It is safe to say that the HVAC system is the unsung hero in a household, especially if you live in a particularly warm area. No one wants to stay in a hot and humid house, no matter how beautiful and luxurious it is. That is why more and more homeowners are realizing the importance of keeping their air conditioning system functional for as long as they can. And above all, they want to avoid calling for air conditioning repair as much as possible because it can be a very time-consuming process. So what can you do to preserve the longevity of your AC unit and keep repairs at bay? Try these tips.