Your HVAC system plays a major role in keeping indoor temperatures in your home at a comfortable level, and it requires proper maintenance to function efficiently. While you may be tempted to try to repair the unit yourself or to hire anyone with a little handyman experience to do it for you, you should really consider leaving the task to a NATE-certified HVAC repair expert. In this blog post, Dittmer Air and Heat explains why this is the best idea,