Homeowner looking for a Contractor? Check out the Clean Energy Connection


Events Calendar

Find in-person and online free and low-cost building performance and energy efficiency training and events.

EFCA News Archive

Previous issues of our popular fact-filled EFCA News are available here.

Industry-Specific Information

It is imperative that contractors stay on top of clean energy and energy efficiency new technologies and techniques.

Industry Acronyms

GHC, VRF, ZNE? Unsure what industry abbreviations stand for? Find a wide range of essential acronym definitions.

Air Leakage Calculator

Specific Leakage Area is a building’s leakiness metric. All you need is a blower door, our calculator and some basic house info.

External Vetted Resources

A curated selection of resources from others that we’ve reviewed and recommend for their accuracy.