HVAC equipment warranties guarantee the integrity of comfort systems’ performance and contractually ensure manufacturers and installers are responsible for the repair or replacement of defective parts. Such guarantees offer consumers a sense of security as they consider investing thousands of dollars into their homes or buildings. And, as most contractors will attest, the more comfortable a customer is, the more willing he or she is to sign on the dotted line. http://www.achrnews.com/articles/134610-are-warranties-a-friend-or-a-foe