Kosin store outdoor sound systems

This is my friend's 3.5-ton York Affinity Series 3S (13 SEER) central air-conditioner from 2006. It is a straight-cool unit, not a heat pump, and it is matched up with an air handler. The central A/C system has no heating capability whatsoever. The home's heating system is the original hot water baseboard heating system, with an oil-fired boiler. The house is located kind of out in the boonies, so there is no natural gas or propane, and it has no public water or sewage. There are a well and a septic tank located on the property. The house was built in 1961, and DID NOT originally have central A/C. It is a 2-story, 4 bedroom, 2½ bathroom colonial, with approximately 2200-2300 square feet of central air-conditioned living space. The house also has a decent-sized finished basement that is NOT air-conditioned. The central air and the heating system are separate from each other, and are controlled by separate thermostats. The air handler for the A/C system is located up in the attic, and because of the unique construction of the old house, the contractors had to get a little creative with the installation of the ductwork. They could not fit all of the ducts out of sight, and in one first floor closet, a duct is hanging down from the ceiling. This DOES NOT affect the performance of the A/C system, it just looks unsightly and takes up space. The thermostat for the A/C is located in the hallway on the second floor, and the switch says "COOL", "OFF", and "HEAT", so it could be ...