Don’t fall victim to these common HVAC myths! With all the information out there on how to best maintain your HVAC system, it can be hard to separate fact from fiction. Extend the life of your heating, ventilation and air conditioning system by learning the truth behind these myths. How often do you have to change the air filter in your HVAC system? Is a bigger HVAC system really better? Watch this video to find out the answers, and learn easy HVAC maintenance tricks.