An air conditioning unit comprising a baffle strainer tank that includes: a tank body defining a tank cavity, a liquid intake that defines a liquid intake port, a liquid outlet that defines a liquid outlet port, and a baffle strainer assembly.

A packaged terminal air conditioner (PTAC) system includes a wall sleeve in which a chassis is mounted. The wall sleeve includes a bottom configured as a drain pan to collect condensate from the chilling components of the chassis. At a side wall of the wall sleeve there is an aperture configured to allow a person to insert a treatment pellet. The treatment pellet is water soluble and contains an antimicrobial component that prevent or inhibits the growth of biological material that could obstruct the drain system of the wall sleeve and PTAC. A rotating cover is positioned at the side wall to normally cover the aperture and prevent foreign objects from entering the PTAC, but the rotating cover can be rotated so that a hole in the rotating cover aligns with the aperture, allowing insertion of the treatment pellet.

A packaged terminal air conditioner (PTAC) system includes a wall sleeve in which a chassis is mounted. The wall sleeve includes a bottom configured as a drain pan to collect condensate from the chilling components of the chassis. At a side wall of the wall sleeve there is an aperture configured to allow a person to insert a treatment pellet. The treatment pellet is water soluble and contains an antimicrobial component that prevent or inhibits the growth of biological material that could obstruct the drain system of the wall sleeve and PTAC. A rotating cover is positioned at the side wall to normally cover the aperture and prevent foreign objects from entering the PTAC, but the rotating cover can be rotated so that a hole in the rotating cover aligns with the aperture, allowing insertion of the treatment pellet.

An HVAC system utilizes one or more modular heat pump units installed within an outer wall or corner of a building, and one or more active registers. A central hub, which can be integrated into a modular HVAC unit, receives input from thermostats and sensors in the building and adjusts operation of the modular HVAC units and active registers to distribute conditioned air throughout the building. The system provides convenience and comfort of a traditional split HVAC system with significantly reduced installation and maintenance costs. The modular HVAC unit includes an interchangeable cartridge that contains the active components of a heat pump. Cartridges of different capacities can be installed as required, and are easily swapped out for maintenance, servicing, and replacement. A user can control the system using traditional-style thermostats and with a smart phone, tablet or computer. A cloud server provides backup services and remote access to the system.

An HVAC system utilizes one or more modular heat pump units installed within an outer wall or corner of a building, and one or more active registers. A central hub, which can be integrated into a modular HVAC unit, receives input from thermostats and sensors in the building and adjusts operation of the modular HVAC units and active registers to distribute conditioned air throughout the building. The system provides convenience and comfort of a traditional split HVAC system with significantly reduced installation and maintenance costs. The modular HVAC unit includes an interchangeable cartridge that contains the active components of a heat pump. Cartridges of different capacities can be installed as required, and are easily swapped out for maintenance, servicing, and replacement. A user can control the system using traditional-style thermostats and with a smart phone, tablet or computer. A cloud server provides backup services and remote access to the system.

An air conditioning appliance or a make-up air (MUA) assembly may include an intake conduit and a secondary air duct. The intake conduit may be attachable to a housing of the air conditioning appliance. The intake conduit may define an intake passage upstream from the indoor inlet. The intake conduit may further define a secondary inlet upstream from the intake passage to permit air thereto. The secondary air duct may extend from the intake conduit outside of the housing upstream from the secondary inlet to direct air thereto.

An air conditioner unit includes a variable speed compressor for circulating refrigerant through an outdoor heat exchanger and an indoor heat exchanger, an indoor fan, and an outdoor fan. A controller obtains an indoor temperature using an indoor temperature sensor and operates the variable speed compressor, the indoor fan, and the outdoor fan at a first capacity level to adjust the indoor temperature toward a target temperature. The controller determines that a rate of change of the indoor temperature is below a predetermined rate threshold and operates the variable speed compressor, the indoor fan, and the outdoor fan at a second capacity level.

A window air conditioner includes an indoor heat exchanger, a water receiving pan below the heat exchanger, and a filter screen. The water receiving pan includes mounting portions for connecting to heat exchanger flanges. At least one mounting portion has a slot to cooperatively receive a filter screen fitting portion.