HVAC service contracts are agreements made between a customer and HVAC service provider at the time of HVAC installation for repairs that cover regular tune-ups and maintenance. Some of the benefits of an HVAC service contract include: Customers don't have to remember to schedule seasonal maintenance Scheduled maintenance can extend the overall lifespan of an HVAC system Getting tune-ups seasonally can increase the energy efficiency of the equipment Homeowners may save money by preventing emergency repairs Some homeowners don't see the value in service agreements because they're essentially insurance policies—the cost of additional repairs and service isn't always higher than the annual fees.