Abstract: A flush valve water accelerator having a top opening of increased height to reduce the amount of water used by a toilet, and which accelerates the flow of water to increase the efficacy of the water in the toilet bowl. The device is comprised of an entry tube and an exit tube, with the exit tube having a minimum inside diameter of approximately fifty (50) percent of the median inside diameter of the entry tube to accelerate the flow of water into the toilet bowl without causing cavitation from the vacuum created by the restriction of the exit tube. A connecting tube, having a decreasing inside diameter, connects the entry tube and the exit tube.

Abstract: A device is disclosed which causes a fan of a heating and/or air conditioning system to continue to run until the temperature in the duct work of the system reaches a desired temperature, so as to remove all heated and/or cooled air from the system, however, the device is designed so as to not cause the fan to be actuated due to changes in the duct work temperature which are due to changes in outside temperature or causes other than the operation of the system. A sensor which is located in the duct work controls the operation of the fan in response to temperature changes only if the sensor control circuit is first energized by the operation of the system.