The effective life of any HVAC installation. That's why our Service Department provides a range of Preventive Maintenance, Service Agreements and repair services for HVAC systems, whether or not Apollo performed the original installation. We utilize state-of-the-art computerized maintenance and service call scheduling software to develop a precisely-tailored program that fits the requirements of each individual installation. This allows us to maintain the level of service and response our customers have come to expect. It is this continuous commitment to provide the best possible level of service and maintenance which clearly sets Apollo apart from all other HVAC service companies.