Login ID
Forgot your password?

•  Create and download as many specs as you wish.
•  No e-mail address or other identification is required.

•  Create an online account to store and share your projects
•  Create, edit, and download specs
•  Protect specs against a lost Internet connection
•  Store specs online
•  Your information and specs are kept private

What makes CtrlSpecBuilder
unlike any other BAS specifications

•  User can choose open and non-proprietary specification option
•  Specifications are created in English or metric units
•  Options for multiple BACnet protocols (including BACnet/SC), electrical demand limiting, optimization, Fault Detection & Diagnostics, and more
•  Based on ASHRAE Guideline 13 and CSI MasterFormat 2016
•  It's free

5 simple steps! Learn more
Read our Frequently Asked Questions

Useful links on specifications and HVAC controls.

Please submit suggestions or report problems.