service now.
Mood swings, anxiety, disrupted sleep for about six months. My therapist thought it was situational. TrueDetect showed 11 PPM in my apartment regularly — coming from a neighbor's unit through shared ventilation. Since fixing the seal on my unit the difference has been night and day. I'm not anxious. I was being slowly poisoned.
I was traveling for work and got a notification from TrueDetect saying CO levels in my home had been at 14 PPM for three hours. Called my wife, she opened windows and called the HVAC company. Furnace had developed a fault. Without the app notification I would've never known for who knows how long...
After reading about low-level CO I realized I had almost every symptom on the list. Got TrueDetect, levels were fine — but now I actually know they're fine. Not just hoping they are. That certainty alone is worth the price.
Falling asleep at 8pm, couldn't hold a thought at work. I assumed burnout. TrueDetect read 15 PPM most evenings. The old wall furnace was venting badly. Three weeks after the fix I stopped needing an afternoon nap.
I'd been running on empty for a year and a half. Levels sat around 11 PPM every night in the bedroom. Turned out to be the water heater flue. I don't want to think about how long it had been like that.
I'm a bookkeeper and I was making mistakes I'd never made before. TrueDetect showed 13 PPM. Once we fixed the venting it took about ten days before I noticed I could concentrate again.
My neurologist ran every test and found nothing. TrueDetect showed 16 PPM in the room where I work from home. A blocked flue on the fireplace. I still get one occasionally, but nothing like before.
Daily dull headache for months. Nothing showed on the old detector, obviously. This one showed 9 to 14 PPM overnight. Gas range with poor ventilation. My husband noticed the change in me before I did.
Fine all day at work, headache within an hour of getting home. That should have told me something. 12 PPM in the hallway. Fixed the furnace and the pattern just stopped.
I'd wake up more tired than when I went to bed. Levels were sitting at 10 to 13 PPM overnight. Once we sorted the venting I woke up for the first time in I don't know how long.
I assumed it was stress. Bought this after reading about low-level CO. 14 PPM in the bedroom, from a water heater in the closet next door. Sleeping through now.
We both slept badly for two years and quietly blamed each other. Turned out to be 11 PPM every night from the furnace. Slightly embarrassing, but I'll take it.
Irritable, flat, anxious for no reason I could point to. TrueDetect showed 12 PPM most evenings. Fixed the range hood venting. I'm not saying it fixed everything, but I feel like myself again.
I'd been treating anxiety for a year. Levels in my apartment ran 10 to 15 PPM. The landlord fixed the boiler vent. My therapist was the one who told me to keep the detector.
Every winter I'd get low and assumed it was the dark months. It was the furnace running more. 13 PPM. This winter has been completely different.
Inhaler use kept climbing. TrueDetect read 14 PPM whenever the furnace ran. Cracked heat exchanger. My pulmonologist wants the name of this thing.
At 38. Levels around 12 PPM from the wall heater. Two weeks after the repair I made it up without stopping. I hadn't realised how bad it had got.
His attacks always seemed worse at home. 11 PPM in his bedroom, coming in from the garage. We sealed the door and put a second detector in there. Far fewer attacks since.
Eight years old, complaining of headaches most school nights. The doctor said growing pains. 15 PPM in her room above the garage. It's been quiet since we fixed it.
She's 78 and had been foggy and unsteady. We assumed it was her age. The detector showed 12 PPM from an old boiler. Her balance is better and she's sharper on the phone.
He'd gone from a strong student to struggling to focus. 13 PPM in the bedroom. I'm not claiming it was all the CO, but the change after we fixed it was hard to miss.
The research is unambiguous. The WHO recommends keeping indoor CO below 3.4 PPM over 24 hours and below 8.6 PPM over 8 hours. The EPA's outdoor air safety standard is 9 PPM. Every major public health body has concluded that long-term exposure to CO at levels well below 70 PPM causes measurable cardiovascular, cognitive, and neurological harm. The reason most people don't know this is that gas companies would lobby to keep the standard alarm threshold where it is.
No. and this is the most common misconception. Under UL 2034, all detectors with digital displays are legally allowed to show zero for anything below 70 PPM, and most show zero below 70 PPM. The display is not showing you your actual CO level.
Doctors catch it in 100,000 Americans a year. But that's because those people were severely poisoned, at levels of probably about 30 PPM. But for the other millions of people, doctors never catch it. Because at low CO levels the symptoms are identical to dozens of conditions doctors test for every day. CO poisoning is almost never on the differential.
A peer-reviewed study has investigated that issue. They screened patients presenting to emergency departments with flu-like symptoms, and found that 23.8% of them (1 out of 4 people) were simply chronically poisoned by carbon monoxide.
TrueDetect functions as both a health monitor and an emergency detector. It monitors from 1 PPM for health purposes and alarms at 30 PPM for emergency purposes — making it both a low-level health monitor and a superior replacement for your existing detector simultaneously.
Discovering that your levels are normal is not a waste. It gives you the certainty that your family is safe and will be safe forever. A leak can happen at anytime, and you want to be aware of it before it destroys your health.
Download the free TrueSafety app on iPhone or Android, log in with the email you purchased with, and tap "Pair Detectors." It finds TrueDetect automatically.
Yes. Plug TrueDetect into any outlet and it begins monitoring and displaying CO levels immediately. The app adds phone notifications, remote monitoring, and exposure history — but the protection starts the moment it's plugged in.
Yes, you can lower the brightness to multiple different levels. The lowest brightness level won't be noticeable in a dark room.
