Exterior Duct-Work is Insulated

DefinitionDOE estimates that heating and cooling ducts located in unconditioned spaces such as attics and garages can underperform by 60–75 percent. Exterior ducts that are properly insulated can save energy and reduce overall equipment sizing. Insulation standards are clearly defined: <a name="m_-4439061441316115113__MailEndCompose"></a><a href="https://www.energy.gov/energysaver/insulation">https://www.energy.gov/energysaver/insulation</a>