Talk to your supplier about the type of wood/fuel burner you need and about the flue liner you need to serve it. Servicing a heating and cooling system involves a lot of work and there are some people out there who don't do it properly. While you may not give much thought to the HVAC system in your home, it does a lot of important jobs for you and your family. Most people would be amazed at what is floating around in the air in their homes.