In the distant future, thermal air conditioning with cold fusion, or with a cold fusion cogenerator waste heat, might be possible. The waste heat will heat the house in winter. In summer it will be dumped out, so perhaps it can be used to run an air conditioner. I think this might be cheaper than today's air conditioners, but I am not sure. So, for now I will leave the $5,651 as is. I will assume it is powered by the cogenerator. Air conditioners draw 2 to 4 kW. With thermal air conditioning, you might get by with a smaller cogenerator.
I would like to see the waste heat from such systems warm massive human habitats in frigid, inhospitable regions of the world, allowing for a multitude of independent high tech civilizations to emerge.