A method of Sabbath mode in an air conditioning unit includes receiving, at a controller of the air conditioning unit, a temperature signal from a temperature sensor, while in the Sabbath mode. Then determining that the temperature signal is one of above or below a threshold value, while in the Sabbath mode. Followed by adjusting, with the controller of the air conditioning unit, operation of a compressor in the air conditioning unit, while in the Sabbath mode.

Providing simultaneous independent temperature control of conditioned air to first and second rooms. First and second evaporators may be positioned so that: air from the first room passes through the first evaporator before exhausting back to the first room; and air from the second room passes through the second evaporator before exhausting back to the second room.

A packaged terminal air conditioner unit (PTAC) includes a vent aperture defined in a bulkhead of the PTAC and a fan assembly for urging a flow of make-up air through the vent aperture. The fan assembly includes a fan duct fluidly coupled to the bulkhead over the vent aperture and an auxiliary fan attached to the fan duct. An electronics assembly includes an electronics enclosure mounted to the fan duct and defining an electronics compartment having an opening for receiving power electronics for controlling the auxiliary fan. A top plate is attachable over the opening and a seal is positioned between the top plate and the electronics enclosure to substantially enclose and seal the electronics compartment.

A packaged terminal air conditioner unit (PTAC) includes a vent aperture defined in a bulkhead of the PTAC and a fan assembly for urging a flow of make-up air through the vent aperture. The fan assembly includes a fan duct fluidly coupled to the bulkhead over the vent aperture, the fan duct defining an inlet that extends away from the bulkhead toward a rear of the PTAC. An auxiliary fan is mounted to the fan duct for urging the flow of make-up air through the vent aperture, the auxiliary fan including a plurality of fan blades and a stabilizer ring extending about the circumferential direction between the plurality of fan blades.

A wall-mounted air conditioner indoor unit includes a housing having a front housing and a rear housing, main air intake portions formed on the housing, a mixed air outlet formed on a lower portion of the front housing, a non-hot exchange air inlet formed on the rear housing, and an air delivery apparatus disposed inside the housing. A volute and a centrifugal fan located inside the volute are disposed inside the housing and above the air delivery apparatus. An air output portion of the volute faces the hot exchange air passage, and includes a surrounding portion extending to the air delivery apparatus and surrounding the hot exchange air passages, and air mixed cavities are formed between the surrounding portion and the hot exchange air passages.

The invention discloses a wall-mounted air conditioner including an indoor unit. The indoor unit includes a front housing and a rear housing forming housing, the housing is provided with main air intake portions, heat exchangers are disposed inside the housing, both orthographic projection of the front housing and the rear housing are circular or approximately circular, the rear housing is located within a limiting area of the front housing, a surface of the front housing is an arc surface in which an upper portion and a lower portion contract backwards and a middle portion protrudes forwards, and a lower portion of the front housing is provided with an air outlet. The wall-mounted air conditioner according to the invention improves a structure of an existing wall-mounted air conditioner and can output air backwards, thereby ensuring fast flow and temperature adjustment of indoor air.

A window type air conditioner rack, having an upper frame main rack and a diagonal bracing rack inserted to the upper frame main rack; the diagonal bracing rack is adjustably fixed inside the upper frame main rack; the upper frame main rack has a windowsill connection assembly and horizontal supporting pillars fixedly mounted to the an outer side of the windowsill connection assembly.

A window type air conditioner rack, having an upper frame main rack and a diagonal bracing rack inserted to the upper frame main rack; the diagonal bracing rack is adjustably fixed inside the upper frame main rack; the upper frame main rack has a windowsill connection assembly and horizontal supporting pillars fixedly mounted to the an outer side of the windowsill connection assembly.

Air conditioner units, including methods of operation, are provided herein. The air conditioner unit may include an indoor portion, an outdoor portion, and a compressor in fluid communication between the indoor portion and the outdoor portion. The method may include setting an operating temperature of the indoor portion based on a primary temperature target, determining a humidity value at the indoor portion, comparing the determined humidity value to a humidity threshold, resetting the operating temperature as a temporary temperature target when the determined humidity value is above the humidity threshold and the primary temperature target is reached at the indoor portion of the air conditioner, and directing refrigerant compression at the compressor based on the operating temperature.

Disclosed is a hybrid refrigeration full fresh air-conditioning unit, which achieves multistage cooling by means of the combination of a surface cooler cooling system, a refrigerant air-conditioning system and a direct expansion type air-conditioning system. The unit has an outdoor side mainly for cool water supply to a cooler (115) and conducting heat dissipation on a condenser (212) and an indoor side mainly for conducting multistage treatment of air entering a room. The indoor side and the outdoor side are connected to form a whole and are isolated via a panel. The refrigerant air-conditioning system cooperates with one or two of the other systems. Each system can independently operate or simultaneously operate together so that temperature and humidity control for all-weather can be provided, and their operation can be conducted in the most economical and environmental friendly manner under different temperature and humidity condition.