Igor and his team (installer Vitaliy) were professional, attentive with their workmanship and responsive with any questions we had thoughout the process. We replaced 8 windows and our installation fortunately was able to complete all in 1 day, very efficient. Given our installation date landed in February, all in fairness, it was challenging for Igor's team to ensure cleaniness ( amidst snow/salt/ice). Thank you again Igor and Vitaliy for your hard work and would recommend Comfortec.All Reviews