I recently had several estimates done, and one of the companies that came to my home was Huff N' Puff. I had read good things about their installation, so I felt comfortable having the estimator come to my house. Once he got there, he was very rude to me. When he found out that I was an accountant, he went as far as to tell me that that must be the reason I was so cheap. He also tried to do the pressure sell. Stating that once he left my house that night, the price would go up another 10%. I find both of those things extremely unprofessional. Not to mention, they wanted to charge $800+ per window. Needless to say, I did not have my windows installed by them....I cannot comment on the installation.