An Energy Efficient Home Is A Happy Home: Performed a few Blower Door Envelope and Duct Tightness Verification test this week. These are a few remodeled homes that passed the 2009 /2012 IECC Code Compliance significantly. These homes will be Energy Star efficient with great energy bills. If you feel that something just isn't right with your home, it could be your home’s current air barrier is under performing. Unsealed envelope penetrations (plumbing,electrical,roof vents etc.) and the fenestration of your home could be a big factor. Poorly sealed hvac ducts causing duct leakage is another cause of poor comfort and high energy bills. Call us today for an assessment/remediation plan.