A firestat for providing an output for controlling an opening and closing of a fire/smoke damper. The firestat includes a fire/smoke damper test switch and an actuator configured to depress the fire/smoke damper test switch. The firestat is further configured to release the fire/smoke damper test switch in response to a depressing force applied to the actuator, wherein melting or other damage to the actuator causes a release of the test switch.

A vehicle register assembly includes a register duct that has an end opening and the register duct directs air. A housing is coupled to the register duct proximate the end opening. A barrel is disposed within the housing and defines an upstream aperture and a downstream aperture. A plurality of vanes includes individual vanes and the individual vanes extend in a first direction between first opposing sides of the barrel. A linking vane is coupled to each of the individual vanes and extends between second opposing sides of the barrel. The linking vane includes a guide body that extends upstream from the plurality of vanes.

An air diffuser assembly for transferring airflow from an HVAC system to an environment. The air diffuser assembly comprises a body at least partially located in a duct of the HVAC system and a cover including at least one vent assembly for permitting airflow through the cover and into the environment. The cover provides ambient lighting and light powered disinfectant powered by a passive charging system.

An air diffuser assembly for transferring airflow from an HVAC system to an environment. The air diffuser assembly comprises a body at least partially located in a duct of the HVAC system and a cover including at least one vent assembly for permitting airflow through the cover and into the environment. The cover provides ambient lighting and light powered disinfectant powered by a passive charging system.

An air purifier including an air filter, an air movement device configured to move air at least partially in an axial direction and through the filter, and a first exit path in fluid communication with the air movement device. The first exit path is configured such that at least part of the air moved by the air movement device exits the first exit path generally in the axial direction. The air purifier further includes a second exit path in fluid communication with the air movement device and configured such that at least part of the air moved by the air movement device exits the second exit path at an angle of between about 10 degrees and about 45 degrees relative to air exiting the first exit path.

A ceiling system is provided that has a ceiling structure suspended within a space of a building thereby dividing the space into an occupied space below the ceiling structure and a plenum space above the ceiling structure; a panel structure supported by the ceiling structure and having an opening; a pressurized air passageway aligned with the opening, the pressurized air passageway having an outlet; and an inductive air passageway adjacent the pressurized air passageway, the inductive air passageway having an inlet and an outlet. The pressurized air passageway and the inductive air passageway are configured such that pressurized air passing through the outlet of the pressurized air passageway induces an induced air flow out of the outlet of the inductive air passageway.

A ceiling system is provided that has a ceiling structure suspended within a space of a building thereby dividing the space into an occupied space below the ceiling structure and a plenum space above the ceiling structure; a panel structure supported by the ceiling structure and having an opening; a pressurized air passageway aligned with the opening, the pressurized air passageway having an outlet; and an inductive air passageway adjacent the pressurized air passageway, the inductive air passageway having an inlet and an outlet. The pressurized air passageway and the inductive air passageway are configured such that pressurized air passing through the outlet of the pressurized air passageway induces an induced air flow out of the outlet of the inductive air passageway.

A detection and control device for a supply vent of a heating or cooling system includes a housing attachable to the supply vent, a display configured to present a message to a user, at least one sensor configured to measure at least one parameter, and a central processing unit. The central processing unit is programmed or configured to receive an input from the at least one sensor, determine based on the input received from the at least one sensor if one or more of the parameters measured by the at least one sensor is within a predefined safe zone, and generate and communicate an instruction to turn off a component of the heating or cooling system based at least partially on a determination that one or more of the parameters measured by the at least one sensor is outside of the predefined safe zone.

A detection and control device for a supply vent of a heating or cooling system includes a housing attachable to the supply vent, a display configured to present a message to a user, at least one sensor configured to measure at least one parameter, and a central processing unit. The central processing unit is programmed or configured to receive an input from the at least one sensor, determine based on the input received from the at least one sensor if one or more of the parameters measured by the at least one sensor is within a predefined safe zone, and generate and communicate an instruction to turn off a component of the heating or cooling system based at least partially on a determination that one or more of the parameters measured by the at least one sensor is outside of the predefined safe zone.

A low-profile air-conditioning register includes a retainer, which has an air passage, a fin, an operation knob assembly, and a transmission mechanism. The air passage has an outlet port having a pair of short side portions and a pair of long side portions. The retainer includes a pair of inclined surfaces at a downstream end of the retainer. The fin is arranged upstream of the inclined surfaces and is swingably supported by the retainer with a fin pivot, which extends in an extension direction of the long side portions. The operation knob assembly is provided at a downstream section of the retainer. The transmission mechanism is configured to transmit a motion of the operation knob assembly to the fin such that the fin is swung in a direction of as opposite trend to an operated direction of the operation knob assembly.