Cornelius performed an annual check of our boiler ...

Cornelius performed an annual check of our boiler and our furnace. I've tried several other companies for this type of work, and so far Shavitz is my favorite. I like to watch work being done, so I can learn, and Cornelius let me watch and patiently explained everything to me. The checks were more thorough than I had witnessed in the past. I had one problem with the boiler relief valve that I explained, and we walked through the process to determine that the expansion tank was completely full of water. Letting me watch and answering all of my questions with clear explanations gave me confidence in Cornelius' competency and in Shavitz in general.