Hassler Heating and Air Conditioning, LLC

Hassler Heating and Air Conditioning, LLC has operated in El Cerrito since 2008, holding California license #1042888. With a perfect 5-star average across 568 verified reviews, the company serves residential clients throughout the East Bay, including Oakland, Berkeley, Richmond, Albany, and surrounding Contra Costa County communities. The family-owned business focuses exclusively on homes seeking upgrades to modern heat pump technology and complete home electrification solutions rather than repairs on aging systems.

What distinguishes Hassler from typical HVAC contractors is their specialization in full home performance rather than equipment swaps alone. As an Energy Star partner, they handle every component affecting indoor comfort, from attic and floor insulation to building envelope sealing, plus tankless and heat pump water heaters for homes transitioning off gas. Technicians install ductless mini-splits and zoning systems designed for California climate zones. The company partners with utility rebate programs and offers 0% deferred financing, making heat pump conversions financially attainable for Bay Area homeowners upgrading from legacy systems.

Reviewers recount specific scenarios demonstrating their capability with complex jobs. Donald Flory describes how Hassler managed asbestos remediation alongside replacement of a hundred-year-old furnace, a scenario that halted two previous contractors. Jeff Kilmer details his central vented heat pump installation by Alberto, Eddy, and Mikey, with project management by Andrew and Mark. Dan Pine emphasizes same-day response after his furnace failed and securing 0% deferred payment. One recurring reviewer names his technician for annual maintenance over multiple years, praising explanations at each step. These accounts reflect Hassler's approach to complicated retrofits rather than simple part replacements.