Hassler Heating and Air Conditioning, Inc. (HHAC) provides exceptional residential heating and cooling services with a focus on improving your homes energy efficiency. We serve the counties of Alameda, Contra Costa and Marin with particular focus on those homes with special heating and cooling requirements. In retrofitting old systems as well as remodeling projects, HHAC will create a custom system that is visually and aesthetically matched to your home, giving it state-of-the-art technology (such as high efficiency and zoned systems) and a welcome look and feel. HHAC is aware that many homes’ original architectural structure will not accommodate the easy-install, pre-fab systems that many HVAC companies use. Whatever your home comfort needs are, HHAC uses equipment and materials above industry standards including energy efficient options in our installations of heating and cooling systems. Additionally, we install and repair, programmable thermostats, filtration systems, heat pumps, ductless split systems, ducting, water heaters, humidifiers, and more. Hassler Heating and Air Conditioning is also a participating contractor in the Energy Upgrade California Home Upgrade Program. Energy Upgrade California Home Upgrade program helps you make home improvements that can save energy and make your home more comfortable. These Whole Home rebates (ranging from $1,000 – $6,500) reward you for addressing your home energy efficiency needs as a system instead of piece by piece.