How to Choose a Carbon Monoxide Meter
An electrochemical sensor with 1 ppm resolution, peak hold, alarm setpoints, and a sensor you can replace. Plus a certified alarm at home, always.
Read Guide→Carbon Monoxide Detectors
Gas leak detectors, CO, methane, refrigerants and multi-gas meters.
- Independent Research
- Verified Specifications
- Honest Recommendations
Buying Guides
Best Gas Detectors for Home Inspectors: Sniffers and CO Meters for Inspection Reports
A two-range gas sniffer and a ppm carbon monoxide meter, the pair an inspector needs to document a gas appliance, plus a 4-gas monitor for crawl spaces.
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Best Portable Carbon Monoxide Detectors for Travel: Battery Picks for Hotels, Rentals and RVs
Battery CO alarms and meters that fit a carry-on, compared from manufacturer documentation for hotel rooms, vacation rentals and RV trips.
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Best Carbon Monoxide Detectors: Plug-In, Battery and Low-Level Picks Compared
Listed Kidde and First Alert CO alarms compared by power source and display, plus a low-level monitor that shows ppm before an alarm would sound.
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Kidde COPDLG Review: Plug-In Explosive Gas and CO Alarm With AA Backup
Plug-in CO and explosive gas alarm with two AA backup cells, a display that shows CO ppm or GAS, low-level CO alerts at 30 to 70 ppm, 85 dB, 7-year warranty.
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Safe-T-Alert 25-742 Review: Dual Propane and CO Alarm for RVs
Compact flush-mount 12-volt RV alarm for propane and CO, 108 mA draw, mute with rapid recovery, UL 2034 RV and UL 1484 RV. Replaces Atwood 31013 and 31014.
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Kidde Explosive Gas and CO Alarm Review (Plug-In, 9V Backup)
A plug-in alarm that watches for carbon monoxide and for natural gas or propane, with a digital display, 85 dB horn, peak level memory and a 9V battery backup.
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Carbon Monoxide Meter vs CO Alarm: What Is the Difference?
An alarm protects sleeping people. A meter finds the source. A home needs the alarm; a technician needs the meter.
Read Article→Does a Carbon Monoxide Detector Detect Natural Gas?
No. A CO detector cannot sense natural gas, propane or methane, and a smoke detector cannot either. Only a combustible gas sensor responds to a fuel leak.
Read Article→Gas Leak Detector vs Carbon Monoxide Detector: Two Different Hazards
A gas leak detector senses unburned fuel before it can ignite; a CO detector senses the poison left by fuel that burned badly. Neither covers the other.
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