Abstract: Flex duct systems have a flex duct having a wire-reinforced core and first and second hollow connector ends threaded to one each of ends of the wire-reinforced core. Each connector end has a plurality of locking tabs. A boot, a saddle trunk, or a linking connector each have a plurality of sleeves each protruding radially outward and positioned to releasably, attachably receive one of the plurality of locking tabs for a fluid tight connection therewith.

Abstract: Air heating and potable water systems have a thermostat with a computer processing unit (CPU), a hot water heater, a hydronic air handler, and a primary pump controlling flow of hot water from the water heater into the hydronic air handler, which has a hydronic coil, a blower, and a first control panel having a CPU in operative communicates with the thermostat. The hydronic coil receives hot water from the water heater to warm air passing over the hydronic coil. The primary pump is in operative communication with the first control panel and an indicator of hot water flow. The indicator of hot water flow is in operative communication with either the thermostat or the first control panel, and any CPU in the system stores a priority instruction, which upon an indication of hot water flow deactivates or delays activation of the primary pump for a predetermined period of time.

Abstract: A common vent application and an independent fan coil are disclosed for improved heating, cooling and water making in a building. The independent fan coil obviates the common boilers and chillers in addition to all the common heating and cooling distribution piping used in known systems. Instead, the fan coils contain all the hydronic heating components and all the components needed to provide AC without the use of common boilers and chilled water systems. The fan coils utilize common vent shaft ducting to exhaust the products of combustion generated for the independent tankless water heater. In addition, the common vent shaft may utilize a negative static pressure environment to exhaust the heat of rejection from the AC portion of the fan coil unit.

Abstract: A water producing system adapted to condense water from the air and collected in a storage tank were the water is purified and bacteria is killed. One form of killing the bacteria is utilizing a circulation line with a filter system to remove the ozone before the water is dispensed. A circulation line is to prevent dead legs in the system which can lead to bacteria production.

Abstract: A water producing system adapted to condense water from the air and collected in a storage tank were the water is purified and bacteria is killed. One form of killing the bacteria is utilizing an ozone injection system with a filter system to remove the ozone before the water is dispensed. In one form, a dual fluid circuit is utilized where an operating fluid dumps heat to a second circuit such as a refrigeration cycle and the cooled operating fluid lowers the temperature of a water condensation member.