Its nice when we buy a piece of equipment and Have it installed by a professional. A certain piece of mind ensues that this is something I will not need to worry about for Ten years. Well nothing can be farther from the truth. It is true that New units come with a ten year warranty, But Every mfd requires the unit be registered by the home owner or the warranty goes away after five years. We register the units for the customer, In the customers name. Many contractors don’t. If you had someone else install your system for you, Find out and ask if they register it for you if not, please do. Call us and we will assist you.