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

Hassler is your local, full service, trained and certified home performance experts.

There are many advantages to choosing Hassler as your source for heating and cooling installation and service, including the fact that we are locally owned and operated.

Why Choose Us?

  • Locally owned and operated since 1999.
  • Authorized Factory Dealer.
  • Installation and service technicians are all factory-trained and certified.
  • We use only the most reliable, high-quality, energy-efficient equipment.
  • Knowledgeable representatives provide various purchasing options.
  • We take special care to protect your home during installation.
  • Your heating and cooling system is guaranteed in writing.
  • We offer factory-backed extended warranties.
  • Full sheet metal shop to ensure highest quality system and duct installation.
  • Refrigerant removal is provided according to federal guidelines.
  • We are a friendly, drug-free company.


We want you to be comfortable in your home!

We are your local home experts.

Talk to our team today!


Schedule Service

Get Started!
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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