Abstract: An electric steam humidifier having a water reservoir configured substantially as a right triangle, wherein the hypotenuse side of the reservoir can be selectively mounted on the exterior surface of the bottom wall and exterior surface of the vertical wall of an air duct of a forced air furnace.

Abstract: A spray pad humidifier including a housing having two side wall portions extending perpendicular to each other along one edge, and being interconnected along the opposite edge by an arcuate wall. One of the side wall portions is provided with an opening communicating with the return cool air plenum of a furnace, and the other side wall portion is provided with an opening communicating with the hot air supply plenum of the furnace. A one-piece evaporator pad is configured to extend over both openings, and a water spray nozzle is mounted on the housing for spraying water into the housing and onto the portion of the pad extending over one of the openings. Reinforcing ribs are formed on the housing to not only provide channels within the housing for holding the evaporator pad in the operative position, but also to provide troughs for collecting drain water within the housing.

Abstract: A self cleaning solenoid controlled water spray nozzle and valve assembly including an adaptor connected at one end to a solenoid actuated valve member and having a nozzle and nozzle flow direction member connected to the opposite end of the adaptor. A cleaning pin is connected to the valve member and extends through the nozzle orifice. In one embodiment the nozzle is integrally formed with the adaptor and the flow direction member is integrally formed on the bottom wall of a cup positioned within the adaptor. In another embodiment the nozzle and associated flow direction member are threadably mounted on the adaptor.