Used to regulate and prevent failure in packaged units, the pressure switch is an integral part of the unit. Used in G5, G6 and MG furnaces as well as R2, R4, R6 and PPG package units.
Limit Switches regulate when your home is heated by gauging the temperature of the surrounding air. Located in G5, G6, MG, PG, and our L & G series furnaces.
A furnace limit switch is a component of a forced-air furnace that is responsible for turning on the furnace blower once the desired heat has been reached. Limit Switches regulate when your home is heated by gauging the temperature of the surrounding air. If the temperature inside the furnace gets too hot, the limit will open up, resultin...Read moreg in the burners shutting off. This limit opens at 250° and closes at 225°. It uses an automatic reset along with fixed programming.