Learn more about how maintaining your HVAC can extend the life of your residential or commercial HVAC unit, save you money, and improve your indoor air quality in this article by Victory Heating & Air. How much would it cost to replace your HVAC unit? What would you say if you knew that regular maintenance of your current HVAC unit would likely prolong its life, thus pushing back its replacement. How much money would you save each month if your HVAC system ran at peak efficiency? Would changing the filters in your HVAC cause you to sleep better at night, and breath easier in the daytime? The answer is likely yes to both questions.