Insured, factory-trained technicians from Custom Air, Inc. pay close attention to details when they inspect and service furnaces, performing a 21-point inspection with each tune-up. They check heat exchangers, electric connections, and the safety of the furnace. To prepare furnaces for the winter, they change filters, keep a lookout for dangerous gas leaks, and give riveting pep talks. In addition to tune-ups, the technicians are factory certified to install and repair systems, offering express appointments at any time of the day or night. They back all their services with a 100% guarantee.