Founded in 1999, Hassler Heating and Air Conditioning, Inc. is a trustworthy and reliable company operating in El Cerrito, CA, Santa Rosa, CA, and surrounding areas. They provide exceptional service in installing, maintaining, and repairing all makes and models of heating and cooling systems. Built on honesty and integrity, Hassler Heating and Air Conditioning, Inc. is committed to delivering outstanding results and building long-term relationships with their clients. They also specialize in making homes more energy-efficient and healthy through services such as insulation, air sealing, and solar installations.