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

Have you experienced a breakdown with your home heating or AC system and need professional service? Hassler can help! Our NATE-certified technicians are the best in the industry. They will diagnose your problem quickly, give you options for the recommended repair and get you comfortable as quickly as possible.

Whether you are in need of a heating and air conditioning system, repair services or preventative maintenance, our skilled technicians can handle the job.

hvac repairs

Just like your car, your heating and AC systems need regular maintenance and repairs to operate at their best. Hassler Heating and Air Conditioning offers repair, service, and preventative maintenance for heating and cooling systems in El Cerrito, Oakland, and the surrounding East Bay area.

Hassler Tech In Truck

Diagnose and repair your heating and cooling equipment, replace your air filters, and sign up for a service agreement from the residential and commercial heating and cooling experts at Hassler. Hassler is the premier home performance contractor throughout El Cerrito, Berkeley, Mill Valley, and Oakland, CA.

Looking for emergency furnace or AC service?

Don't sweat it — call Hassler.


Schedule Service

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!


Keep CO Out of Your Home

Carbon Monoxide Monitor
Monday, December 28, 2015

With wet winter weather rolling into the Bay Area, homeowners are going to be spending a lot more time indoors.

Diamond Certified logo
NATE logo
Neighborhood Favorite 2023 logo
Bayren Logo
Carrier logo