Leading you to an educated decision.

NFPA 720
Standard for the Installation of Carbon Monoxide(CO) Detection and Warning Equipment.
1.1.1 This document is primarily concerned with life safety, not with protection of property.
1.1.2 This document is limited to carbon monoxide warning equipment for use in family living units that contain fuel-burning appliances or fireplaces of have attached garages.
1.1.3 This document contains recommendations for the selection, installation, operation, and maintenance of equipment that detects concentrations of carbon monoxide that could pose a risk to the health of most occupants in family living units.