Since 1996, McMaster Heating & Air Conditioning has provided Orange County with expert residential and commercial HVAC services. For over 28 years, we have been the preferred HVAC contractor for thousands of satisfied clients throughout Irvine, Newport Beach, Mission Viejo, and surrounding areas. As an award-winning Carrier Factory Authorized Dealer, we offer factory-direct access to their product lines of energy-efficient, highly rated air conditioners, furnaces, heat pumps, mini-split systems, commercial rooftop units, VRF systems, indoor air quality products, thermostats, and more. Our highly-trained NATE-certified technicians have decades of hands-on experience and always use the industry's best practices, quality parts, and the latest HVAC tools and technology on every job. We offer fast response times on expert repair services for all major HVAC makes and models, as well as comprehensive maintenance agreements and AC/heater fall and spring tune-ups. Call today! We offer industry-leading warranties, free on-site estimates for new installations, and affordable financing for those who qualify.