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If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation

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HVAC Ducts Shall Not Be Run within Exterior Walls

Guide

Guide describing the use of building cavities as supply or return ducts.

New Whole-House Solutions Case Study: Nelson Construction: Hamilton Way, Farmington, CT

Case Study

Case study describing the design and testing of 10 high-performance homes in Farmington, Connecticut.