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Can you save money by lowering the thermostat?
One of the factors that affects the cost of cooling a building is the outside temperature. It's cheaper to cool a building when it's 75°F outside than when it's 105°F. This got me thinking: would it save money if I lowered the thermostat when it's cooler outside than inside?
For example, I keep my A/C at 75°. A strong thunderstorm just came through and lowered the outside temp from 85 to 70. It's going back up now. I thought that if I lowered the thermostat to say 72° for a while and then put it back to 75°F, I'd save some money while the house returned to 75°. Of course if this really works, the thing to do would be to hook up an outside thermometer, or connect the cooling system to the internet. Before I do any of that I thought I'd see if this actually might save on energy. Thoughts?
1929 Ideal Heating vapor system.