A heated and chilled water dispenser comprising: a housing; an input port fast with the housing for connection to a mains pressure water supply; at least one chilled water container arranged to receive water from the input port; a water chilling assembly arranged to cool said at least one chilled water container; at least one hot water tank including a heating element and a water receiving arrangement to receive water from the input port, the water receiving arrangement including an inlet valve responsive to water level; an inlet plenum associated with the inlet valve, the plenum being coupled with the input port to receive water, the plenum further comprising a fill pipe coupled to the hot water tank for supplying water to the hot water tank; a thermostat coupled to said at least one hot water tank for controlling the heating element and thus temperature of water within the hot water tank; a two way outlet tap configured for dispensing hot water from the hot water supply or chilled water from the chilled water container in accordance with a user's selection; a liquid delivery device coupled to said at least one hot water tank for supplying hot water from the hot water tank, said device being arranged to be actuated by the outlet tap.

A water heating assembly, related kit, use and method make use of a temperature control near a point of use of water, so as to reduce a time response for hot water at this point of use are provided. The water heating assembly includes a tank for containing water, an inlet temperature sensor for sensing an inlet temperature of the water upstream of the tank, and a valve located upstream of the tank. The valve is actuated when the sensed inlet temperature reaches a given temperature set-point such that the water is bypassed from the tank and directly sent to the point of use. The water heating assembly is configured such that the point of use can be fed with water at the desired temperature in a reduced time, the water coming directly from the hot water source and/or the water heating assembly, thereby saving water, energy and time.

A gas valve for a gas appliance of a gas burner system. The gas valve is connected to a gas source via a gas pipe. The gas valve is disposed with a check valve body, wherein the check valve body allows gas in the gas pipe to flow into the gas valve and prohibits the gas in the gas valve to flow into the gas pipe so the check valve body can thereby prevent the gas in the gas valve from flwoing back to the gas pipe. When gas in the gas pipe flows to to another gas appliance of the gas burner system, the gas flowing to another gas appliance does not mix with air in the gas appliance, thereby reducing the iginition time and enhancing the combustion efficiency.

A laser based water heating element formed from at least two components, e.g., a shaft and a laser beam generator, wherein the shaft and laser beam generator of the laser based water heating element are axially aligned, i.e., the shaft is centered on the laser beam generator, where the laser beam generator is a self-contained green, infrared and red-line laser module with an integrated laser driver circuit, optics and laser diode such that, in operation, the laser beam generator generates a laser beam with an output power that is sufficient to cause the shaft to generate radiant heat and thereby cause the temperature of water within a water heater to rise.

Systems and methods are directed to water heater systems, including combi boilers and instantaneous water heaters, for initiating back up operations, e.g., for continuous flow and hot water delivery, in response to errors or interruptions to normal operations. Embodiments of the present invention can include, a plurality of heat exchangers, including a domestic hot water outlet, temperature sensors sensing water temperature at one or more locations within the water heater system, a control system. The control system can be configured to at least: monitor the water temperature measured by the first temperature sensor, identify an abnormality in monitoring the water temperature, initiate am alternative operation to sense water temperature via an alternate pathway and heat water to a set point value during the abnormality, and deliver water heated to the set point value during the abnormality.

Provided is an instant water boiling device, which comprises: an instant water boiler provided with a water inlet and a water outlet communicated with a faucet; a control panel arranged on the faucet; and a controller in signal connection with the control panel and the instant water boiler. According to the invention, the control panel is separated from the instant water boiler, which is convenient to install, the instant water boiler with a larger volume can be installed in a cabinet under a tabletop, which saves a space of the tabletop, and meanwhile, the control panel is installed on the faucet, which is convenient for a user to operate the control panel, thus facilitating the operation, simplifying the installation, and saving the space of the tabletop.

A liquid heating appliance for heating water or other liquids, suitably to a target temperature of from 55° C. to around boiling point, includes a primary heat chamber or body (heat source chamber) that is thermally insulated and which in use contains a high thermal density heat storing liquid or solid; and a secondary chamber alongside the primary chamber through which a liquid to be heated is passed in use. The appliance has a heat transfer feature to selectively transfer thermal energy from the heat-storing liquid or solid to the liquid to be heated in the secondary chamber. The secondary chamber is preferably a conduit through which the liquid to be heated is able to flow and the thus heated liquid can be delivered to a tap as hot water for a range of uses. Water may also be heated for a central heating system for space heating.

A modularized combined intelligent heat collector system, comprising a PTCR-xthm electric heating chip heat source main engine, a data control template, a constant-temperature and constant-pressure device and a variable-frequency pump; the variable-frequency pump and the PTCR-xthm electric heating chip heat source main engine are connected to the data control template; the outlet end of the PTCR-xthm electric heating chip heat source main engine is connected to the constant-temperature and constant-pressure device; the outlet end of the constant-temperature and constant-pressure device is connected to the PTCR-xthm electric heating chip heat source main engine through the variable-frequency pump; the PTCR-xthm electric heating chip heat source main engine directly leads out a user heating pipeline; and/or the PTCR-xthm electric heating chip heat source main engine leads out the user heating pipeline through the constant-temperature and constant-pressure device, and is connected to a heat exchanger of a user water heater.

A heater with a recovery device for swelling water is provided. A water inlet pipe and a water outlet pipe are longitudinally provided on the heater. The recovery device is transversely disposed on the heater and connected with the water inlet pipe, such that the recovery device is coupled on to reduce the entire size. The recovery device is adapted to recycle and store the swelling hot water in the heater so as to provide an energy-saving effect and to stop water from dripping.

A water heater system includes an intermediate water heater having a storage tank in which water is initially received at an initial temperature. The intermediate water heater is controllable to heat the water to an intermediate temperature that is higher than the initial temperature. The water heater system also includes at least one point-of-use water heater coupled to the intermediate water heater for receiving the water from the intermediate water heater after the water has been heated to the intermediate temperature. The point-of-use heater is controllable to heat the received water to a point-of-use temperature, the point-of-use temperature being higher than the intermediate temperature.