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TrueDetect: The Only Detector That Detects CO On Time–When You Can Still Save Your Family
Carbon monoxide doesn't just appear at deadly levels. It starts small for weeks. Then one cold night, it escalates. And that point, 57% of detectors fail to alarm your family on time.TrueDetect doesn't.
  • Plug-and-play protection- no wiring, no tools
  • See exact CO levels in real-time - catch problems weeks before they escalate
  • Alarms at 30 PPM, not 70 - escape while you and your family can still move
    10-year lifespan with active expiration alert - permanent peace of mind
    Professional-grade sensors used in hospitals
365 Day Money-Back
Note: Not Available on Amazon or Ebay
Patricia Green
“I've personally witnessed too many families poisoned by detectors that failed or alarmed too late. That's why I stake my reputation on TrueDetect's technology—it solves the exact problems I've seen kill and injure thousands. If I wouldn't trust it with my own family's safety, I wouldn't put my name on it.”
Dr. Blane Schilling | Board Certified Since 1995
TerraPore - Filtro d'acqua portatileTerraPore - Utilizzo sul campoTerraPore - Dettaglio prodottoTerraPore - Filtrazione acquaTerraPore - Famiglia protettaTerraPore - Tecnologia NASATerraPore - Facile da usare
70,000+ Families Protected
365-Day Guarantee
Industry-leading 365-Day satisfaction or full refund
Lab Tested & Verified Sensors
Proved superior in the most rigorous tests
#1 Recommended Detector
Endorsed by hundreds of firefighters and HVAC professionals
DON'T LET YOUR FAMILY BECOME ANOTHER WINTER STATISTIC
Carbon monoxide deaths spike by 300% when temperatures drop. Not because CO suddenly appears—but because the small leaks that have been there all along finally escalate when your appliances work hardest.
 Furnace Cracks
When temperatures drop below freezing, your furnace cycles constantly. Small hairline cracks from years of use widen under stress. CO that was 10 PPM becomes 100 PPM overnight. °
Water Heater Corrosion
Most water heaters last 10-15 years before vents corrode from the inside. You can't see it. Your plumber might not even check it. But CO leaks straight into your home while the hot water works fine.
 Blocked Vents
Heavy snow and ice block exhaust vents. CO has nowhere to escape—so it backs into your home. Levels spike from safe to deadly in hours while you sleep.
 Fireplace & Chimney Buildup
 Creosote and debris build up in chimneys over time. When you light your first fire of the season, smoke and CO can't escape properly—they pour back into your living room where your family gathers.
Winter isn't just when CO poisoning is most common.

It's when every failure point hits at once.


Your furnace works harder. Your water heater runs constantly. Your vents get blocked by snow. Your fireplace gets used after sitting dormant all year.

Small leaks that existed all fall suddenly escalate. And your detector? It can't see any of it until it's too late.
The 3 Reasons 100,000 Families Get Poisoned Every Winter—Despite Having Detectors
Most families assume their CO detector is protecting them. But a recent CDC study exposed the truth:
the detector on your wall right now is failing you in three critical ways.
Person disoriented and confused

By The Time You Get Warned, Your Brain Has Already Shut Down

It's 2 AM. You wake up with a pounding headache. Dizzy. Confused.

Something's wrong. You need to get up. You need to get your kids.

But your body won't cooperate. Your legs feel like concrete. Your thoughts are moving through thick fog.

Where's the door? Where are your kids' rooms? You can't remember.

You try to stand. You collapse.

By the time you realize you're in danger, you're already too disoriented to escape.

That's what 70 PPM does to your brain. That's the level traditional alarms are designed to alert at.

Even worse, in 57% of cases, there's no alarm at all until much later. Just silence while you slip away.

CO detector with blinking green light

Your Detector Expired Years Ago—But You Don't Know It

Most CO detectors expire after 5-7 years and completely stop functioning. The sensors wear out. The alarm stops working.

And the green light just keeps blinking.

Families go years—sometimes a decade—thinking they're protected. They see that reassuring green glow every night and assume they're safe.

They're not… And they often only realize it when it's too late.

Ask yourself: When was your detector installed? 2020? 2018??

If you don't know the answer, you're already in danger.

Exhausted parent with child

You May Be Poisoned Right Now—But You Don't Fix It Until The Point Of No Return

For weeks, maybe months, you wake up exhausted. Every single morning.

Headaches that won't quit. Brain fog. Snapping at your kids. Forgetting simple things.

Your kids can't focus at home—but they're fine at school.

You've been to the doctor. Everything checks out. So you blame stress. You blame age. You blame life.

When the whole time, it's the air you're breathing.

20 million American homes are breathing 10, 15, 20 PPM of carbon monoxide right now. Enough to make them sick. Not enough to set off their detectors.

Until one cold night, your furnace works harder and that small crack becomes bigger. 15 PPM becomes 100 PPM in hours. And by the time your alarm goes off, you can't even hear it.

Introducing TrueDetect - The Only Protection You Can Count On
Developed with input from ER doctors, firefighters, and HVAC specialists who've seen too many failed scenes, TrueDetect uses professional-grade sensors—the same technology trusted in private hospitals—to give your family full protection against CO.
TrueDetect display showing 012 PPM

See the danger level in your home now

Real-time digital display shows you CO levels right now.

3 PPM. 8 PPM. 15 PPM. 22 PPM.

These levels indicate a small leak that not only damages your daily health and well-being, but may also turn deadly.

You can't see CO. Can't smell it. This display is your only way to prevent a tragedy weeks before, while also improving your family's health and well-being right now.

TrueDetect alarm display showing 030 PPM with alarm icon

Escape hours earlier—when you can still move.

Standard Detectors Alarm at 70PPM (at best). TrueDetect alarms at 30 PPM.

At 30 PPM, you can still think clearly. You can still move quickly. You can get your family out.

That 40-point difference is the difference between escaping without any harm, and never escaping.

TrueDetect display showing expiration countdown

Feature #3: Expiration Alert: Never unknowingly unprotected.

Standard detectors expire after 5-7 years and stop working—but the green light keeps blinking.

Families go years thinking they're protected when their detector expired years ago.

TrueDetect lasts 10 years and actively alerts you when it's nearing expiration.

You'll never have a false sense of security from a detector that stopped working.

Giving you permanent peace of mind.

Real Families Who Finally Stopped Procrastinating
Sarah K., Buffalo, NY | Mother of Two
"We'd been feeling off for months..."
Reviewed in the United States on December 12, 2024
Verified Purchase
I'd been putting this off for two years. Every winter I'd think "I should check our detector" but never did. Too overwhelmed. TrueDetect was finally simple enough—just plug it in and see the number. 

I ordered the 2-pack, and it arrived one week before the cold snap. Plugged one in our bedroom. It was showing18 PPM every night. 

I called HVAC immediately. There was a crack in our water heater vent. The tech said if we'd waited another month, that crack would've widened and we could've ended up in the ER. 

After they fixed it, the reading dropped to 2 PPM. Within a week, the headaches were gone. We had energy again. We didn't even realize how sick we'd been. 

My husband, who thought I was crazy for buying it, said: "Thank God you didn't listen to me." I can sleep now. Don't wait like I did.
36 people found this helpful
Michael R., Chicago | Father of Three
"It alarmed at 35 PPM—saved our lives."
Reviewed in the United States on November 3, 2025
Verified Purchase
TrueDetect went off at 2 AM showing 35 PPM. Got the kids and evacuated immediately. Firefighters said our furnace had a major crack. CO was pouring in. By the time a standard detector would've gone off at 70 PPM, we'd have all been unconscious. They told me: "If you'd waited 10 more minutes, we'd be doing CPR right now instead of talking to you." Worth every penny. Already bought one for my parents.

6 people found this helpful
David L., Denver | Homeowner
"Finally, peace of mind."
Reviewed in the United States on October 26, 2025
Verified Purchase
After everything I learned about CO detectors, I couldn't trust the green light anymore. With TrueDetect, I don't have to trust—I can see. Every night before bed, I check the display. "0 PPM." We're safe. That peace of mind is priceless. Wish I'd done this years ago.
13 people found this helpful
Why TrueDetect Can Be Relied On While Other Detectors Don’t
True
Detect
Standard
Detectors
200$ "Premium" Detectors
Real-Time CO Display
See Low-Level CO (10-30 PPM)
30 PPM Early Alarm
Expiration Alert
Won't Fail at Deadly Levels
(57% fail)
Plug-and-Play Setup
10-Year Lifespan
Protection in 3 Simple Steps
Step 1: Plug it into any outlet
Bedroom, living room, near furnace—wherever you need eyes on CO levels.
Step 2: Check the display anytime
See the exact PPM. 0 = safe. 10+ = call HVAC. 30+ = alarm sounds, evacuate.
Step 3: Catch problems before they escalate
Small leaks show up weeks before they become emergencies. Fix them early.
120 DAY MONEY BACK.webp
365-Day "Sleep Better Tonight" Guarantee
Order your TerraShells today. Store them in your car, your closet, your go-bag.   Show your family where they are and how to open them…
Order your TrueDetect today. Test them. Show your family how they work.

If for ANY reason in the next 365 days you don't feel:


Relieved that your family is finally protected... .
 
Confident you made the right decision...

Proud you're the parent who actually took action...

Grateful this nightmare scenario can't happen to your family anymore...

Just email us at support@truesafety.co and we'll refund every penny. No questions asked.
Winter Safety Sale - Limited Time!
Protect Your Family Now and You'll Get:
65% OFF - Save Up to $317 on Family 4-Pack
365-Day Money-Back Guarantee
FREE SHIPPING on 3+ Units
FREE Shipping Today!

 120 Day Money-Back • 2 Yr Warranty
Note: Not Available on Amazon or Ebay
Frequently Asked Questions
Why is TrueDetect more expensive than detectors at Home Depot?

Standard $20-30 detectors use the cheapest sensors that barely meet the legal minimum. They can't show you low-level CO (10-30 PPM), they alarm too late (70+ PPM), and 57% of them fail during actual leaks (CDC study).

TrueDetect uses professional-grade sensors—the same technology in fire departments and hospitals. You're paying for technology that actually works, not a false sense of security.

Think of it this way: Would you rather spend $79 now and know you're protected, or risk your family's safety on a $25 detector that has a coin-flip chance of failing when you need it most?

I already have a CO detector. Do I really need this?

Your current detector has three critical problems:

1. It might already be dead. Most detectors expire after 5-7 years but the green light keeps blinking. If you don't know when yours was installed, it could have stopped working years ago.

2. It can't see low-level CO. Standard detectors don't alarm until 70+ PPM. But symptoms start at 10-15 PPM. You could be breathing CO for months—feeling exhausted, foggy, sick—and never know why.

3. Even if it works, it alarms too late. By 70 PPM, your brain is shutting down. You're dizzy, confused, can't move fast. TrueDetect alarms at 30 PPM—when you can still think clearly and actually escape.

Your current detector might work in an emergency (if you're lucky). TrueDetect shows you problems before they become emergencies.

How do I know if TrueDetect is actually working?
That's the whole point—you can SEE it's working.

The display shows you the exact CO level 24/7. If you see "000 PPM" or "002 PPM," you know the sensor is actively reading and you're safe.

With standard detectors, you have no idea if they're working until (maybe) CO reaches deadly levels. The green light just blinks whether the sensor is alive or dead.

Plus, TrueDetect runs a self-diagnostic and will alert you if there's any sensor malfunction. You'll never wonder "is this thing actually protecting me?"
What if I see a reading above 0 PPM? Does that mean I'm in danger?

Not necessarily. Small amounts of CO (1-5 PPM) can be normal from:
• Cooking on gas stove
• Candles burning
• Car running in attached garage
• Outdoor air coming through windows

Here's what to do at each level:

0-9 PPM: You're safe. This is normal.

10-15 PPM: Investigate. Check if stove was just used. If it persists, call HVAC.

15-29 PPM: Call HVAC immediately. Find and fix the leak.

30+ PPM: TrueDetect will alarm. Evacuate immediately and call 911.

The display helps you catch small problems before they become big ones. That's protection standard detectors can't give you.

How is this different from other "premium" or "digital" CO detectors?

Most "premium" detectors ($50-80) still have two fatal flaws:

1. No real-time display. They might show the "peak level" after an alarm goes off, but you can't check your current CO level on demand. You're still blind until there's an emergency.

2. They still alarm at 50-70 PPM. Better than 150 PPM, but still too late. By 50-70 PPM, your brain function is already impaired.

TrueDetect shows you the exact PPM 24/7 (check it anytime—before bed, when you feel off, after HVAC service) AND alarms at 30 PPM (European standard, where CO deaths are 90% lower).

It's not just "better." It's a completely different category of protection.

Will this work in a large home? How many do I need?

CO levels vary significantly by room. A leak near your furnace might show 25 PPM in the basement but only 5 PPM upstairs—until it spreads.

We recommend:
1-2 bedroom home: 2 units (bedroom + living area)
3+ bedroom home: 3 units (master bedroom, kids' area, near furnace/main living)
Multi-story home: 1 per floor minimum

Place them in areas where you spend the most time (bedrooms, living room) and near potential CO sources (furnace room, attached garage).

The 3-pack gives you full home coverage and is our most popular option (54% off + free shipping).

What if I'm renting? Can I take this with me when I move?

Yes! That's one of the best features.

TrueDetect is plug-and-play—no installation, no drilling, no permanent mounting. Just plug it into any outlet.

When you move, unplug it and take it with you. Pack it with your valuables.

This is especially important for renters because:
• You can't control when your landlord maintains the furnace
• Landlords often install the cheapest detectors possible
• You have no idea when the building's detector was last replaced
• Many detectors in rental units are expired but still show green lights

TrueDetect gives you protection you can trust, regardless of what your landlord does (or doesn't do).

How long does it last? Will I have to replace it soon?

TrueDetect lasts 10 years—longer than most standard detectors (5-7 years).

Here's what makes it different:

Standard detectors expire silently. The sensor dies, the alarm stops working, but the green light keeps blinking. Families go years thinking they're protected when they're not.

TrueDetect actively alerts you 6 months before it expires. You'll get plenty of warning to order a replacement. You'll never be unknowingly unprotected.

One purchase = a full decade of protection. Most families will only need to replace it once in their entire time living in a home.

What's your return policy? What if it doesn't work for me?

We offer a 365-day money-back guarantee—four full months to try it risk-free.

Order TrueDetect. Plug it in. Check the display daily. Show your family how it works.

If for any reason you don't feel:

  • Relieved that you can finally see your CO levels
  • Confident you'll get early warning if there's a problem
  • Grateful your family won't be poisoned by a blind detector

Just email us for a full refund. No questions asked. No hassle.

We're confident that once you see "0 PPM" on the display and know you're safe—or catch a small leak before it makes you sick—you'll understand why 10,000+ families trust TrueDetect.

You have nothing to lose and your family's safety to gain.

Mark O.
Jennifer M., Buffalo, NY
"We'd been feeling sick for MONTHS. Doctors found nothing. Got TrueDetect—it showed 18 PPM every night. Called HVAC, found a crack in our water heater. Fixed it. Within a week, the headaches were GONE. We had no idea we were being poisoned in our own home."
Melinda R.
Mike R., Chicago
"I'll be honest—I thought my wife was overreacting buying this. Then at 2 AM it went off at 35 PPM. We evacuated. Firefighters found a major furnace crack. They said 'If you'd waited 10 more minutes, we'd be doing CPR right now.' I bought two more for my parents immediately."
Joan A.
Robert T., Denver.
"I'm 67 and live alone. My old detector was from 2014—probably expired years ago. With TrueDetect, I check it before bed every night: '0 PPM.' That peace of mind is worth every penny. I don't worry anymore."
Ben W.
Ashley K., Minnesota
"My 5-year-old kept complaining about headaches and couldn't sleep through the night. Pediatrician said it was probably anxiety. TrueDetect showed 15 PPM in his bedroom. HVAC found a small leak. Fixed it—he's been sleeping great ever since. Thank God we didn't wait."
Eva A.
David S., Ohio.
"Look, I'm not paranoid. But after reading about the 57% failure rate, I couldn't trust that green light anymore. TrueDetect just works. Plug it in, see the number. Simple. Wish I'd bought it years ago instead of worrying."
Julie R.
Maria G., Portland
"My landlord hasn't touched the detector since 2016. I asked him to replace it—he said 'it still works.' Got TrueDetect for myself. Showed 12 PPM near the furnace. Sent him the photo. He FINALLY called HVAC. Leak confirmed. Taking this with me when I move."
William J.
Tom & Sarah L., Boston.
"First winter in our new house. Previous owners left an old detector from 2012. We replaced it with TrueDetect before winter hit. It's been at 0-2 PPM all season. Knowing for sure we're safe vs. just hoping? That's why we bought it."
Lewis S.
James W., Michigan
"I thought I had chronic fatigue syndrome. Exhausted for 6+ months. Brain fog so bad I couldn't work properly. TrueDetect showed 20 PPM in my home office. HVAC found a cracked heat exchanger. Two weeks after repair, I felt like a different person. This thing saved my career."
Rose M.
Linda H., Texas
"I'd been meaning to check our detector for 2 years. Never did. Got TrueDetect, plugged it in. 5 PPM. Felt relieved. Then during the cold snap, it spiked to 28 PPM. Alarm went off at 30. We evacuated. HVAC said our furnace was failing. If we'd waited until 70 PPM like a normal detector... I don't even want to think about it."
You've Come This Far. Don't Risk Your Family's Safety
You know the stakes. You've seen the evidence. Now choose:
CHOICE 1: Keep Trusting Your Current Detector (Dangerous)
Tell yourself "it's probably fine" for the 187th time
Keep hoping your 7-year-old detector still works
Trust the green light even though 57% of detectors fail
Stay blind to the low-level CO poisoning you right now
That's the kind of regret that never goes away. .
👉 CHOICE 2: Get Real Protection Right Now
Click the button below and feel immediate relief
See your CO levels for the first time—know if you're safe or not
Sleep guilt-free knowing you'll get early warning before it's too late
Join 70,000+ families who stopped guessing and started knowing
Transform. from "I keep meaning to..." into "I actually did it"
MEDICAL & HEALTH DISCLAIMER: The information and other content provided in this page, or in any linked materials, are not intended and should not be construed as medical advice, nor is the information a substitute for professional medical expertise or treatment.

If you or any other person has a medical concern, you should consult with your health care provider or seek other professional medical treatment. Never disregard professional medical advice or delay in seeking it because of something that have read on this page or in any linked materials. If you think you may have a medical emergency, call your doctor or emergency services immediately.
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