A heater system includes a heater bundle having a plurality of heater assemblies and a plurality of power conductors. More than one of the heater assemblies includes a plurality of heater units, and more than one of the heater units defines at least one independently controlled heating zone. The plurality of power conductors are electrically connected to the independently controlled heating zones. The heater system further includes means for determining temperature, and a power supply device including a controller configured to modulate power to the independently controlled heating zones through the power conductors based on the determined temperature to provide a desired power output along a length of more than one of the heater assemblies.

A hot water tank for a bidet includes a tank main body in which a space for accommodating water is formed and an inclined surface having a portion of an upper side inclined downward is formed. The hot water tank also includes a heating unit inserted into and positioned in the tank main body and a bimetal positioned on the inclined surface.

A heating unit for heating fluid is described having at least one electrical resistance heating element on an outer surface of a tube. At least one indexed groove is provided around a surface of the tube allowing for at least one retention clip to hold the electrical resistance heating element. A heating chamber is also provided to enclose a portion of the tube and to provide a flow channel therebetween. The heating chamber includes an optical sensor to detect overheating of the at least one electrical resistance heating element. Fluid is heated by flowing over the surface of the at least one electrical resistance heating element and through the tube.

Provided is an instant water heater. The instant water heater includes a housing, a water inlet pipe, a water outlet pipe, a mounting member, and an electric controller. The housing has a heating container inside. The heating container includes a cap and a water tank detachably connected to the cap. A heating pipe is disposed within the water tank. The water inlet pipe is in communication with a first side of the cap. The water outlet pipe is in communication with a second side of the cap. The water inlet pipe and the water outlet pipe are connected to two sides of the housing, respectively. The mounting member is configured for securing the water tank to the housing. The electric controller is configured for controlling the heating pipe. By providing stability of the heating container, the provided instant water heater can optimize distribution and installation of components.

Provided is an instant water heater. The instant water heater includes a housing, a water inlet pipe, a water outlet pipe, a mounting member, and an electric controller. The housing has a heating container inside. The heating container includes a cap and a water tank detachably connected to the cap. A heating pipe is disposed within the water tank. The water inlet pipe is in communication with a first side of the cap. The water outlet pipe is in communication with a second side of the cap. The water inlet pipe and the water outlet pipe are connected to two sides of the housing, respectively. The mounting member is configured for securing the water tank to the housing. The electric controller is configured for controlling the heating pipe. By providing stability of the heating container, the provided instant water heater can optimize distribution and installation of components.

A water heater including an inflow terminal for connecting a tankless water heater to a cold water supply and an outflow terminal for connecting the tankless water heater to a tap. A fluid channel proves a fluid connection from the inflow terminal to the outflow terminal. A heat element arrangement is arranged at or within at least a section of the fluid channel for transferring heat to fluid present within the fluid channel. An electronic controller is configured to control a heating power provided to the heat element arrangement. A flow sensor is arranged at or within the fluid channel downstream the heat element arrangement. The electronic controller is further configured to detect the presence of air bubbles within the fluid channel based on a change of a flow signal provided by the flow sensor and to adapt the heating power provided to the heat element arrangement in reaction to the determination of air bubbles.

An automatically flushing water heater maintenance system may be provided, the system including a water heater and a water heater controller. The water heater may include an inlet, an outlet, and a flush outlet having a first control valve in flow communication therewith. The first control valve may be configured to control a flow of water and sediment through the flush outlet out of the water heater. The water heater controller may be configured to communicate with the first control valve by transmitting a first control signal to the first control valve, the first control signal configured to cause the first control valve to open or close as part of an automatic flushing process. As a result of the flushing, the useful life of the water heater may be extended, and/or water heater leakage alleviated. Insurance discounts may be provided based upon using the automatic water heater flushing functionality.

An apparatus and method for heating water using a tank or a tankless water heater with improved electronic control. The improved electronic control may include voice and Wi-Fi control of the water heater to allow for remote control of the water heater including through a remote server or cloud server.

The disclosed technology includes systems and methods for controlling a water heater. The disclosed systems can be configured to receive temperature data from a temperature sensor, receive flow rate data from a flow rate sensor, and receive a temperature setting. The systems can calculate a heat load rate based on at least the temperature data, the flow rate data, and the temperature setting, and can compare the heat load rate to a predetermined threshold setting. The systems can output instructions to perform a fast corrective action in response to the determination that the heat load is changing at a rate (i.e. the heat load rate) greater than, less than, or equal to the predetermined threshold setting.

The disclosed technology includes systems and methods for controlling a water heater. The disclosed systems can be configured to receive temperature data from a temperature sensor, receive flow rate data from a flow rate sensor, and receive a temperature setting. The systems can calculate a heat load rate based on at least the temperature data, the flow rate data, and the temperature setting, and can compare the heat load rate to a predetermined threshold setting. The systems can output instructions to perform a fast corrective action in response to the determination that the heat load is changing at a rate (i.e. the heat load rate) greater than, less than, or equal to the predetermined threshold setting.