Serving Berkeley, Oakland, and Alameda, Contra Costa, and Marin Counties!
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When choosing the brands as well as the heating, cooling, and indoor air quality products that we install in the homes of our East Bay friends and neighbors, we make sure they are products we can stand behind, 100%. It isn’t just about choosing products that will perform right now —they also need to last throughout many hot and dry California summers and winters! 

Take a look at the list of brands we trust as the home furnace and air conditioning experts throughout Marin, Contra Costa, Santa Rosa, and Alameda counties. 

Other Brands

Because we need to carry a broad range of products, and our team constantly has our eyes on the latest technology that can improve the comfort, indoor air quality, and efficiency of your home, we supplement our catalog of products with the following brands and manufacturers:

  • Ruud traditional "tanked" water heaters
  • EcoBee smart thermostats
  • IQ Air Air purifiers
  • AprilAire humidifiers, air purifiers, and ventilation products

Looking for a central air conditioner that is tailored to your home's needs? We'll find the solution you need. Call Hassler at 510-848-3030 or get in touch here.


Call 510-848-3030

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Keep Everything Running Smoothly to Save You $$$ Down the Road
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!
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