But in reality, Trane and Lennox are tight with who they sell to. 95% of the contractors who sell and install that equipment will be reliable dealers. I know there is always and exception and you can get things off the internet and yada, yada.
Gooman on the other hand............well anyone can go buy one of those and install it. So very often a hack with a station wagon full of flex duct and duct tape use Gooman.
There are also very many reliable Gooman dealers as well. If you go that route that is when you really have to check out who is giving you such a great price.
I have a Gooman it came with the house and it work's ok just not enough
blower to keep the back two bed rooms cool or warm.
I love the smell of phosgene first thing in the morning: