A heat exchanger core for a heat pump, comprising a first chamber comprising a chamber body, the chamber body comprising an air inlet, an air outlet and a first heat exchange coil adjacent to the air inlet and inclined with respect to the air inlet; a second chamber comprising a chamber body, the chamber body having an air inlet, an air outlet and a second heat exchange coil adjacent the air inlet and inclined with respect to the air inlet; the first heat exchange coil and the second heat exchange coil forming a circuit for circulating refrigerant between the first heat exchange coil and the second heat exchange coil.

An air conditioner indoor unit includes an air outlet frame, a front water receiving tray, and a panel. The air outlet frame includes an upper enclosure plate, a lower enclosure plate, and a side enclosure plate located between and connecting the upper enclosure plate and the lower enclosure plate. The front water receiving tray is above the upper enclosure plate and includes a protrusion section protruding out of the side enclosure plate and a water outlet hose at the protrusion section. The water outlet hose is configured to be received in a receiving cavity formed below the protrusion section and opening forward. The panel includes a cover member configured to cover the receiving cavity when the panel is in a closed state.

A condensate pump assembly comprising: a housing having an inlet port, a reservoir arranged to receive liquid through the inlet port, and an outlet port having an outlet assembly mounted thereto, a pump arranged to pump liquid from reservoir to the liquid outlet assembly, and a pair of clips releasably connectable to the housing at a first pair of mounting portions and a second pair of mounting portions, wherein each of the pair of clips has a first portion for connecting to a first external element and a second portion for connecting to a second external element, wherein the pair of clips are configur the first external element when connected to the first pair of mou the pair of clips are configured to mount the housing to the sec connected to the second pair of mounting portions.

An external-air conditioning apparatus and a ventilation system are provided, the external-air conditioning apparatus includes a fin tube type heat exchanger and a housing that stores this heat exchanger. The housing includes a base body that serves as a back side of the apparatus body and a cover body that serves as a front side of the apparatus body, and the base body and the cover body are dividable and detachable in structure. The base body has a base portion, a partitioning portion, a connecting pipe portion, a heat-exchanger-holding structure portion, and a water receiving portion. The cover body is a structure in which a front wall portion and a three-side peripheral wall portion are formed integrally with each other, and a part in which the peripheral wall portion is not formed is an inlet for external air.

Example embodiments of the present disclosure relate to a method of commissioning an HVAC system and a related unit. Some embodiments of the method include providing a unit of the HVAC system with a plurality of condensate outlets such that the unit may be installed in a plurality of orientations; installing the unit in a preferred orientation; selecting one of the condensate outlets from the plurality of outlets that is positioned to receive condensate based on the preferred orientation; attaching a condensate line to the selected one of the condensate outlets; and installing a sensor along the condensate line, the sensor configured to detect a presence of a refrigerant that is heavier than air and would flow with gravity along with the condensate collected by the unit.

The automatic air conditioner drain system sanitizer may comprise a pump, a controller, a solution reservoir, and a power source. The automatic air conditioner drain system sanitizer may be configured to dispense a drain clearing solution from the solution reservoir into a drain line of an air conditioning system periodically in order to prevent growth of microorganisms within the drain line. The microorganisms may be referred to as white slime and may comprise bacteria, algae, mold, mildew, fungus, or any combination thereof. As non-limiting examples, the drain clearing solution may be white vinegar, bleach, chlorine tablet dissolved in water, or a liquid drain line clearing product. The quantity of the drain clearing solution dispensed and the dispensing interval may be selected and may vary based upon the drain clearing solution used.

The present disclosure relates to an enclosure of a vapor compression system, where a component is disposed within the enclosure. The component is fluidly coupled to the vapor compression system and configured to discharge a flow of fluid. The enclosure includes a hole within a portion of the enclosure and a relief valve disposed within the hole of the enclosure, where the relief valve is configured to discharge the flow of fluid in a first direction through a passage within the relief valve. The passage extends from an interior region of the enclosure to an environment external of the enclosure. The relief valve is configured to block a second flow of fluid through the passage in a second direction, where the second direction is opposite of the first direction.

A dehumidifier appliance may include a cabinet, a refrigeration assembly, a collection tray, and an extended water conduit. The collection tray may be disposed below an evaporator of the refrigeration assembly to receive water condensation therefrom. The extended water conduit may be disposed within the cabinet downstream from collection tray.

An air conditioner shut-off system includes an overflow conduit that is coupled, at one end, to the drainage system of an air handler unit of the air conditioner system. The opposite end of the overflow conduit is positioned over an overflow container, which is suspended by a harness at the lower end of the harness. The upper end of the harness being operably coupled to the shut off switch throw of a shut off switch, which is provided on or proximate to the air handler unit. If the drainage system becomes obstructed, water will flow into the overflow container through the conduit, and eventually the mass of the water accumulated in the overflow container will produce enough force acting on the shut off switch throw through the harness to flip the shut off switch throw to the OFF position, resulting in the air conditioner system being shut off.

In one embodiment, an overflow sensor assembly of an HVAC unit includes a sensor mounting bracket that is configured to be coupled to a mounting surface of the HVAC unit such that sensor probes of the overflow sensor assembly are suspended within and extend into a condensate drain pan of the HVAC unit. The sensor probes are defined by a sensor element that is coupled to the sensor mounting bracket and a spring that is coupled to the sensor element. The sensor probes are configured to activate an overflow detection circuit when the sensor probes come in contact with condensate fluid collected in the condensate drain pan prior to the condensate fluid overflowing from the condensate drain pan.