HVAC Service: condenser acid wash. Met with David to confirm work orders. Removed the disconnect switch to the unit, along with the condenser sheathing. Cleared off all debris and sprayed the unit with the condenser acid wash. Allowed to penetrate and clean the coils. Hosed off the unit with water. Reassembled the sheathing to the condenser. Reconnected the disconnect switch and observed the unit cycle. Spoke with Robert regarding leveling the heat pump condenser. It’s at an incline. Discussed with customer and issued estimates / recommendation. Follow up appointment necessary. However, completed today's service. Plumbing service: Snaked bathroom sink drain to clear clog in line. Tried to unclog Bathroom sink, but seems that the galvanized waist line is all scaled and won’t budge. Sink is still clogged because of scale in line. Customer would like to follow through with replacing the waist line from the stack to bathroom traps. Will have to go back to replace the pipe. Addition