“CO is invisible. Odorless. Silent. And it’s already in 1 in 5 homes with gas appliances. HomeShield warns you before it’s too late.”
HomeShield® | 4-in-1 Smart CO Detector
- Shows live gas levels in real time
- Alerts before 30 PPM
- Earlier warning instead of a late-stage alarm
- Recommended by Firefighters and HVAC pro's
120-Day Home Protection Guarantee
Free shipping, 7–13 days
Ethan W.
I’ve responded to too many callouts where families believed they were protected. The detector had a green light on. Yet carbon monoxide was already there — invisible, odourless and completely silent. In 15 years of service, I’ve learned one thing: good families don’t run out of luck. Sometimes, they simply don’t have the right protection when it matters most. That’s why I recommend HomeShield to every family I meet who wants smarter protection and real peace of mind.” -Professional Firefighter · 15 Years of Service..
Because one silent danger can change everything
Every night, families go to sleep believing they’re safe. But carbon monoxide is invisible, silent and impossible to notice until it’s too late.
HomeShield gives you earlier warnings and real-time protection, so you can protect the people you love with complete peace of mind.
Trusted by 10,000+ households
Dr. Jameson,
88
Verified Buyer
“I got 4 for myself. Then I got 4 more for my daughter. Those old green light detectors are gone. My grandkids deserve real protection.”
Mark M,
58
Verified Buyer
"All those years trusting a little
green light. Never again. Got
HomeSield for myself and made
sure my son had them too.
Charles K,
72
Verified Buyer
"We sleep in our RV 100+ nights a
year. Trusted a green light that
whole time. Switched to Dewlora
and now I actually know what
we're breathing. Small space, big
risk. Real numbers matter more in
an RV
Frank Jackson,
48
Verified Buyer
"I respond to CO calls. I've seen
detectors that never went off.
Green light glowing while families
were poisoned. That's why I have
Homeshield plugged in at home.
know what real protection looks
like. This is it.
Danna S,
32
Verified Buyer
"I bought multiple units because
one hallway alarm was not
enough. I wanted my mother to
have visible readings in more than
one room"
Helps protect your family earlier
Early warning, more time to act
HomeShield® detects danger sooner, helping protect your family with fast alerts and real-time readings.
Helps protect your family earlier
Early warning, more time to act
HomeShield® detects danger sooner, helping protect your family with fast alerts and real-time readings.
0%
MORE VISIBLE CONFIDENCE
0%
MORE CONFIDENCE IN PROTECTING EVERY ROOM
Visible readings. More protection.. Early alerts and real-time readings for more reliable safety. 👨🚒 Recommended by fire safety experts.
Because real protection starts before danger does
HomeShield doesn’t wait for danger to become obvious. With real-time monitoring and early detection, it helps protect the people who matter most — giving your family more time, more awareness and more peace of mind.
Built with firefighter insight. Built to save lives.
Firefighters know the pattern too well: families trust a “working” detector, but the warning comes too late.
HomeShield is built to make rising gas levels visible earlier, so households have more time to act.
What makes HomeShield different
What makes HomeShield different
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HomeShield
Original
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Most Detectors
Copy
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Shows real-time CO levels
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Alerts you hours earlier
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Detects natural gas+ propane
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Easy install
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Smarter monitoring
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What the test really tells you
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YES | NO |
Don’t wait for the alarm to tell you something is wrong
Carbon monoxide builds up silently, and the most dangerous part is thinking your home is safe when there’s no warning at all. With real-time monitoring and early detection, HomeShield helps your family stay one step ahead of danger.
Protect your family with confidence — or get every dollar back
Your family’s safety shouldn’t feel like a gamble. That’s why every HomeShield detector comes with a 120-Day Risk-Free Trial and 3-Year Warranty, so you can protect what matters most with complete peace of mind.
Frequently asked questions
Does it detect natural gas and propane, or only CO?
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HomeShield is designed to detect carbon monoxide, natural gas, and propane in one device.
How many detectors do I need?
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3 to 4 detectors is ideal for full home protection.
Place one near the bedrooms, one near the kitchen, one near your furnace or water heater, and one on any additional floor.
That way you’re covered where you sleep, where you cook, and where gas appliances run.
Does it matter how high I install the detector?
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For carbon monoxide, installation height doesn’t matter because CO mixes evenly with air.
However, if you’re using it to detect natural gas (which is primarily a fire and explosion hazard, not the same silent sleeping danger as CO), it’s best to install it as high as possible.
How long does the sensor last?
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The sensor is built for continuous use, and HomeShield includes a 3-year warranty for added reassurance.
How do I know it is working?
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The live display shows the monitored gas readings directly on-screen, so you can confirm it is actively reading the environment.
Is it difficult to set up?
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No Wi-Fi, no app, no batteries — just plug it in and start monitoring.