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

Hassler was started with one idea in mind: Customer Satisfaction. Over the years we have built our foundation on this idea, providing quality service that ensures the fulfillment of all of our customers.

This still remains our number one priority at Hassler. In everything we do, from spotless installations to timely service, we go that extra step to make sure you're happy. You can expect the highest level of service from Hassler. In fact, don't take our word for it, read what our customer are saying on Yelp.

Contact Hassler Today!


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Get Started!
Convert both your gas furnace and gas water heater to a heat pump and heat pump water heater at the same time and get $2,500 for your old equipment.
Keep Your Home Healthy!
Home energy audit credited upon installation with Hassler
with Heat Pump or Heat Pump Water Heater Conversion
Apply for financing today!

See What Our Customers Are Saying