Serving Alameda, Contra Costa, Marin Counties and Beyond!

A NATE Quality Circle Contractor has at least 80% of their total technicians NATE certified. This high level of certification means they are ensuring their technicians are capable of providing the highest-quality service to their customers.

Save $25 off your next heating or cooling repair. Any make, any model, Hassler is prepared to repair your heating and cooling equipment.
A comprehensive energy assessment from Hassler Heating will improve your home's efficiency and reduce your energy bill.
New Year's Resolutions for your home
If you’re looking to get healthier, spend more time with family and save money in the new year, you should set resolutions for your home. Although you probably have some personal goals, by taking... Read more
BBB Accredited
diamond certified Hassler Heating
Carrier Factory Authorized Dealer
Nate Hassler Heating
angie's list super service award 2016
Presidents Award