Beginning in 2007, all ENERGY STAR® labeled homes must meet the Thermal Bypass Inpection Checklist (PDF) criteria.
A thermal bypass is a design or building flaw which allows heat to enter or leave the building and increases the cost of heating and cooling your home. A bypass compromises the thermal properties of your insulating and sheathing materials. In many cases, a bypass can interfere with the insulation of a wall or building system, causing higher energy use, moisture-related material destruction, and decreased comfort for those living in your home.
Upcoming training for new ENERGY STAR® criteria:
Below are additional resources to help you address concerns about thermal bypasses.
 | New Guidelines for ENERGY STAR Qualified Homes and supporting materials from the Environmental Protection Agency. |
| Download an ENERGY STAR Guide on the Thermal Bypass Checklist. (PDF) |
| Visit the U.S. Department of Energy's Building America web site |
| Browse various Builder's Guide books at the Energy & Environmental Building Association's bookstore |
