Lochinvar & A.O. Smith 100111120 0.80" Air Pressure Switch

The Lochinvar & A.O. Smith 100111120 Air Pressure Switch is a safety component in HVAC systems, especially in gas-fired water heaters and boilers. It regulates the internal air pressure of the combustion chamber so as to serve as a safety measure. When the pressure drops down to a certain level, the switch pulls out the ignition system, and this may cause danger of producing some gases that can explode or the causes incomplete combustion. This makes safety and operational efficiency possible and makes it easier to achieve reliable operation of heating equipment. It is made for its durability and sensitivity to switch and also for the stability of HVAC systems.