A safety system and method to prevent water within a top portion of a tank of an electric water heater to drop below a safe temperature during a load shedding period, other than a full emergency grid failure, by a power provider whereby to prevent the propagation of harmful bacteria in a top portion the tank. A control device monitors the water temperature in the top portion of the tank by the use of a temperature sensor. If the control device detects a temperature of the water in the top portion of the tank inferior to 140 degrees F., it will by-pass the instructions of the power provider and connect power to one or more of the resistive heating elements of the tank until a predetermined temperature above 140 degrees F. is attained before switching off the resistive heating elements.

A water heating tank is provided comprising a reservoir with a cold water inlet into the reservoir and a hot water outlet from the reservoir. The water heating tank further comprises a heater enclosure located within the reservoir. The heater enclosure encloses at least part of a heater. The heater enclosure has an inlet, a vent and an outlet. The water heating tank further comprises a duct connected to the outlet of the heater enclosure. The duct has an exit located in an upper portion of the reservoir.

An apparatus and method for heating water using tankless water heater with TRIAC. The present invention is a TRIAC adjustment device that lets a user adjust electric output within a tankless water heater to limit or turn off electricity to a TRAIC within the tankless water heater. As utilized herein, a TRAIC or traic is defined as “a three-electrode semiconductor device that will conduct in either direction when triggered by a positive or negative signal at the gate electrode.”

A heater system includes an integrated heater device and a control system. The integrated heater device includes a thermocouple for measuring temperature and one or more multiportion resistive elements that are operable as heaters to create a temperature differential between the fluid and air to detect the fluid, and as sensors to measure a fluid level. The control device operates the integrated heater device as a sensor or heater based on one or more performance characteristics of the heater system and self-calibrates the heater device.

A water heating system including a tank at least one of an electric heating element and/or a heat pump assembly for heating the water in the tank and a controller operatively coupled to the at least one of an electric resistance heating element and/or a heat pump assembly configured to control operation of the water heating system is disclosed. The controller is configured to gather information comprising at least one of user preferences for the system, specifications for energy related systems of a home in which the water heating system is installed, specifications for how the water heating system is physically configured within the home, environmental parameters for a location in which the water heating system is installed, and is configured to process this information to control the water heater system to operate according to the information.

A hydronic heating pad includes a control unit and a blanket pad connected to the control unit. The blanket pad includes a warm water region. The control unit includes a water reservoir tank, a heating pipe, an outlet pipe, and at least one return pipe. The heating pipe, the outlet pipe, and at least one return pipe are disposed on the water reservoir tank. The outlet pipe and the at least one return pipe extend into the warm water region, whereby the outlet pipe, the at least one return pipe, and the warm water region form a circulating water channel. The outlet pipe is provided with a water pump. The at least one return pipe is provided with a temperature-sensitive solenoid valve. The blanket pad includes at least two layers of waterproof fabrics. The warm water region is a hermetic region and includes a plurality of first polygon patterns.

A water heater includes a first heater, a second heater, and a controller. The controller can enable different operational modes of the water heater, wherein only the first heater operates, only the second heater operates, or both the first and the second heaters operate. The controller can also be configured to enable a hybrid operational mode and a bypass operational mode. Further, in the different operational modes, the controller can direct water flow to at least one of a first conduit coupled to the first heater, a second conduit coupled to the second heater, and a bypass conduit. The controller can be configured to receive input signals relating to environmental conditions around the water heater and/or an aquatic system in which the water heater is installed.

A smart electric heating device comprises a storage unit, a first heating unit, a second heating unit, a control unit and a first temperature sensing unit. With the first temperature sensing unit to obtain an ambient temperature, the control unit compares the ambient temperature with a maximum increased temperature and a set temperature for controlling the first heating unit and the second heating unit to actuate. In this way, each user can use hot water of sufficient temperature better.

A water heating system can include a water heater having a tank, an inlet line, and an outlet line, where the inlet line provides unheated water to the tank, and where the outlet line draws heated water from the tank. The water heating system can also include multiple sensing devices, where each sensing device of the plurality of sensing devices measures a parameter associated with the tank. The water heating system can further include a controller communicably coupled to the plurality of sensing devices, where the controller determines an amount of heated water in the tank based on measurements made by the plurality of sensing devices.

A hot water storage device having a vessel includes a first section formed from a moulded material and a second section formed from a moulded material. An open end of the first section is sealingly engaged with an opposing open end of the second section to form the vessel. The first and second sections each have a generally cylindrical body portion and a closed end, comprising a head portion. The vessel includes a water inlet aperture moulded into the first or second section and a water outlet aperture moulded into the first or second section and wherein the inlet and outlet apertures are located on the body portion proximal to a tangent line between the body portion and the head portion.