17.2 SEER2 Variable Speed AC and Two Stage 80% Efficient Furnace with variable speed fan. Technicians installed new full system. Technicians installed new thermostat. Technicians also reconnected to existing supply and return plenums but added in a new media filter base. Technicians performed a furnace start uo and will be back in the Spring to perform an A/C start up. System works great at this time.