Contact Information

We love customer feedback! If you have questions, concerns, or feedback, please give us a call or submit your message using the form below.

Looking for HVAC service? You can easily schedule a Service Call using our handy online service request form or by calling us.

Mailing Address:Cal State HVAC
735 Hillsborough Blvd,
Hillsborough, CA 94010
Phone:(650) 342-5556
License # (CSLB):965710
Hours of Operation:Mon - Sat: 6:00am - 9:00pm
Sun: 8:00am - 8:00pm
Sunday: closed

We do not provide walk-in service. The address above is for mailing / billing purposes only!

You can contact us via e-mail using the below contact form:

    Contact Form

    First name*

    Phone number

    - -

    Inquiry Type*

    Last name*