As a family-owned and operated company, Denny's Gas Oil & Air Service Denny's Gas, Oil, and Air Service focuses on providing high-quality services to our clients. We understand that property owners need the convenience of accessing all these services under a single roof. We offer a range of solutions, including installing, repairing, and maintaining swimming pool heaters, oil furnaces, and air conditioning systems. As you can see on this page, we also provide tankless water heaters, ductless AC systems, and all types of HVAC repairs. We work systematically and have the experience and knowledge to manage even the most complex installations and repairs to industry standards. We use the best materials in our work; our team is committed to providing our clients value for money. We are a certified company that has been in business for over 35 years. Please browse these pages to get a better idea of our services.