An AC window security device is provided, comprising: a sill plate bracket, a cross-bar, a pair of U-brackets, and a pair of J-brackets. The sill plate bracket is configured to be secured to a window sill under a window AC unit in an at least partially open window. The lower end of each U-bracket hooks into an opening in one end of the sill plate bracket and extend vertically along a side of the AC unit. The upper end of each J-bracket fits over an upper frame of the at least partially open window. The upper end of each U-bracket is removably secured to the lower end of a corresponding J-bracket. The cross-bar is configured to be positioned along a top surface of the AC unit and removably secured to both U-brackets, wherein the at least partially open window is prevented from being opened.

The present invention discloses a design method of an integrated box-type self-contained machine room. The design method comprises the following steps: firstly, selecting equipment parts in line with needs according to requirements of a design drawing for an HVAC system; secondly, optimizing, assembling and connecting the equipment parts, except a host air conditioner, a boiler and a cooling tower; thirdly, integrating the optimized, assembled and connected equipment parts into a protective housing; and finally, integrally testing a water pressure of the protective housing, the equipment parts and joints after washing the protective housing, the equipment parts and the joints, and transporting the same to an installation site of the HVAC system after the water pressure test passes the inspection. The method provided by the invention can improve the installation efficiency of an HVAC machine room and shorten the installation period of the HVAC machine room.

A dehumidifier has a handle that is recessed inward from a top surface of a main body to open both side surfaces thereof and is disposed to stably move the main body of the dehumidifier without deteriorating an outer appearance of the dehumidifier.

An air-conditioner support bracket does not require any drilling into the home and has a higher weight rating of 150 lb. The support bracket is configurable to accommodate a wide range of window Air Conditioning unit shapes and sizes, is adaptable to a variety of opening widths, and may be tilted to support the air conditioning unit in a horizontal position.

A packaged terminal air conditioner unit is provided. The packaged terminal air conditioner unit includes a casing. A compressor, an interior coil, an exterior coil and a reversing valve are positioned within the casing. The reversing valve is configured for selectively reversing a flow direction of compressed refrigerant from the compressor. The packaged terminal air conditioner also includes at least one ejector for combining a stream of refrigerant from a primary loop with a stream of refrigerant from an auxiliary cooling loop, thereby improving system efficiency.

An example heat pump system includes a low-height cabinet configured to be mounted to a ceiling. The low-height cabinet includes a frame and a plurality of panels that define a compressor compartment, a blower compartment, and a plenum compartment. The frame includes one or more dividers that separate the blower compartment, the plenum compartment, and the compressor compartment from each other. The example heat pump system also includes a compressor installed horizontally in the compressor compartment, a heat exchanger installed vertically in the compressor compartment, a blower assembly installed in the blower compartment, and an air coil installed in the blower compartment.

An air conditioning system is provided. The air conditioning system can include an air conditioner unit having a linear transformer and a switching circuit. The linear transformer can include a plurality of primary windings and at least one secondary winding, and the switching circuit can be coupled to the plurality of primary windings. The air conditioning system can include a remote user interface coupled to the at least one secondary winding and a controller operably coupled to the air conditioner unit and the remote user interface. The controller can be configured to control output voltage from the air conditioner unit to the remote user interface by monitoring one or more operational parameters of the air conditioning system, determining a selected winding of the plurality of primary windings based at least in part on the one or more operational parameters, and configuring the linear transformer to operate with the selected winding.

One aspect of this disclosure provides a packaged air conditioning & heating (PACH) system that comprises a housing, an air cooling system contained within the housing and an air heating system contained within the housing. A first utility access point is located on a first side of the housing and a second utility access point is located on a second side of the housing. The first and second utility access points provide multiple utility access connectivity for the air cooling and heating systems.

Air conditioner units and operating methods are provided. A unit includes an outdoor heat exchanger, an indoor heat exchanger, and a compressor. The unit further includes a bulkhead disposed between the outdoor heat exchanger and the indoor heat exchanger. The unit further includes a vent aperture defined in the bulkhead. The unit further includes a dehumidification system which includes an evaporator, a condenser, and an auxiliary compressor in fluid communication with the evaporator and the condenser. The unit further includes a humidity sensor disposed within the outdoor portion, and a controller in communication with the compressor, the auxiliary compressor and the humidity sensor. The controller is configured to deactivate the auxiliary compressor when the compressor is active and an outdoor humidity level sensed by the humidity sensor is above a predetermined humidity threshold.

An air cleaner is provided that includes a first air cleaning module including a first fan that generates an air flow toward a first discharge outlet from a first suction inlet; a second air cleaning module including a second fan that generates an air flow toward a second discharge outlet from a second suction inlet; a divider provided between the first air cleaning module and the second air cleaning module, the divider including a dividing plate space; and a printed circuit board (PCB) device provided in the dividing plate space.