Rheia is the easiest, most cost-effective way to bring ducts into the home’s conditioned space. Our small diameter system is designed to fit in 2×4 walls and, in all types of floor systems, using 3″ and 4″ uninsulated ducts. Compatible with any conventional air handler, Rheia’s patented snap-fit connections eliminate the need for tape or mastic — leading to a fast, labor-efficient installation.

With ductwork and equipment now entirely in the home’s conditioned space instead of the attic, homeowners will see energy cost savings and experience more consistent temperatures around the house, making it feel more comfortable. And, because the Rheia system is engineered to meet updated and future code requirements, Rheia can lower HERS scores, making the difference needed to achieve the 45L $2,500 and $5,00 per home tax rebates, meeting the required Energy Star requirements.