Several yrs. ago. I had Frank Fabian install a Weil/McLain high efficiency natural gas furnace in my Victorian home. I prefer natural gas therefore the the unit was based entirely on his recommendation. He sent Jim K. & his son Will to do the installation. My basement is not the nicest place to work in. The 2 guys however did a superb job. The Installation is a true work-of-art! It wasn't money well spent, it was money well invested! I have no reservations whatsoever of showing this installation to anyone who wishes to see magnificent workmanship. Jim even took it upon himself to do a system check & discovered a reverse connection to the zone valves that caused us a problem for 10 years. No one else found it in all that time. From that moment the problem was no more! Hat off to you Aces @ Fabian's. They don't come any better than you guys. Perhaps on a par, but no better. Are you cookies "World" Class? You bet you are! Is this company "World" class? You bet it is!!!!