A method of operating an HVAC system using a controller includes predicting a first predicted temperature of an enclosed space during an unoccupied time with the HVAC system off. The controller determines if the first predicted temperature is less than a set-point temperature. Responsive to a determination that the first predicted temperature is less than the set-point temperature, the controller predicts a second predicted temperature of the enclosed space if the HVAC system is operated for a first runtime. The controller determines if the second predicted temperature is less than the set-point temperature and, responsive to a determination that the second predicted temperature is not less than the set-point temperature, the controller operates the HVAC system for the first runtime.

A partition includes a first structure, a deformable partitioning portion connected to the first structure, and an air-environment adjusting portion disposed at at least one of the first structure and the deformable partitioning portion. The deformable partitioning portion has a first end portion on a side connected to the first structure and a second end portion on a distal side from the first end portion. The deformable partitioning portion partitions a predetermined space with respect to an adjacent space. The air-environment adjusting portion includes at least one of a cooling portion configured to cool air, a heating portion configured to heat air, and an airflow generating portion configured to generate an airflow.

Heat pump system (100) comprising at least one heat medium circuit (210,220,230,240,250,310,320,410,420,430,440,450,460) in turn comprising a compressor (211), an expansion valve (232,242), at least two different primary heat sources or sinks selected from outdoor air, a water body, the ground or exhaust air, at least one of two different secondary heat sources or sinks selected from indoors air, pool water and tap water, a respective temperature sensor (412,432) at each of said primary heat sources or sinks, a valve means (421,431,451) for selectively directing the primary-side heat medium to at least one of said primary heat exchanging means, and a control means (500). The invention is characterised in that, in a secondary-side heating operating mode, the temperature of said primary heat sources or sinks is measured, and in that the primary-side heat medium is directed only to available primary heat exchanging means associated with the heat sources or sinks with the highest temperature. The invention also relates to a method.

A heat source optimization system capable of alternating configurations between an air exchange system and a geothermal system and/or earth loop systems depending on an instantaneous need and/or desire for taking in or discharging heat, while simultaneously remaining operational and without reversing valving or changing the rotational direction of a refrigerant compressor. The system manages refrigerant, and, via a processor and/or controller system, determines where to obtain refrigerant and also the quantity of refrigerant to be obtained. Additionally, the system, via a processor and/or controller system, both determines the optimal location or locations from which to take in heat or to which heat is to be rejected.

A partition includes a first structure, a deformable partitioning portion connected to the first structure, and an air-environment adjusting portion disposed at at least one of the first structure and the deformable partitioning portion. The deformable partitioning portion has a first end portion on a side connected to the first structure and a second end portion on a distal side from the first end portion. The deformable partitioning portion partitions a predetermined space with respect to an adjacent space. The air-environment adjusting portion includes at least one of a cooling portion configured to cool air, a heating portion configured to heat air, and an airflow generating portion configured to generate an airflow.

A method of operating an HVAC system using a controller includes predicting a first predicted temperature of an enclosed space during an unoccupied time with the HVAC system off. The controller determines if the first predicted temperature is less than a set-point temperature. Responsive to a determination that the first predicted temperature is less than the set-point temperature, the controller predicts a second predicted temperature of the enclosed space if the HVAC system is operated for a first runtime. The controller determines if the second predicted temperature is less than the set-point temperature and, responsive to a determination that the second predicted temperature is not less than the set-point temperature, the controller operates the HVAC system for the first runtime.

A control device for an HVAC system is provided. Embodiments of the present disclosure generally relate to control devices that facilitate adjustment of heating and cooling setpoints. In one embodiment, the control device allows for concurrent adjustment of the heating and cooling setpoints while maintaining a desired deadband value therebetween.

The present disclosure relates to a thermostat including a control base configured to couple with and support a portable thermostat, wherein the control base is configured to determine a measure of an environmental condition of a local environment of the control base and communication circuitry of the control base configured to communicate the measure to facilitate control of an HVAC system.

The present disclosure relates to a thermostat including a control base configured to couple with and support a portable thermostat, wherein the control base is configured to determine a measure of an environmental condition of a local environment of the control base and communication circuitry of the control base configured to communicate the measure to facilitate control of an HVAC system.

A heat-pump air-conditioning hot-water supply device includes a first refrigerant passage connecting a compressor and a decompressor, a second refrigerant passage branching from between the compressor and a first solenoid valve and connecting a second solenoid valve, a hot-water supply heat exchanger, and the decompressor, a pressure sensor configured to measure discharge pressure of the compressor, and a control device configured to adjust an operational frequency of the compressor and adjust an opening degree of a valve of the decompressor. The control device is configured to calculate a condensing temperature from the discharge pressure, and perform operation in one of an air conditioning prioritized mode in which a preset operational frequency of the compressor is changed, and an energy saving prioritized mode in which the opening degree of the valve of the decompressor is changed, when the condensing temperature is not lower than a set condensing temperature.