In this post, we share a free HVAC service agreement template that you can use to set up recurring service agreements with your customers. An HVAC service contract allows a client to hire an individual or company for the continued maintenance and repairs on their HVAC system.Legal notices and invoices pertaining to this Agreement shall be sent to the appropriate contact person. Easy-Fill: Fill out the form online, then print and mail it to CSLB. PDF: Print a blank form, then fill it out and mail it to CSLB. HVAC service agreements can seem difficult to create, sell, and manage which is why we've created a free Service Agreement Template to help get you started. Simply fill in the blanks with specific details. CSA Form, PDF (61K) : Continuing Service Agreement for landlords, apartment managers, HOA's. Contact Us. Public Works 200 E. Santa Clara St. Tower 5th Floor San Jose, CA 95113. Phone: (408) 535-8300.