We are extremely satisfied with Zen Windows! We already had a bid from another ‘well-known’ window company and decided to contact Zen Windows. Requesting a bid was extremely easy as it was all online and there was no in-home visit from a pushy salesman. Dennis responded to our bid request almost immediately! He answered all of our questions and he was very patient with the many changes we made to our original bid (different style window, type of window coatings, number of windows, etc). In fact, some of our change requests were more expensive, but Dennis explained how these changes wouldn’t be worth the extra cost. We even had some unique grid patterns on our original windows that they matched. It would’ve been nice to see a sample window in person, but there were really good You-Tube videos on this brand of windows that helped us make the decision. After some research, we chose to have Zen Windows replace 13 of our construction-grade windows in our 14-yr old house. Their bid was lower than the other bid we received AND the windows that they install are better (based on the reviews and specs found online). Our windows were ready for installation 5 weeks after Dale came to our house to measure. The installer, Eddie, explained the installation process and also explained details of the windows after they were installed. We were told that it would take 2 days to install our 13 windows, but Eddie and his crew did it all in one day. They were very professional and were very considerate since I work from home. Dennis and Dale even came by to see how the installation was going. We had several windows replaced on the South-facing side of our house, which would get pretty hot in from the sun. We ordered the “Solar Low-E” coating on these windows and there has been a very noticeable decrease in temperature in these rooms! Eddie even came back a few days later to fix some cosmetic concerns I had with the trim (had nothing to do of the functionality of the windows, I am just picky). We thought we had a problem with one window after it rained, so Eddie came out again. He found no issues when he inspected the window but proceeded to add more insulation around the window anyway - no problems since. Not once did Eddie appear to be “bothered” by coming to our house after the initial installation – he was always professional and I could tell that he wanted us to be satisfied with the windows. They install high quality windows, are very professional, and their service is exceptional! Dennis was very attentive and responded promptly to all of our questions and concerns. Zen Windows is a great company to work with!