We had the fans in a gas fireplace replaced by Kirkstone, and shortly after, the fireplace started randomly shutting off. We weren't sure if it was related to the new fans, but Kirkstone came back right away, and even though it took multiple tries with multiple parts, they figured out the problem (which was complicated and unrelated to the fans they installed!) and didn't give up until it was fixed. Totally impressed. Harvey is especially amazing! We'll use them for all of our HVAC service from now on.