You should have a qualified professional service technician do annual preventive maintenance on the air conditioner and the furnace. It helps you get the most out of your cooling and heating systems and ensure they are reliable. A yearly visit by a qualified HVAC technician is required as part of the warranty requirements for the majority of brands.
In a simple maintenance plan, a trained technician will come to your home twice a year to check on the fitness of your heating and cooling system. You should have your home checked out in the spring and fall to ensure it’s ready for the sizzling and coldest days of the year.