ProActive Energy Systems
The upgrade is complete, and yesterday the temperatures hovered around the 100-degree mark. In total, the air conditioners ran 3:14, 5:52, and 5:49 on the first, second, and third floors respectively, and at all times each and every part of the house was comfortable. I don’t have a baseline to compare it to, but I do recall that in prior years the air conditioner on the third floor was unable to keep up, and therefore ran continuously.
The company that did the work is ProActive Energy Systems. They were courteous, cleaned up after themselves, and addressed other problems that they noted along the way, such as sealing the air conditioning unit for the second floor. If others in the area are considering taking similar measures, I would recommend this company.