Abstract: A method of heating a component within a heating, ventilation and air conditioning (HVAC) system is provided. The method includes maintaining a non-heating condition of the HVAC system component when the HVAC system component is in a non-operational state. The method also includes determining when the HVAC system component will switch from the non-operational state to an operational state, the determination based on a threshold parameter being met. The method further includes operating a heating device from the non-heating condition to a heating condition to heat the HVAC system component from a temperature to a target temperature suitable for the operational state of the HVAC system component.

Abstract: A method of heating a component within a heating, ventilation and air conditioning (HVAC) system is provided. The method includes maintaining a non-heating condition of the HVAC system component when the HVAC system component is in a non-operational state. The method also includes determining when the HVAC system component will switch from the non-operational state to an operational state, the determination based on a threshold parameter being met. The method further includes operating a heating device from the non-heating condition to a heating condition to heat the HVAC system component from a temperature to a target temperature suitable for the operational state of the HVAC system component.

Abstract: An enclosure includes a housing having an opening and a seal land adjacent to the opening. A cover has a plurality of ribs and is configured to be fastened to the housing to cover the opening such that the plurality of ribs are sealingly engaged against the seal land.

Abstract: An enclosure includes a housing having an opening and a seal land adjacent to the opening. A cover has a plurality of ribs and is configured to be fastened to the housing to cover the opening such that the plurality of ribs are sealingly engaged against the seal land.

Abstract: A system and method of controlling an oil flow within a refrigeration system, the system including a compressor, an expansion device in flow communication with the compressor, and an electronic controller in communication with the expansion device and the compressor, wherein the electronic controller is configured to operate in an oil return mode based at least in part on an operational speed and a continuous operational run time of the compressor.

Abstract: The practice drumstick comprises an inner core and an outer sheath. The outer sheath is constructed of a material or materials suitable to absorb energy and sound to result in significant reduction in: a) the sound produced by practice drumming, and b) physical damage to any surface struck by the practice drumstick.