Early 24/7 CO Detection
Monitors from 0 PPM so you see danger rising in real time, not only once CO hits 70 PPM.
4.8/5 Based on 17,127+ Reviews
CarbonOne Safe Carbon Monoxide & Gas Detector 24/7 Trusted Protection From the Silent Killers.
4-in-1 protection against carbon monoxide, natural gas, propane, and smoke due to fire. With a live reading you can see.
- Early alert system: a danger warning before it's too late
- Live digital display: see what's actually in your air
- Plugs in anywhere: 5 seconds, no tools
- Battery backup: protected even when the power goes out
- Self-testing: always monitoring, always working
$49.99 $99.98 50% Off
90 Day Money Back Guarantee. Fast 2-3 day shipping from our US warehouse.
Why families choose CarbonOne Safe
Know What's in Your Air, Every Second
Real-time monitoring for carbon monoxide, propane, natural gas, and smoke. Not a green light that blinks and hopes for the best.
01
Real-Time Readings, 24/7
Most detectors stay silent until CO hits 70 parts per million (PPM). By then you've been breathing it for hours. CarbonOne Safe monitors from 0 PPM and shows live CO and gas levels every second of every day. Not a green light. Not a guess. A real number, in real time.
02
4-in-1 Protection
Most detectors only watch for one danger. CarbonOne Safe monitors carbon monoxide, natural gas, propane, and smoke from fire in one device. With clear real-time readings and instant alerts, you can spot danger early and act fast.
03
Instant Alert
When danger hits, seconds matter. CarbonOne Safe sounds an immediate alarm when CO, gas, or smoke is detected, cutting through sleep and noise. No confusion. Just fast, clear action when it counts most.
04
5-Second Setup
No ladder. No tools. No electrician. Plug CarbonOne Safe into any standard outlet and it starts monitoring.
05
Battery Backup Protection
Power outages don't pause gas leaks or fires. CarbonOne Safe keeps monitoring your home even when the lights go out, because those are exactly the moments you need it most.
06
Always On, Always Working
Many detectors fail silently: the green light stays on long after the sensor dies. CarbonOne Safe continuously runs self-checks, so you never have to wonder if it's working.
Complete Home Protection With CarbonOne Safe
4-in-1 Protection
Carbon monoxide, natural gas, propane, and smoke due to fire. One device, zero gaps.
Instant Alarm Alert
Sounds immediately when CO, gas, or smoke is detected so your family knows to get out fast.
5-Second Setup
Plug into any standard outlet. No tools, no wiring, no hassle.
Battery Backup
Keeps monitoring even when the power goes out.
Always Self-Testing
Runs automatic safety checks around the clock.
5-Year Rated Lifespan
Built to protect your home for years, not months.
How CarbonOne Safe Works
Plug It In
Plug CarbonOne Safe into any standard wall outlet. No tools, no ladder, no electrician. It takes 5 seconds.
Read Your Air
The screen shows the live CO level in your home at all times. Zero means your air is clean. The higher the number, the more CO is present.
Get Alerted
If levels get dangerous, the alarm goes off automatically, so your family knows to get out fast.
Where to put it: Put one near gas appliances like your furnace, water heater, or stove, and one in the hallway outside the bedrooms. One per floor is a good starting point. Most homes are fully covered with 2 to 4 units.
Built to a Professional Standard
CarbonOne Safe uses certified electrochemical sensor technology found in professional-grade detection equipment across the US. It monitors continuously, self-tests automatically, and runs on backup power when the power goes out.
It's a real-time detection system built for the one job that matters: keeping your family breathing safe air.
How we compare
What Makes CarbonOne Safe Different
| CarbonOne Safe | Standard Detectors | |
|---|---|---|
| Shows real-time CO levels | ✓ | ✕ |
| Detects CO, natural gas, propane and smoke | ✓ | ✕ |
| Early alert system | ✓ | ✕ |
| Easy plug-in install | ✓ | ✕ |
| Battery backup | ✓ | ✕ |
| Self-testing | ✓ | ✕ |
| Service life | 5 years | Up to 2 years |
| Money back guarantee | 90 days | ✕ |
Buy With Confidence: 100% Risk-Free
Try CarbonOne Safe in your home for 90 days.If you don't feel safer knowing exactly what your family is breathing, we'll refund every penny. No questions asked.
98.4% would recommend
What Customers Say About CarbonOne Safe
Works great
Plugged it in and it was up and running. Love that you can actually see the numbers on the screen. Our old one just had a green light. Highly recommend.
Jessica C. · Verified Customer
Great value
Doesn't just cover CO but gas as well, which most cheap ones don't. Screen is clear, setup took no time. Great price considering everything it covers. Would buy again.
David S. · Verified Customer
Easy to use
I'm not tech savvy at all and had zero issues setting this up. Just plugged it in. Screen came on. Done. My daughter kept telling me to get one and I'm glad she did.
Donna R. · Verified Customer
Bought 3
Started with one and ordered two more the same week. Put one near the furnace, one in the kitchen and one in the hallway. Peace of mind knowing the whole house is covered.
James W. · Verified Customer
Got one for my mom
She's older and lives alone. Wanted something easy for her to use. She had it set up herself in under a minute. Simple and gives us both peace of mind.
Carol B. · Verified Customer
Worth it
Spent way too long relying on an old detector with a green light. This actually shows you what's in the air. Should have switched sooner. Already ordered another one for upstairs.
Lisa H. · Verified Customer
Limited-time offer
Protect Every Floor of Your Home
One near the furnace, one in the kitchen, one outside the bedrooms. The more you get, the less each one costs.
1 Detector$49.99/eachSave $49.992 Detectors$44.99/eachSave $109.983 Detectors$39.99/eachSave $179.965 Detectors$29.99/eachSave $349.88
- Fast 2-3 day shipping from our US warehouse
- 90 Day Money Back Guarantee
- 5 Years of Protection
Your questions answered
Frequently Asked Questions
What does CarbonOne Safe detect?
It detects carbon monoxide, natural gas, propane, and smoke due to fire. Most cheap detectors only cover CO.
How do I install it?
Plug it into any standard wall outlet. That's it. No tools, no ladder, no electrician. Takes 5 seconds.
What does the number on the screen mean?
It shows you the live CO level in your home at all times. Zero means your air is clean. The higher the number, the more CO is present. If levels get dangerous, the alarm goes off automatically.
How is this different from my current detector?
Most standard detectors just show a green light and don't alarm until CO hits 70 PPM. By then you've already been breathing it for hours. CarbonOne Safe shows you real numbers starting at 0 PPM, so you see danger rising before it becomes an emergency.
What happens if the power goes out?
The built-in battery backup keeps it running even when the power goes out.
How do I know it's actually working?
It runs automatic self-checks continuously. You don't have to do anything. If something is wrong, it will tell you.
How long does it last?
CarbonOne Safe is rated for 5 years. Most cheap detectors burn out in 2 to 3 years while the green light keeps glowing like nothing is wrong.
Where should I put it?
Near gas appliances like your furnace, water heater or stove, and in the hallway outside bedrooms. Most homes are fully covered with 2 to 4 units.
How many do I need?
One per floor is a good starting point. Add one near any gas appliance and one outside each sleeping area for full coverage. Most families need 2 to 4.
How long does shipping take?
Orders are dispatched within 48 business hours. Standard delivery usually takes 2 to 3 days. Once your order ships, you will receive a tracking link by email.