The answer to 'how to install carbon monoxide detector' is to install a carbon monoxide (CO) detector in your home to alert you to the presence of this odorless, colorless gas. CO detectors should be placed on every level of your home, within 15 feet of each bedroom, and near any fuel-burning appliances like furnaces, water heaters, or fireplaces.
To install a CO detector, choose a model that is certified by Underwriters Laboratories (UL) or Intertek. Follow the manufacturer's instructions carefully, including the recommended height for placement. Plug in or hardwire the detector, and test it monthly to ensure it is working properly. Replace the batteries twice a year or when the low-battery indicator light turns on.