This was my first time using MZ Electric. I had a furnace installed and they were part of the installation for the furnace. I did not have to hire them for the furnace installation, it was included in the furnace. My son is buying the home that had to have the furnace installed and there were a few repairs that needed to be attended. They did such good job with the wiring of the furnace that I later used them for an outside outlet wiring issue. Very Knowledgeable!