How Much Does a Duct Leakage Test Cost in Massachusetts?
A standalone duct leakage test in Massachusetts typically costs between $200 and $500. Most builders bundle duct leakage testing with a full HERS rating and blower door test package, which ranges from $600 to $2,500 depending on project size.
What Is Duct Leakage Testing?
Duct leakage testing measures how much conditioned air escapes through gaps and holes in your HVAC duct system. The Massachusetts Stretch Energy Code requires new construction to achieve duct leakage of 4 CFM25 per 100 square feet of conditioned floor area or less.
Why Duct Leakage Testing Matters
Excessive duct leakage can cost homeowners 20-30% more in heating and cooling costs annually. It also causes comfort problems — rooms that are too hot or too cold — and can create negative pressure that pulls pollutants and moisture into the living space.
Massachusetts Duct Leakage Requirements
Under the Massachusetts Stretch Energy Code, new residential construction must achieve Total Duct Leakage of 4.0 CFM25 per 100 sq ft of conditioned floor area or less. Duct Leakage to Outside must be 4.0 CFM25 per 100 sq ft or less. Both tests must be certified by a RESNET-certified HERS rater.
What Happens If You Fail?
Common fixes include sealing joints with mastic or metal tape, ensuring all duct connections are properly secured, and sealing penetrations where ducts pass through walls and floors. Retesting is typically an additional charge of $150-300.
Get a Duct Testing Quote
Home Energy Efficiency Consultants provides certified duct leakage testing across all of Massachusetts. Call (617) 501-6788 for a free quote. Same-day and next-day scheduling available.
