Comfenergy Case Studies: Duct Encapsulation in Mitchells, VA
Challenge
A customer in Mitchells, VA, wanted to upgrade or replace the old insulation in his home built in the 1980's. He had two attic levels and he knew that the ductwork ran through both and also needed to be insulated. The ductwork had gaps and holes that were leaking into the attic when the air handler was off, and worse, became more powerful when the air handler was on. Additionally, the ductwork was poorly insulated, allowing air to pass through it easily. In the heat of the summer, the attic temperature was around 130 degrees! When the cool conditioned air traveled through the ductwork and up to the attic, it was warmed by the sweltering attic air. The homeowner paid to have air cooled, only to have it warmed up on it's way to the rooms in his house. This makes the HVAC system work harder and faster. Uninsulated ducts in the attic result in energy loss, higher energy bills, and uncomfortable rooms throughout the house.
Solution
Our Certified Home Comfort & Energy Specialist, Carl Depner, assessed the attic and proposed duct sealing and insulation. The Comfenergy Production Crew, led by Marvin, sealed and insulated the ducts with 1-inch closed cell foam. This stopped conditioned air from leaking out. The Tight 'n True duct encapsulation system provides superior R-value, has energy-saving capabilities, and is guaranteed to lower utility costs. Now, when the homeowner turns his AC on, cool air is delivered to his rooms without loss along the way. With the ductwork sealed, TruSoft insulation in blown into the attic to an R value of 49. This buried the ductwork in cellulose insulation, heavily guarding them from the extreme temperatures that can occur in the attic. Encapsulating the ductwork in the attic provided a significant improvement on this home's comfort and energy efficiency. Plus, this family is now saving more money on their energy bills and the HVAC system doesn't have to work overtime.
Project Summary
Evaluator: Carl Depner
