Initially knowledgeable and friendly salesperson, albeit somewhat arrogant and condescending. After sales agreement signed, attitude changed and installers were unable to deliver what salesperson promised. Resulted in furnace exhaust protruding unattractively into basement tenant's main entrance, blowing directly at anyone using the doorway. Apparently no other place to put it, despite salesperson assuring me it would be no problem prior to sale. Also, the "1-day installation" took 3 separate days that I had to be at the house during the week, each time the crew did not start until after 11am. Installer expressed concern as to future problems with the AC unit based on location, and salesperson immediately started to backpedal on the 10 year warranty that he pitched as better than the competition and assured me that I would "not be rolling the dice". Basically installation and service were much worse than I was lead to believe based on what the patronizing salesperson told me. Would not recommend to anyone, horrible experience for the amount we spent. So far furnace has worked properly, after 1 day.