Last August we had central air installed in our attic, running down to the 2nd and 1st floors. The unit is a Trane xl14i, with a variable speed handler. If we are at home during hot days will we be more comfortable setting the thermostat to run rather than auto? If so, what is the difference in energy consumption.
If it makes a difference, I think that the installer went oversized at 3.5 tons. Other bids had called for 3 tons, but the installer convinced me that 3.5 was better (said that calcs were on the border, though he never showed them to me). Last August, I thought the a/c was running short cycles, and attributed this to being oversized.