A fluid heater is disclosed and which has a heater, pump, and a plurality of temperature sensors which are electrically coupled with first and second temperature controlled relays, and wherein the fluid heater is operable to maintain a source of fluid used by an object of interest within a predetermined temperature range and further, is operable under given temperature conditions to discontinue operation so as to protect the object of interest and the heater from becoming damaged through overheating of the fluid which is utilized by same.

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.

A heat exchanger device for a heater a motor vehicle, having a housing with at least one fluid channel disposed therein, with a fluid inlet and a fluid outlet, an element generating an alternating magnetic field, and at least one, preferably metallic, flat heating element around which a fluid can flow on one or both sides, whereby at least one further flat heating element is provided, which is configured to divide the at least one fluid channel into subchannels. A heater with a heat exchanger device is also provided.

An on-demand hot water dispenser includes a housing, a water heating system received in the housing, and a faucet connected to the water heating system through the housing for dispensing hot water into a container. A drip tray is positioned below the faucet and a screen covers the drip tray to support the container during dispensing of the hot water.

A temperature control unit includes a fitting, a heating wire, a first temperature sensor, and a housing, which contains the first temperature sensor and portions of the fitting and the heating wire. The fitting includes a fluid inlet, a fluid outlet, a flow channel extending from the fluid inlet to the fluid outlet, and a passage extending through a wall of the fitting to the flow channel. The heating wire extends through the passage and into the flow channel. The first temperature sensor is secured to an external surface of the fitting opposite the flow channel and is electrically connected to the heating wire.

Embodiments of the invention provide a pool heater including a housing, a first tankless heater, a second tankless heater, and a controller. The controller is configured to activate only the first tankless heater when a first condition is met, activate only the second tankless heater when a second condition is met, and activate the first and the second tankless heaters simultaneously when a third condition is met.

The present invention relates to an instantaneous heater, comprising a heating assembly, wherein the heating assembly includes a heating element, a first shell, a first inlet tube, a first water outlet, a hot water cavity, a cold water cavity and a capillary tube, the hot water cavity is in the first shell, the heating element is in the hot water cavity, the hot water cavity communicates with the cold water cavity, the first inlet tube communicates with the cold water cavity, the first water outlet is on the top of the first shell and communicates with the hot water cavity, the capillary tube is in the cold water cavity, one end of the capillary tube communicates with the hot water cavity and the other end communicates with the outside of the first shell. The instantaneous heater boasts simple structure, low cost and effective prevention of vapor from rapidly erupting.

A temperature modulation system for a bed, blanket, or other furniture includes a fluid for moderating temperature change, a number of conduit circuits for directing the fluid through respective zones, a control unit including a thermoelectric device for modulating temperature of the fluid, and a pump. Each of the conduit circuits selectively and independently directs fluid through its respective zone in order to produce a temperature within the zone that is independent of the temperature outside the zone. The system also includes an arrangement of one or more zones in an arrangement in which the control unit is programmed to vary the zone temperature over time according to a schedule.

The invention is directed to a heating block (100) for a continuous flow heater in which a water flow system with channels is arranged in the heating block (100). A heating path (300) of the water flow system forms a hottest channel (340) with a hottest heating element (341) during operation of the continuous flow heater. The hottest channel (340) is arranged downstream of at least one channel (310, 320, 330) of the heating path (300) in a flow direction (110). The hottest channel (340) of the heating path (300) is surrounded by at least four channels which are located between an outer surface (120) of the heating block (100) and the hottest channel (340). Accordingly, the hottest channel (340) of the continuous flow heater is surrounded by at least four channels and is shielded relative to an air space (160).

A point of use induction water heater has a water receiving space arranged between an inlet and outlet, and at least one inductor coil disposed in the water receiving space, arranged to become submerged by water flowing between the inlet and outlet. At least one conductive body is also contained in the water receiving space, and arranged to be inductively heated by the inductor coil upon driving of the coil with a current.