The electrician just showed up and it turns out there IS power to the boiler. That means it is not some horrible meltdown in the walls. Not that it will be fixed quickly or cheaply... but it has to be cheaper than ripping out and replacing wiring in the walls. He is still looking at it. But it may just be a single broken piece and it may be under warranty. Oh, the simple joys! It is like thinking they will have to amputate your leg and finding out it is just your foot.