I just bought a new house and was warned by the realtor that the furnace was old and possibly not large enough for the house. Sure enough, it started acting up over the first winter and I was worried I would need to replace the whole thing. Kelly’s Heating called me back immediately and came out right away. They found out it was just two parts that needed to be replaced. It has worked perfectly ever since. I wonder how long the previous owners suffered with half a furnace because they were using the wrong people.