Technician arrived to perform a second opinion on a commercial business technician found the north systems rollout, which was in fact dropping out as well as the south east rooftop unit has a compromise heat exchanger also found the east units inducer motor bearings were failing as well as a faulty control board that would sometimes kick the heat on sometimes wouldn’t technician also inspected the lobby unit and found that the heat exchanger has a giant hole technician shut off the gas to the unit per company policy and informed the building occupants. They will review the estimates and let us know which route they wanna go will email the estimates and go from there.