Welcome to Residential Climate Control, your reliable and efficient HVAC service company serving Fullerton, CA and surrounding areas. We are the new dawn of smart homes. Whether you have an issue with your air conditioning and/or heating systems, or want to upgrade efficiency and auto in mind, our intelligent thermostats and our wide selection of indoor air quality equipment that can ventilate, humidify, filter, and provide ultraviolet light air treatment for a healthy environment. With our years of experience, we always maintain high-quality standards and consistently place customer satisfaction above all. Our technicians practice the highest level of scientific development and diagnose air conditioning problems by using mathematical formulas. For a small service fee, we do a complete safety check and diagnosis, in addition to providing resources on how to fix.