Installed new 18 SEER 5 Ton Variable Speed Communicating Heat Pump Air Conditioning System As part of AC installation removed original equipment. Installed auxiliary drain pan, air handler, mediaheat pump condenser, float switch, thermostat and heater. Wired in electrical. Transitioned new air handler to existing supply plenum. Pressure tested system. Leak checked. Checked operation in heat, cool and fan modes. Set up thermostat. Started system and checked operation. System operating to manufacturer's specifications. Registered equipment for warranty and left both warranty and permit for inspection purposes with homeowner.