In short, yes. While there are some simple things that almost anyone can do to keep their HVAC systems running smoothly, such as changing the air filter regularly and keeping the areas around air returns and vents clean, the best way to ensure your system will work efficiently and not need frequent repairs is to invest in a maintenance plan. Hart Heating & AC has a convenient HVAC maintenance program that provides significant benefits to members, including energy savings, breakdown prevention, priority service and discounts on repair and replacement services.