If, for example, it's cold and overcast outside and its building's internal temperature is below a given desired temperature, the device would generate its effort to heating the building.

例如，天气冷阴，其建筑物的内部温度低于某一特定需要的温度时，设备会提高功率加大产热效能来提高建筑物的温度。

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On a clear day you can see 80 miles and five states and on an overcast one you are floating in the clouds, detached from the world below.

BBC: At 80, the Empire State Building strikes back