1Single Choice
An installer is running a new warm air supply duct through an unconditioned attic in climate zone 2. According to the IMC/IRC, what is the minimum required insulation R-value for this supply duct?
Reveal the answer to continue
We use cookies to understand how the site is used and to improve it. Analytics only runs if you accept. See our privacy policy.
An installer is running a new warm air supply duct through an unconditioned attic in climate zone 2. According to the IMC/IRC, what is the minimum required insulation R-value for this supply duct?
Reveal the answer to continue