Carbon monoxide and heat detectors are not substitutes for smoke detectors

A carbon monoxide (CO) detector is a device similar to a smoke detector intended to warn of carbon monoxide gas.  However, as it does not warn against smoke or other combustion gases, a CO detector is not a substitute for a mandatory smoke detector. Carbon monoxide is formed as a result of incomplete combustion, for example in fireplaces and gas-powered appliances. The authorities recommend installing a CO detector in rooms with, for example, a fireplace, gas stove or gas refrigerator.

A detector that only responds to heat and increases in temperature is also not a substitute a mandatory smoke detector. A heat detector can be used as an additional alarm device in spaces where a smoke detector is not suitable, such as in the kitchen, where cooking may cause false alarms from a smoke detector. There is also separate safety equipment for preventing stove fires, stove guards.