Murphy’s Law says: “The heat is going to quit on the coldest day of winter, and the air conditioning is going to quit on the hottest day of summer.” One of the greatest benefits of having a service agreement is that you are considered a paying customer. In the event that your heating or cooling quits when you need it most, the paying customer will usually get serviced before the occasional caller is even considered. Another benefit is that there is usually a service or maintenance plan that is included with the agreement. These plans regularly include things like annual maintenance cleaning, charging of the air conditioning system, cleaning of the blower, and filter replacement.