Case Study: Oak Park, Illinois Homeowner achieves passive house performance with Aeroseal

Oak Park, Illinois Homeowner achieves passive house with Aeroseal, cutting duct leakage 97%

An Oak Park, Illinois homeowner faced the challenge of transforming their historic 1902 home into a modern, energy-efficient, net-zero residence without compromising its architectural integrity. To meet passive house standards, they needed to drastically reduce air leakage in both the building envelope and the duct system, a task for which they enlisted Aeroseal's duct and envelope-sealing technologies.

Aeroseal implemented its AeroBarrier envelope sealing and Aeroseal duct sealing to address the home's inefficiencies. The building envelope leakage was reduced from 833.7 CFM to 422.5 CFM, while duct leakage was cut by 97%, from 343.4 CFM to 9.7 CFM. This comprehensive airflow optimization allowed the historic home to achieve passive house standards, resulting in a net-zero energy residence that blends modern performance with its original charm.