I was hired to install a new AC unit in a home in Alaska. The unit was a high-efficiency model that was designed to work well in the cold climate of Alaska. The installation process was complex, as it required the unit to be installed on a concrete slab and the ductwork to be run through the walls. I worked with the homeowner to ensure that the unit was installed correctly and that the ductwork was properly insulated to prevent heat loss. The installation process took several days, but the homeowner was pleased with the results.