Serving Berkeley, Oakland, and Alameda, Contra Costa, and Marin Counties!
Hassler Tech In Truck

At Hassler, we see take customer satisfaction seriously. That is why we offer repairs and service agreements for residential and commercial heating and cooling systems. It is a real pain when a heating or cooling system breaks down and our preventative maintenance plans will make sure that your systems are in top shape. And if you system ever does go down, you can count on Hassler to be there to fix it.

Diagnostics & Repairs

hvac diagnostics

Diagnose & repair any issues with your furnace, air conditioner, heat pump or ductless mini split with the heating & cooling experts at Hassler heating and air. California's East Bay area relies on air conditioning & heating, and Hassler provides HVAC maintenance for increased home comfort & energy efficiency.

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Hassler tech in truck

Get true peace of mind when it comes to keeping your heating and cooling equipment running at peak efficiency with a maintenance agreement from Hassler Heating and Air. Our maintenance agreements include seasonal inspections and cleaning for your air conditioner and furnace for greater year round efficiency.

Filter Replacement

filter replacement east bay

Looking for the single most important thing you can do to prolong the life and maintain the efficiency of your heating and cooling equipment? Replace your air filters! Hassler Heating and air is the trusted HVAC and home performance contractor throughout Alameda, Contra Costa, and Marin Counties, CA.

Commercial HVAC Services

commerical hvac el cerrito

Keep your employees comfortable, & your monthly heating and cooling expenses at a minimum with Hassler heating & air. Hassler offers top rated commercial HVAC services in Berkeley, El Cerrito & surrounding areas. Call for commercial air conditioning & heating services, including installation & maintenance.

VIP Club Membership

Hassler truck

Installing new heating and cooling equipment like a furnace, heat pump, or central air conditioner is a big investment that will impact your home’s comfort and energy efficiency for years to come. To keep your equipment running as efficiently as possible for as long as possible, you need routine HVAC maintenance.

We have your HVAC maintenance covered.

Call Hassler 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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