An indoor unit (1000) of an air conditioner includes a housing (100) having an upper base plate (110) provided with an air inlet (101), a lower base plate (120) detachably mounted to the upper base plate (110) and provided with an air outlet, and a front cover (130) detachably mounted to the upper base plate (110); a heat exchanger (140) mounted on the upper base plate (110); a fan (142) detachably mounted to the lower base plate (120); and a thrust structure (340) having a body (350) that is disposed to a rear portion of the indoor unit (1000) and has a thrust face (351) abutting against a mounting member to limit a degree of freedom of upward movement of the indoor unit (1000).

A ventilation fan unit for causing air flow with respect to a room having a ceiling, the room designed for occupancy by a person. The fan unit has a fan unit housing mounted in the ceiling and having an air vent on a room facing surface of the fan unit housing for drawing air from or delivering air to the room. A replaceable panel is provided with a first surface and a second surface, the replaceable panel is removably attachable with the room facing surface of the fan unit housing by way of coupling between the replaceable panel and the fan unit housing so that the replaceable panel can be removed and replaced with another replaceable panel attachable to the fan unit housing by way of the coupling. The replaceable panel, when attached to the fan unit housing, is positioned to obstruct the person's view of the air vent while allowing flow of air therethrough

A thermostat that is configured to be releasably secured to a wall mountable connector, wherein the wall mountable connector includes a jumper switch that permits an installer or other professional to easily form an electrical connection between different wiring terminals of the wall mountable connector in accordance with how particular field wires are connected to the wiring terminals of the wall mountable connector. The thermostat is further configured to automatically determine the position of the jumper switch of the wall mountable connector, and in some cases, change the control of at least some functionality of the thermostat and/or HVAC equipment depending on the position of the jumper switch.

Embodiments are provided for a method for verifying operation of a variable air valve (VAV) equipment. Embodiments can include operating a motor having a motor shaft coupled to VAV equipment in one of a plurality of modes, and controlling a direction of rotation of the motor shaft coupled to the VAV equipment. Embodiments can also include providing an indication of the direction of rotation of the motor shaft coupled to the VAV equipment. Also provided are embodiments for a system that is used for verifying the operation of VAV equipment.

An electrical connector for a compressor of an HVAC system includes electrical leads and a plug communicatively coupled to the electrical leads. The plug includes a plug body and first connectors configured to electrically couple the electrical leads to second connectors of the compressor via engagement of the first connectors with the second connectors. The first connectors are symmetrically distributed on the plug body such that the first connectors can align with the second connectors in a plurality of alignment orientations of the first connectors and the second connectors. The plug also includes at least one interference projection radially extending from a periphery of the plug body. The at least one interference projection is configured to physically interfere with a positioning guide of the compressor and block engagement between the first connectors and the second connectors in all except for one alignment orientation of the plurality of alignment orientations.

Embodiments of the present disclosure provide a protection circuit and an air conditioner, which are applied to the field of air conditioner technologies and used to protect an indoor unit. The protection circuit provided by the embodiments of the present disclosure includes: a positive temperature coefficient thermistor; a signal input terminal; and a communication module; wherein a first end of the positive temperature coefficient thermistor is connected to the signal input terminal, and a second end of the positive temperature coefficient thermistor is connected to the communication module.

A housing for a component (e.g., a heat exchanger) of a heating, ventilation, and/or air conditioning (HVAC) system is disclosed that includes one or more attachment flanges and/or one or more support flanges that are integrated into the housing. The disclosed housing reduces or completely eliminates the use of separate brackets and fasteners when installing components within the housing and/or when coupling the housing to other components of the HVAC system. By dramatically reducing or eliminating these separate components, the disclosed housing designs reduce the likelihood for installation errors, as well as delays due to misplaced brackets and/or fasteners during installation. Accordingly, the disclosed housing designs enable a cost-effective solution for reducing the cost and complexity of installing HVAC system components.

An air conditioner indoor unit includes a housing and a chassis connected to the housing. The chassis and the housing form a receiving chamber with an access opening. At least a portion of an inner side surface of a bottom wall of the chassis forms a guiding surface extending to the access opening. The chassis includes an avoidance hole and a resilient member. At least a portion of the resilient member is arranged in the avoidance hole and protrudes from the guiding surface.

An electrical connector for a compressor of an HVAC system includes electrical leads and a plug communicatively coupled to the electrical leads. The plug includes a plug body and first connectors configured to electrically couple the electrical leads to second connectors of the compressor via engagement of the first connectors with the second connectors. The first connectors are symmetrically distributed on the plug body such that the first connectors can align with the second connectors in a plurality of alignment orientations of the first connectors and the second connectors. The plug also includes at least one interference projection radially extending from a periphery of the plug body. The at least one interference projection is configured to physically interfere with a positioning guide of the compressor and block engagement between the first connectors and the second connectors in all except for one alignment orientation of the plurality of alignment orientations.

Disclosed herein is a method of installing an air conditioner unit into a window frame, the method comprising: inserting the air conditioner unit into an opening in the window frame; extending left and right adjustable side curtains until the left and right adjustable side curtains contact jarbs of the window frame; recording a left measurement of an extent at which the left adjustable side curtain extends from a left reference point of the air conditioner unit and recording a right measurement of an extend at which the right adjustable side curtain extends from a right reference point of the air conditioner unit; cutting to size a left and right outer panel by cutting along a cut line identified by indicia that matches the recorded left and right measurements; and snap-fittingly installing the cut left and right outer panel onto a frame of the left and right adjustable side curtain respectively.