Yes, plumbers fix furnaces. In Alberta, plumbers receive two tickets. The first is a Plumbing ticket, and the second is a Type B Gasfitter ticket, which allows a qualified Plumber to work on any gas-fired appliance under 399,000 BTU/hr, which includes all household furnaces. If your furnace quits in the middle of winter or you want to be prepared with a pre-season service, 180 Plumbing & Heating can handle all your furnace maintenance needs.