Jim quickly responded to my distress call in the dead of winter and repaired my ancient furnace. He then, at my request, gave me a reasonable quote for a new heating and A/C system and did a flawless install. In addition, he has installed a Nest thermostat and Door lock which we love. Jim is very knowledgeable and quick to respond. I'm planning on having him add more Nest products soon and he is my go to for maintenance when it will be needed in the future.