An HVAC contractor whom I've known for 20 years and who is a family friend swears by Janitrol. He told me he could sell me Trane, but it wasn't worth the extra money. He also told me that any Trane installation is practically guaranteed to have a service call within six months of installation.
Of course, I took that last remark with a grain of salt until I talked to my aunt earlier this week. She just moved into her newly-built home in November featuring a Trane HVAC system.
Guess who didn't have heat coming from the second floor heating unit?