Abstract: A dehumidifying system for use in a building housing a swimming pool. The system includes a refrigerant compressor, a dehumidifier coil for dehumidify ing air within the building, an air cooled condenser for reheating the air previously cooled down in the dehumidifying coil as well as for heating the swimming pool enclosure and a water cooled condensor for heating the pool water. The heat developed in the system can be used to selectively heat the dehumidified air within the building and the water in the swimming pool. The water obtained during dehumdification of the air is collected and returned to the swimming pool.

Abstract: A dehumidifying system for use in a building housing a swimming pool. The system includes a refrigerant compressor, a dehumidifier coil for dehumidifying air within the building, an air cooled condenser for reheating the air previously cooled down in the dehumidifying coil as well as for heating the swimming pool enclosure and a water cooled condenser for heating the pool water. The heat developed in the system can be used to selectively heat the dehumidified air within the building and the water in the swimming pool. The water obtained during dehumidification of the air is collected and returned to the swimming pool.

Abstract: A frost detecting device for a refrigeration unit of the type having refrigeration coils and fins. The device is adapted to be mounted on the side of the unit with frost accumulating means projecting from the unit to contact at least one fin in a manner to accumulate frost thereon at about the same rate as the fin. The device carries means for detecting a predetermined amount of frost on the accumulating means, in order to activate a defrosting cycle.