The technician was extremely rude and condescending. I asked some basic questions about the job he was about to perform on the electrical work attached to our boiler (like why can't we install the switch to turn everything off, including the auto feeder?), and instead of responding with an explanation, or provide some assurance, he through a fit, told us to talk to a boiler guy, and walked away. He didn't even want to discuss any options, or understand my concerns. Completely unprofessional and unacceptable.