An air conditioner unit includes a housing defining an outdoor portion and an indoor portion. An outdoor heat exchanger assembly is disposed in the outdoor portion and an indoor heat exchanger assembly is disposed in the indoor portion. The air conditioner unit also includes a compressor in fluid communication with the outdoor heat exchanger assembly and the indoor heat exchanger assembly to circulate a refrigerant therebetween. The air conditioner unit further includes a plenum attached to the housing. The plenum is receivable within a wall channel defined by a structure wall along an axial direction. The air conditioner unit also includes a make-up air duct extending between the plenum and the indoor portion of the housing with a bracket fixed in place within the make-up air duct and a make-up air component slidably received in the bracket. The make-up air component is slidably removable from the bracket.

Aspects of the present disclosure include a primary air chamber configured to receive primary air, an induced air chamber configured to receive secondary air, a heating coil disposed in the induced air chamber, wherein the heating coil is removable from the induced air chamber without disassembling at least a portion of the induced air chamber, and the heating coil does not receive the primary air, a fan disposed in the induced air chamber, wherein the fan is configured to blow the secondary air received via the induced air chamber toward the heating coil and the heating coil heats the secondary air.

Aspects of the present disclosure include a primary air chamber configured to receive primary air, an induced air chamber configured to receive secondary air, a heating coil disposed in the induced air chamber, wherein the heating coil is removable from the induced air chamber without disassembling at least a portion of the induced air chamber, and the heating coil does not receive the primary air, a fan disposed in the induced air chamber, wherein the fan is configured to blow the secondary air received via the induced air chamber toward the heating coil and the heating coil heats the secondary air.

A frameless HVAC door system for reduced noise transmission leakage, and improved installation. The system includes a first member having opposed first and second surfaces and a first size that defines a first perimeter extending around the first and second surfaces. The first member is further equipped with a latch spaced apart from a hinge member on the first member. The door further includes a second member mounted on the first member first surface. The second member includes a sidewall extending around the second member to define a second member perimeter. The second member further includes a second member surface extending between the side walls and along the second member perimeter to define a compartment. The compartment is insulated against noise and temperature change. The second member perimeter is smaller than the first member perimeter, which defines a flange extending from the second member perimeter to the first member perimeter to define a flange perimeter. The flange is equipped with a resilient elastic foam sealing material along its perimeter. The first member is hingedly mounted to a surface around an opening for pivotal movement relative thereto. When the latch engages the latch receiver, it distributes a uniform compressive sealing force along the flange when the first member is in a closed position relative to the opening.

An air conditioner indoor unit includes a housing, an air duct assembly mounted in the housing, and a lower panel. The housing includes a face frame. An opening is formed at a lower portion of the face frame. The lower panel includes an air outlet in communication with the air duct assembly. A periphery of the lower panel is detachably connected with an edge of the opening or the air duct assembly, and the opening is configured to expose the air duct assembly when the lower panel is opened.

A system including a processor and sensor for installation inside an underground vault. The sensor monitors a parameter inside the vault and sends a monitoring signal to the processor. Based on the monitoring signal, the processor may provide data to a memory for storage and/or control signals to an interface for transmission to an external device located within the vault. The control signals instruct the external device to modify the environment inside the vault. The sensor may be positioned inside an enclosure, which is inside a housing. An air moving device moves air into or out of the enclosure thereby drawing air from the vault into the enclosure before the sensor monitors the parameter. A heat generating component may be positioned inside the housing and when generating heat prevents moisture from condensing therein. The system may include a power unit that draws power from a power source inside the vault.

A system including a processor and sensor for installation inside an underground vault. The sensor monitors a parameter inside the vault and sends a monitoring signal to the processor. Based on the monitoring signal, the processor may provide data to a memory for storage and/or control signals to an interface for transmission to an external device located within the vault. The control signals instruct the external device to modify the environment inside the vault. The sensor may be positioned inside an enclosure, which is inside a housing. An air moving device moves air into or out of the enclosure thereby drawing air from the vault into the enclosure before the sensor monitors the parameter. A heat generating component may be positioned inside the housing and when generating heat prevents moisture from condensing therein. The system may include a power unit that draws power from a power source inside the vault.

The present disclosure relates to an air cleaning system comprising: a ducting section comprising an inlet and an outlet; at least one source of ultraviolet radiation arranged to emit ultraviolet radiation into an interior volume of the ducting section, the interior volume between the inlet and the outlet; and a reflective surface arranged to reflect ultraviolet radiation emitted by the source of ultraviolet radiation within the interior volume of the ducting section, wherein the reflective surface is capable of reflecting at least 60% of incident ultraviolet radiation.

A frameless HVAC door system for reduced noise transmission leakage, and improved installation. The system includes a first member having opposed first and second surfaces and a first size that defines a first perimeter extending around the first and second surfaces. The first member is further equipped with a latch spaced apart from a hinge member on the first member. The door further includes a second member mounted on the first member first surface. The second member includes a sidewall extending around the second member to define a second member perimeter. The second member further includes a second member surface extending between the side walls and along the second member perimeter to define a compartment. The compartment is insulated against noise and temperature change. The second member perimeter is smaller than the first member perimeter, which defines a flange extending from the second member perimeter to the first member perimeter to define a flange perimeter. The flange is equipped with a resilient elastic foam sealing material along its perimeter. The first member is hingedly mounted to a surface around an opening for pivotal movement relative thereto. When the latch engages the latch receiver, it distributes a uniform compressive sealing force along the flange when the first member is in a closed position relative to the opening.

A latch assembly for a heating, ventilation, and/or air conditioning (HVAC) enclosure includes a latch having a securement portion configured to couple to an access panel of the enclosure and having a rotational portion. The rotational portion has an engagement feature configured to engage with a tool face or a tool receptacle and the rotational portion has a first retainer adjacent to the engagement feature. The rotational portion is configured to rotate relative to the securement portion such that a locking portion of the rotational portion transitions between a closed configuration and an open configuration. The latch assembly includes a handle accessory having a handle engagement driver configured to engage with the engagement feature of the rotational portion along a first linking axis and having a second retainer configured to couple with the first retainer of the rotational portion along a second linking axis, transverse to the first linking axis.