The Fifth Fuel is not a “Johnny come lately” to energy efficiency in the Northern Virginia and Metro DC areas. We have specialized in energy efficiency for homes and businesses since 1986 through our parent company, and we have the training and certifications to prove it!


The Fifth Fuel is as a Home Energy Rater for ENERGY STAR for new construction projects.


The Fifth Fuel is a member of the Residential Energy Services Network and has certified HERS (Home Energy Rating System) raters on staff.

Air Barrier Association of America

We are members of the Air Barrier Association of America, a leading organization for the energy efficiency and health of air barriers.

State of Virginia Licensed Contractor

The Board for Contractors licenses businesses engaged in the construction, removal, repair, or improvement of facilities.The Fifth Fuel is licensed by the state as a residential building energy analyst firm.

Your local experts in energy efficiency services.

Contact us to learn more about how we can help you!


Schedule Service

Learn More