For HVAC repair and service in O’Fallon, turn to Heritage Heating & Cooling. As a locally owned family business, they take pride in serving the community with superior customer care. As a veteran-operated company, they appreciate all those who have served and offer military discounts. Whether their skilled technicians are repairing your air conditioning, installing a new furnace, or any other air quality solutions, you will see why they’ve been named an Angie’s List Super Service award winner. Customer satisfaction is Heritage Heating & Cooling’s ultimate goal! Plus, all equipment, parts, and labor come backed by a written warranty, so you can rest easy knowing your indoor air quality is guaranteed.