Annual maintenance on a new Amana s variable speed heat pump and a Daikin mini split heat pump. Both systems are in fantastic shape and running as they should. Checked operation in both heat pump and the electric heat on the central system and checked the heating operation on the mini split. Treated the evaporator coil on the mini split to make sure the coil stays clean and changed the 16x30x1 air filter in the home. The systems are ready for the winter months ahead.