My furnace was acting erratically. Some times it worked and many times it did not. i contacted Enercare on a Saturday afternoon to explain the issue. They scheduled a service call for Sunday morning. The technician arrived as scheduled. He was very friendly and courteous and respectful of the house. He diagnosed the problem and ordered a replacement part to be couriered to my house. The part arrived Monday afternoon and I was able to schedule the installation for Tuesday morning. All went to plan and the furnace is functioning properly again.