Our upstairs floor was always really cold after our original renovation. We called several companies and Greensaver was one of them (saw them on the Toronto Hydro Website). Don came and actually went into the attic (the other companies either quoted me on the phone "Over 600 companies work in Toronto doing attics so I wont come over" or just put their head in the hole and looked), took digital pictures and was very thorough in his explanation of what he saw and recommended. Jean at the office was great as well and very prompt. Two weeks later they came in and did an outstanding job and the house is dramatically warmer and less drafty and our young boys now sleep through the night! Great work Greensaver!