Abstract: Systems and methods are disclosed that calibrate a defrost threshold used to determine when a heating, ventilating, and air conditioning (HVAC) system enters a defrost mode, and, more particularly, determine frost temperature differences used to determine the defrost threshold when the HVAC system is in a stable condition. A frost temperature difference is a difference between an outdoor ambient temperature and a refrigerant temperature. The HVAC system determines that it is in the stable condition by determining that a standard deviation of a current frost temperature difference from a previous frost temperature difference is below a standard deviation threshold. When the HVAC system is in the stable condition, the frost temperature differences are determined, and the defrost threshold is determined from the frost temperature differences.

Abstract: A heating, ventilation, and air conditioning (HVAC) system may include a HVAC unit that may control air flow, a first control system that may directly control operation of equipment in the HVAC unit, and a second control system communicatively coupled to the first control system. The second control system may be located in a different zone of a building as compared to the first control system, such that the second control system may receive a request to adjust the air flow output by the HVAC unit and send a command to the first control system based on the request. The command may cause the first control system to adjust the operation of the equipment in the HVAC unit to cause the air flow output by the HVAC unit to be adjusted according to the request.

Abstract: A tangible, non-transitory, machine-readable medium includes instructions that, when executed by a processor, cause the processor to determine an active operating condition of the heating, ventilation, and/or air conditioning (HVAC) system based on the active operating data related to the HVAC system, retrieve an existing service log having a maintenance procedure corresponding to the active operating condition of the HVAC system, and record an entry service log. The entry service log includes the active operating data, the active operating condition, and an updated version of the maintenance procedure corresponding to the active operating condition.

Abstract: The present disclosure includes a heating, ventilation, and air conditioning (HVAC) system having a control system suitable to control operation of a device in the HVAC system. The control system may include a zone control panel that may control operation of the device using power-line communication. Accordingly, the zone control panel and the device may be both communicatively and electrically coupled via one or more power lines. To that end, the zone control panel may determine a primary address identifying the device and/or a secondary address indicating the one or more power lines electrically coupled to the device. Further, the zone control panel may communicate with and/or coordinate operation of the device by transmitting data messages to the device via the one or more power lines based on the primary address and/or the secondary address.

Abstract: The present disclosure relates to a zoning system for climate control including a controller configured to operate the zoning system to supply conditioned air to a first zone of a plurality of zones through a first supply air damper to thermally charge the first zone. The controller is also configured to close the first supply air damper of the first zone and open a second supply air damper of a second zone of the plurality of zones after the first zone is thermally charged. The controller is further configured to operate the zoning system to draw the conditioned air from the first zone and supply the conditioned air to the second zone through the second supply air damper.

Abstract: In one embodiment of the present disclosure, a heating, ventilating, and air conditioning (HVAC) system includes a refrigerant circuit configured to flow a refrigerant. The refrigerant circuit includes a compressor configured to compress the refrigerant, a condenser configured to receive the refrigerant from the compressor and to condense the refrigerant, a valve configured to receive a first portion of the refrigerant from the condenser and to decrease a pressure of the first portion of the refrigerant, and an evaporator configured to receive the first portion of the refrigerant from the condenser and configured to evaporate the first portion of the refrigerant. The refrigerant circuit also includes a refrigerant sub-circuit configured to receive a second portion of the refrigerant from the condenser and to convert thermal energy of the second portion of the refrigerant to electrical energy.

Abstract: The present disclosure relates to a flow generating device for a heating, ventilation, and/or air conditioning system. The flow generating device includes a housing having a channel defining a flow path of a fluid and a fan blade having a rotational axis extending through the channel, where the fan blade is configured to rotate to force the fluid along the flow path. A portion of the fan blade axially protrudes beyond the channel in a direction generally aligned with the flow path and a winglet extends from the portion of the fan blade.

Abstract: A climate management system includes a controller configured to receive an input indicative of an airflow rate setpoint for each zone of a plurality of zones of the climate management system. The controller is further configured to determine a respective airflow rate adjustment for each airflow rate setpoint and adjust each airflow rate setpoint based on the respective airflow rate adjustment to determine a respective adjusted airflow rate for each zone of the plurality of zones, where the respective airflow rate adjustment for each zone of the plurality of zones is based on a current annual season of a plurality of annual seasons.

Abstract: The present disclosure relates to present disclosure relates to a heating and cooling system having a duct liner configured to be disposed within an air duct and at least partially downstream of a heat exchanger coil relative to a direction of airflow within the air duct. The duct liner includes a tube and is configured to flow fluid from the heat exchanger coil toward a drain of the heating and cooling system.

Abstract: The present disclosure includes a heating, ventilation, and air conditioning (HVAC) system having a control system suitable to control operation of a device in the HVAC system. The control system may include a zone control panel that may control operation of the device using power-line communication. Accordingly, the zone control panel and the device may be both communicatively and electrically coupled via one or more power lines. To that end, the zone control panel may determine a primary address identifying the device and/or a secondary address indicating the one or more power lines electrically coupled to the device. Further, the zone control panel may communicate with and/or coordinate operation of the device by transmitting data messages to the device via the one or more power lines based on the primary address and/or the secondary address.

Abstract: The present disclosure includes a heating, ventilation, and air conditioning (HVAC) system having a zone control panel suitable to control operation of equipment and/or devices in the HVAC system. The zone control panel may include an electronic display to facilitate user interaction with the HVAC system. For example, the electronic display may be used to view, configure, and/or modify operation of the zone control panel and/or other devices implemented in the HVAC system. Further, the zone control panel may use the electronic display to reproduce user interfaces from the equipment and/or the devices. As such, the zone control panel may centralize presentation of relevant information and/or present the relevant information in a familiar manner.

Abstract: The present disclosure includes a heating, ventilation, and air conditioning (HVAC) system having a zone control panel implemented to control operation of equipment in the HVAC system. The zone control panel may determine occupancy and/or an indication of occupancy of a space in the HVAC system based at least in part on motion detected by an occupancy sensor. Accordingly, the zone control panel may control the operation of the equipment based at least in part on information received from an occupancy sensor. As such, the zone control panel may more rapidly condition air and/or more suitably adjust the airflow to an occupied space in comparison with an unoccupied space.

Abstract: The present disclosure includes systems and methods for dynamically generating and/or displaying a barcode for installing a thermostat. The dynamically generated barcode may indicate information related to a registering a warranty for the thermostat, conditioned air equipment information, and the like. The thermostat includes conditioned air equipment determination logic that determines conditioned air equipment. The thermostat also includes barcode generation logic that dynamically generates the barcode based on the conditioned air equipment. Authorized service personnel may scan the barcode with a mobile device and pair the mobile device with the thermostat based on information received via scanning of the barcode. To that end, the disclosed systems and methods may dynamically generate the barcode used to pair the thermostat with the mobile device, along with providing additional information relevant to installing the thermostat.

Abstract: A heating, ventilation, and air conditioning (HVAC) system may include a HVAC unit that may control air flow, a first control system that may directly control operation of equipment in the HVAC unit, and a second control system communicatively coupled to the first control system. The second control system may be located in a different zone of a building as compared to the first control system, such that the second control system may receive a request to adjust the air flow output by the HVAC unit and send a command to the first control system based on the request. The command may cause the first control system to adjust the operation of the equipment in the HVAC unit to cause the air flow output by the HVAC unit to be adjusted according to the request.

Abstract: The present disclosure includes systems and methods that facilitate quickly and conveniently addressing faults experienced by conditioned air equipment by dynamically generating a barcode on a thermostat. In some embodiments, the thermostat includes fault determination logic that determines that the conditioned air equipment is experiencing a fault and barcode generation logic that generates a barcode based on the fault. The authorized service personnel may scan the barcode using a mobile device and receive information about the fault. In this manner, the dynamically generated barcode may be used to quickly and conveniently address faults of the conditioned air equipment, repair the conditioned air equipment, perform maintenance on the conditioned air equipment, and the like.

Abstract: A heating, ventilation, and air conditioning (HVAC) system includes a controller associated with a residence. The controller is configured to determine an expected value range for an operating parameter of a component of the HVAC system. Additionally, the controller is configured to receive a signal from a sensor indicative of a current value of the operating parameter of the component and determine if the current value of the operating parameter is outside the expected value range. Based on the determination that the current value is outside the expected value range, the controller is additionally configured to initiate a diagnostic mode of the controller. In the diagnostic mode, the controller is configured to collect diagnostic data associated with the HVAC system.

Abstract: In one embodiment of the present disclosure, a heating, ventilating, and air conditioning (HVAC) system includes a refrigerant circuit configured to flow a refrigerant. The refrigerant circuit includes a compressor configured to compress the refrigerant, a condenser configured to receive the refrigerant from the compressor and to condense the refrigerant, a valve configured to receive a first portion of the refrigerant from the condenser and to decrease a pressure of the first portion of the refrigerant, and an evaporator configured to receive the first portion of the refrigerant from the condenser and configured to evaporate the first portion of the refrigerant. The refrigerant circuit also includes a refrigerant sub-circuit configured to receive a second portion of the refrigerant from the condenser and to convert thermal energy of the second portion of the refrigerant to electrical energy.