If you have recently moved into a property which has an HVAC system installed, it may seem like a bit of a mystery to you. However, this doesn't have to be the case. If you take the time to do a little bit of research into how the system is constructed and how to operates, you will be able to ensure that it is supplying you with air which is at just the right temperature. If any problems develop you will be able to diagnose them. My brother who is an HVAC contractor has given me some top tips which I would like to share with you.