The furnace needed maintenance service. Greg has worked on this unit before. Then, the furnace would not ignite. He came over again and not only lit the pilot light, but showed me how to do it in order to save on a future service call. His knowledge on this old style of broiler (?) furnace was very helpful. In fact, when he came over a second time to light the pilot, he didn't even charge us for the service call and showed me how to do it myself so I wouldn't have to call him. He also said if I needed help to call him and he would try to talk me through it over the phone.