First time post...great site!
My question pertains to installing a gas furnace. Nearly all posts I've read indicate furnace manuafacture is less important than the quality of the person doing the install. What then makes a good install (assuming the correct size has been determined)? What can go wrong? In addition to connecting the gas line, electrical and duct work, what is left? I'm not trying to undermine the skill it takes to install a furnace but just trying to understand how one knows a good install from a bad one. Thanks is advance!