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).
Here's a sample energy-saving plan for the best thermostat setting during the summer: 1  During working hours, set the thermostat to 88 degrees for at least eight hours a day. 2  While you're home, move the thermostat to a more comfortable 78 degrees. While you're home, move the thermostat to a more comfortable 78 degrees. 2  During sleeping hours, change the temperature to 82 degrees for at least eight hours. 3  If you're away from home for extended periods, leave the thermostat at 88 degrees for maximum savings and minimal usage.