What We Do

We at Hillside Heating & Air Conditioning Inc. have been providing Orange County and Inland Empire customers with Top Quality Service for 30 years.  We service, repair and install all makes and models of heating, ventilation and air conditioning equipment and take special pride in our commercial and residential retrofit installations.  We feel our top quality quotations, proposals and custom-built maintenance contracts set us apart from the competition.  If you don't find what your looking for contact us and we will customize a solution for your needs.