We are working to qualify Emerald Hill for, potentially, four stars in the the Austin Green Build program. It requires a make-up air system — when the exhaust hood over the cooktop is pulling fumes out of the house from the cooktop, the make-up system replenishes by pulling outside air into the house.

Above, the duct and motor and control unit for the make-up air system installed in the attic over the garage, connected to a duct run that penetrates the drywall to reach the kitchen.