Serving Berkeley, Oakland, and Alameda, Contra Costa, and Marin Counties!

Our Services

  • Hassler specializes in cost-effective, energy efficient heating services, including furnace...

  • Want to achieve maximize indoor comfort, energy efficiency, and energy bill savings with your...

  • Preventive maintenance and fast repairs are essential if you want to get the most from your...

  • Just like your car, your heating and AC systems need regular maintenance and repairs to operate...

  • Keep cool all summer, and stay cozy all winter with the best heating and cooling equipment,...

  • Get reliable heating and cooling with heat pump installation from the expert team at Hassler....

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