"ServicePlus : - Heating, Ventilation, and Air Conditioning (HVAC) systems are crucial for all buildings and require regular maintenance, just like any other appliances or systems. If maintenance isn't done properly, your system could lose up to 5% of its efficiency every year! Most HVAC service providers recommend having your system inspected and tuned twice a year: once before the fall when you start using heating and once in the spring before you switch to cooling. Let's explore why regular preventive maintenance for your HVAC system is essential, what factors to consider, and which tasks need to be done. Finally, we'll provide a maintenance guide to assist you through the entire HVAC preventive maintenance process."