This Ideal air pressure switch facilitates safety checks that ensure the fan is fully functional. It ensures that, if the fan fails within the boiler, there will not be a build up of noxious gases with no means of venting them. The printed circuit board closely monitors the air pressure switch to make sure it is in full working order before the unit is fired up, preventing the appliance from starting without one of its key safety devices.

Brand Name	Ideal Heating