Abstract: A carbon monoxide detection and automatic deactivation system including a fuel burner having a fuel supply conduit coupled thereto. A pilot igniter is situated adjacent to a pilot supply conduit and is adapted to provide a flame in an interior space of the burner upon the actuation thereof. A thermocouple is positioned adjacent to the pilot igniter for producing an electric current upon the detection of heat. Also included is an electromechanical fuel valve comprising a solenoid adapted to allow the supply of fuel to the burner upon the receipt of current via the thermocouple and further preclude said supply upon the lack thereof. Finally, a switch mechanism is electrically coupled between the thermocouple and the solenoid. The switch mechanism has a first orientation for allowing current to pass therebetween with the absence of carbon monoxide and a second orientation for precluding current to pass therebetween with the presence of carbon monoxide.