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Energy Upgrade California
Hassler offers services in retrofitting older homes with new and more energy efficient heating...
With excessively hot temperatures during the summer months, having an air conditioning system...
Poor indoor air quality (IAQ) impacts your health and can make you sick or uncomfortable...
A home energy assessment is a diagnostic test that evaluates the efficiency of your El Cerrito,...
Have you experienced a breakdown with your home heating or AC system and need professional...
Like regular oil changes and service checks for your car, your heating and cooling system...
Hassler provides installation, repair, and maintenance services for programmable thermostats,...
Except for heating and air conditioning, our homes use more energy for water heating than any...
Why Choose Hassler
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.
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.
The latest from the Hassler Blog
Although you may think the air in your home is safe, there are many harmful pollutants, allergens, and contaminants that may be contributing to health issues for you and your family. Indoor air is... Read more
Many homeowners in the Berkeley, El Cerrito and Oakland areas have spent years dealing with what are often referred to as “problem rooms.” These rooms are seemingly impossible to heat during