I did not have any heat in my house. I left a message with Modern Comfort to contact me the following morning when the office opened in order to arrange an appointment. I received a call approximately 10 minutes of the office opening and an appointment was arranged for that morning. The service technician arrived timely and was very cordial, polite and professional. He was knowledgeable and diagnosed the problem within minutes. He determined the issue was a faulty thermostat. He installed a new thermostat in a timely manner and the heat was back working perfectly. The technician should be commended on a job well done.