Hassler Heating & Air Conditioning, LLC

Hassler Heating & Air Conditioning, LLC is leading the way in California's electrification efforts, providing comprehensive HVAC services that include maintenance, repairs, water heaters, ductless systems, full system replacements and heat pump conversions. Every project begins with an in-home evaluation—an essential step for gas-to-electric transitions—to ensure equipment is properly matched for comfort and efficiency. To support long-term performance, Hassler may also recommend air sealing, insulation upgrades, high-efficiency windows or zoning technology. As a trusted contractor with extensive experience navigating regional incentive programs, Hassler helps customers access available rebates and manages the process from start to finish. In addition, the company offers professional electrical services such as panel upgrades, circuit additions and dedicated wiring to support home electrification.



General Manager Marcus Mueller says Hassler’s strength comes from its ability to operate as both a full-service HVAC contractor and a home performance company. “It’s rare to find a contractor that can handle both. Our clients rely on us—and refer us to others—because they know we’re committed to improving energy efficiency, home comfort and indoor health.” To ensure the best results, most projects include a pre-work site visit with a project manager to create a customized solution built for long-term performance. This commitment to thoughtful design and high-quality workmanship sets Hassler apart and continues to earn the trust of homeowners throughout the region.