Furnace repair call for the main floor system. Found system with no freon inside heatpump. Found oil residue on the suction side of Lineset. Braze leak, cleared line, pressure tested and pulled vacuum to 525 microns. No leaks present at this time.Charged system to manufacture specifications. Indoor dry bulb at 70 degree with outdoor of 51-52 degree. The system is heating at this time.