Energy Upgrade California

Home Upgrade
Your project can qualify for up to $6,500 rebates through Energy Upgrade California Advanced Home Upgrade program.
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Comfort Starts


Schedule your appointment by calling us today! We offer free estimates on all installation projects.

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Affordable financing that you can repay on your property taxes.

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PG&E Home Upgrade Program

Momentum Award

Hassler just won the Momentum Award for the largest growth at PG&E’s annual Contractor Exchange. We achieved over 1000% rebate job growth in 2014!

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You can depend on Hassler Heating and Air Conditioning for emergency service and replacements.

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$25 off

Any Repair

*applies to any repair service over $200. Offer cannot be combined with any other offer or discounts. Expires 3-31-15

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Alameda | Contra Costa | Marin


Serving Alameda, Contra Costa, and Marin Counties

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Air Conditioning


If it is air conditioning service that you need, we are available to assist you. We will be there to keep you cool in the summer.

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Heating - Furnaces and Heat Pumps


Call us to achieve total energy efficiency, comfort, and health. Hassler keeps your heating systems running smoothly.

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Home Performance

Home Performance

Our Home Performance services include energy audits, home energy ratings, and whole house energy evaluations. Learn more

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BAYREN Home Upgrade – Notice of Incentive Approval
Sep 19, 2014 by David G. Berkeley, CA

Apparently, Rene and your team did such a good job the rebates is even a bit higher than expected.
Thanks for the good work. Your commitment to qualifying and getting the rebate was a key factor of why my wife and I chose your company for the installation over other companies we received quotes from.
take care,
David G.

These guys are verifiably awesome!
Mar 31, 2013 by Nick K. Walnut Creek, CA

....These guys are verifiably awesome! We just purchased a house and needed all of the duct worked replaced, re-installed, and some new registers added. Every we dealt with was very professional, and they gave us a very competitive bid.

Best of all, the independent test person who came out to test the air leakage from our ducts (to comply with state law) said this: \"I work with 17 or 18 different HVAC people in my job, and these people did such a good job, I would rank them in the top 5% of all jobs I have ever seen.\" Needless to say, the inspector kept saying that we -really- got our money\'s worth from Hassler....highly recommend!!

Love em
Mar 31, 2013 by John

....They took out our wall furnaces and installed an energy efficient 2 zone heating system. Mike explained his whole process step by step and provided me with many options. I was very pleased with the work they did and would recommend them to anyone.

Hassler Heating and Air Conditioning, Inc. 510-848-3030 1537 South 56th Street El Cerrito CA, 94530 USA 0.0 0.0 0 0 Reviews for my site

Contact Hassler @ 510-848-3030

For a consultation, please contact us to schedule an appointment. We are also happy to answer any of your questions about our expertise and services.

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Hassler Heating and Air Conditioning, Inc.
1537 South 56th Street El CerritoCA94530 USA 
 • 510-848-3030