A heating device having a holding apparatus to accommodate a control unit, the holding apparatus having a receiving part. It is proposed that a cover be fixed in place on the receiving part, which is provided to protect electrical connections or electrical components from a fluid, in particular spray water. A holding apparatus for a heating device is also described.

A combustion device may include a casing including a bottom plate, a combustion unit housed in the casing, and a fan housed in the casing and configured to take in air inside the casing and supply the air to the combustion unit. The bottom plate may be provided with a flat portion and a recess recessed downward from the flat portion. The recess may be provided with a drainage hole and an eave arranged above the drainage hole. The drainage hole may be located below an upper surface of the flat portion. The eave may be at least partially located below the upper surface of the flat portion.

An electric radiator is described, having a housing, delimiting an upper compartment and a lower compartment, at least one heating member installed in the upper compartment and capable of emitting thermal radiation when it is supplied with electrical power, at least one electrical energy storage device, an attachment device enabling the removable installation of the electrical energy storage device in the lower compartment, in such a way that the electrical energy storage device is capable of varying between a connection configuration and a disconnection configuration, and a heat protection shield located between the heating member and the electrical energy storage device and blocking infrared rays while allowing the movement of air by convection, which are emitted in the direction of the electrical energy storage device.

Provided are a housing assembly and a water heater. The housing assembly includes a bottom plate assembly and an outer housing. The outer housing is provided with a hooking fitting portion, the bottom plate assembly includes: a base and a supporting portion, a crimping space for positioning the outer housing is formed between at least portion of the supporting portion and the base. The hooking fitting portion is hooked with the crimping space.

A combination space and water heating apparatus includes a frame enclosing a water heating assembly and an air heating assembly. The water heating assembly is positioned in a top front portion of the frame and supplies hot water in response to a hot water demand. The water heating assembly includes inlet and outlet water connections through a top portion of the water heating assembly. The air heating assembly is positioned in a rear and bottom portion of the frame and supplies heated air in response to a space heating demand. Maintenance access to the air heating assembly is solely through a front section of the bottom portion of the frame.

Example embodiments of the present disclosure relate to improved HVAC devices and kits for HVAC devices that improve the sound attenuation associated with the device, particularly low-frequency noise. An example embodiment includes an improved furnace including a housing with a combustion air chamber, a heat exchanger chamber, and a circulation blower chamber, wherein the combustion air chamber comprises a burner assembly and a combustion air fan, the furnace also includes a sound attenuation layer including a first acoustic metamaterial layer coupled to the combustion air chamber and tuned to attenuate sound for a first frequency band, one or more housing openings fluidly connecting the combustion air chamber to an environment outside the housing, wherein the sound attenuation layer includes a discontinuous section that aligns with one or more of the housing openings.

An instantaneous water heater is provided. The instantaneous water heater comprises a heating mechanism, comprising at least two heating components which are independent from each other; a pipeline mechanism, which is assembled on the heating mechanism; the pipeline mechanism comprises a heat exchange section for heat transfer with outside, a water inlet channel for supplying water to the heating components, and a water outlet channel for outputting hot water; the water inlet channel is at least partially surrounded by the heat exchange section; and a control mechanism, which is at least electrically connected to the heating mechanism. The heat exchange section is in contact with the control mechanism to dissipate heat from the control mechanism.

The exhaust duct includes an exhaust collecting portion connected a heat exchanger and an exhaust guiding portion communicating with the exhaust collecting portion and extended upward in a state close to a side of a cylindrical body of the heat exchanger. The exhaust collecting portion includes a connection opening constituting an inner peripheral wall, into which a cylindrical outlet side connection portion at the lower end of the heat exchanger is fitted, and a groove provided on an outer peripheral side than the inner peripheral wall of the connection opening. The packing includes a seal portion sandwiched in a compressed state between the inner peripheral wall of the connection opening in the exhaust collecting portion and an outer peripheral wall of the cylindrical outlet side connection portion in the heat exchanger to constitute a seal and an anchor portion inserted into the groove of the exhaust collecting portion.

A heat exchange cell includes a casing, a heat exchanger in which a first heat transfer fluid flows, a feeding zone, and first and second collection chambers for a second heat transfer fluid. The casing can include rear, front, and peripheral side walls. The heat exchanger can be helically-shaped, mounted in the casing, and include at least one tubular duct for the flow of the first heat transfer fluid. The tubular duct can be coiled about a longitudinal axis and define a helix. The feeding zone of the second heat transfer fluid can be defined in the casing coaxially and internally with respect to the helix. The first chamber can be defined externally with respect to the heat exchanger by a radially outer wall thereof and the peripheral side wall. The second chamber can be at least partially delimited by at least one separating element.

A base member includes a substantially horizontal main body that supports one or more components of a heating and cooling unit. The main body includes a conditioned space portion about a first side of the main body and a non-conditional space portion about a second side of the main body. A substantially vertical separation wall extends up from the main body and separates the conditioned space portion from the non-conditioned space portion. A lip is formed at least partially about the non-conditioned space portion. At least one drainage hole extends through the non-conditioned space portion. A surface of the non-conditioned space portion is sloped towards the at least one drainage hole. A drain pan is disposed about the conditioned space portion. At least one drainage tube is in fluid communication with the drain pan. A surface of the drain pan is sloped towards the at least one drainage tube.