I recently performed a spring maintenance and tuneup on three Mitsubishi ductless split systems for a homeowner in the town of Fire Island. This involved checking and cleaning the filters, testing the operation of the systems, and adjusting the settings to optimize performance. I also lubricated moving parts and checked for any signs of wear or damage. By performing this maintenance, I helped ensure that the systems were operating efficiently and safely, providing the homeowner with reliable heating and cooling throughout the spring and summer months.