It’s recommended that your HVAC system is checked and serviced twice a year by an HVAC contractor; ideally a Spring and Fall tune-up. Proper maintenance will ensure that your HVAC system is operating at peak performance. There may also be small problems that could turn into large problems. An HVAC system is mechanical and has components that should receive attention regularly. Most importantly, having a system checked can help keep you safe in the event of a gas or fume leak.