Dirt, day-to-day operation, and a lack of lubrication can age your HVAC system. Routine maintenance attacks the problem from two angles: cleaning and lubricating your parts and undoing signs of wear and tear. Annual maintenance can:
Improve your energy efficiency, bringing down your utility bills
Help your system to outlive its service life — a clean, lubricated, and repaired system suffers from far less wear and tear
Improve safety by checking your electrical connections and reducing overheating that can lead to fires
Prevent disruptions by catching problems before they lead to widespread repairs