I considered many installers for a solar PV system for our home in downtown Toronto. I hesitated going with Guelph Solar, just because of the distance, but they were competitive on cost and great to deal with in the early stages. I don't regret my decision. We're up and running, and I'm very happy. Everyone I dealt with was friendly, helpful and professional. Any time I had questions (and I had plenty), I got very prompt and thorough responses. A few issues arose along the way, although nothing major. Some were beyond Guelph Solar's control. But whether the cause was within their control or not, they made the issue their problem to solve, not mine. I felt throughout that I was in very good hands. I would happily recommend Guelph Solar.