Another thing to remember is the humidity levels. During this period, dendrobiums do not need a lot of moisture. Very little water will be enough to keep their roots alive. Also keep in mind that their roots constantly need plenty of air circulation so you should place them where there is a lot of fresh air.
Remember, that is based on energy usage, not comfort-levels, which are the purpose of having an air conditioner, in my not-so-humble opinion. Fact: At night, the ideal temperature comfort range for Americans drops to 65 to 72 degrees Fahrenheit (or about 87 degrees if you are my wife).
6. Turning your thermostat to 78 degrees Fahrenheit is the best setting for your air conditioner during warmer months. Reducing your home's temperature 72 degrees Fahrenheit could increase your cooling costs 12 to 47 percent. Also remember, setting it really low at first will not help your home cool faster.