Lyon Sheet Metal & Heating customers know they can count on us to deliver honest, reliable, experienced furnace repair, experienced central air repairs, service, installations and maintenance. Our technicians are some of the best in the industry. We offer the best product and brand to our clients which is Bryant. How long will your HVAC system last? Many different organizations, companies, and website will give you a different answer. National Association of Home Builders and Band of America found that forced-air systems last an average of 15 to 20 years. Homeowner’s system lifetime can very base on who installed the system, how well you maintain the system, and what brand you currently own and want to buy. So, your system will last as long as you want it to. Heating and cooling systems are complicated which means not just anyone is going to be able to install a heating or cooling system in your house. More than ½ of new systems in U.S...