After a couple of years of patching the old boiler together and keeping it running we finally got a new system in last year. Last week no hot water or heat!:smash: Transformer blew. He replaced it and then it does the same thing last night!:smash: WTF! I checked the main circut breaker and the fuse to the boiler was tripped. My wife said she notices a pattern when we use the downstairs t-stat it trips? I think there is a short somewhere and they better find out what is going on before i smash something!:wall: