I often see some guys praising a certain brand and then turns out they are their autorized dealer. I had a guy come out to give me an estimate. He was pushing a certain brand. He admitted being an authorized dealer for that brand, but he said he could install another brand too.
What is the difference to the installer which brand to install? As an authorized dealer do they get bigger discount on the unit and that's why they are pushing it? Would they be a lot less competitive on the other brand, compared to the authorized dealer?