The first call of the day is from the owner of a strip mall. There is a post office in the mall that is serviced by a 10-ton heat pump. The owner told the dispatcher that the post office had called and complained about the electric utility bill for the last two months. It seems that it is much higher than usual.
The day is cold for early spring, 40 degrees F, so Bob would get to operate the heat pump under heating conditions without overheating the conditioned space. The indoor coil is in an equipment room with plenty of space around it and the outdoor unit is on the roof.