The best carbon monoxide detection alarms are the First Alert and The Kidde Nighthawk, according to Best Appliance Review. There are three types of carbon monoxide detectors available: electrochemical detectors, biomimetic detectors and semiconductor detectors. The carbon monoxide detectors are reviewed and rated based upon the device's reliability.
The First Alert electrochemical carbon monoxide detector features a battery-powered, backlit display alarm with mute and remote control. The Kidde Nighthawk takes CO readings at 15-second intervals, has a battery back-up and tamper-resistant features. Both brands offer combination smoke and carbon monoxide detectors with optional voice warnings. The units range in price from $10 to $100 and are available at most home improvement stores as of 2015.