I have researched and contacted many, many HVAC installers. I installed HVAC at another home last year and in this house only 3 short years ago. I wasn't sure a new system would solve my issues of a noisy (clanging) furnace and not getting cold A/C air up to the second floor. Other "experts" told me it was my ducts, that I couldn't change the air pressure in the home, all sorts of excuses. Most furnaces wouldn't fit into the tiny space allocated in this 15 year old home. I guess this job was too challenging for the other HVAC companies highlighted at Homestars. One of the first things they noticed was that my tankless water heater installed a year ago wasn't to code and needed to be remedied; they did this for me too. As it happens, I was already emailing back and forth with Dave a year ago regarding my issues and the causes; he teaches HVAC. Well, I have the best system: it's silent, it's cold upstairs, and I will look forward to silent and warm winters. Rob is the most professional guy out there, and believe me I know because I've spoken to a list of them. I've attached photos of Arthur and Andrew completing the work in the tiny space that others declined.