My fireplace would not start up, so I started my research for someone local who was highly rated. I found GTA Heating and Air Conditioning Inc. was a GOLD Dealer for my brand of fireplace so gave them a call. After describing the symptoms, Mike was able to provide me with a high and low range for the repair, and was able to come within a few days which was great. On the arranged date, he let me know he was going to be a little late, and arrived at the revised time. His first step was to thoroughly clean the fireplace and replaced the ignitor. Although he was able to get it going, it would not stay lit. After several attempts he indicated because I had a mercury switch, I needed a complete upgrade kit. This meant the repair was going to be the high side of his estimate and would require another visit. Once the kit came in, we arranged for his second visit a few days later. Mike arrived on time and started the task of gutting the fireplace in preparation for the upgrade kit. I was amazed at what he had to do to install the replacement kit. As Mike put it, he replaced the heart of the fireplace. He did a great job and cleanup everything up when the job was done. The fireplace has been working great ever since and it looks really nice now that we can see through the glass. Overall, I was very satisfied with the quality of the work that Mike did and would not hesitate to recommend them for fireplace repair. I will definitely call them again should I need any further work done. [Please note, that there is another company called GTA H & A on Homestars, but it is not the same company].