COVID-19 Update:

To protect the health of our staff and our customers, Efficiency Vermont offices are closed to the public. In the meantime, our customer support team is available to help you remotely. Contact us at (888) 921-5990 or

We have cautiously begun scheduling project related site visits when required. You can find more information on our safety protocols here.

BBD 2021 Sponsors & Exhibitors

Gold Level Sponsors

Windows & Doors By Brownell
RST Thermal, Inc
Vermont Gas Systems

Silver Level Sponsors

Build Equinox
Green Mountain Solar

Bronze Level Sponsors

475 High Performance Building Supply
Burlington Electric Department
DuBois & King
Emerson Swan, Inc.
Green Mountain Power
Heatcraft Refrigeration
Kingspan Insulation
Loewen Window Center of VT and NH
Mitsubishi Electric Trane HVAC US LLC
Pella Windows & Doors of South Burlington
Preferred Building Systems
RAB Lighting Inc.
Trane Technologies
Vermont Business Magazine

Nonprofit Sponsors

Conference Host