Massachusetts and Rhode Island require blower door testing for all new homes—and the results play a major role in achieving code compliance under MA 780 CMR and RI IECC 2024.
Energy Geeks provides certified Blower Door Testing for builders, architects, and homeowners who need accurate documentation and reliable results.
Required Air Leakage Thresholds
Massachusetts — 780 CMR
- Base Code: ≤ 3 ACH50
- Stretch Code: ≤ 3 ACH50 (Stricter for high-performance homes)
Rhode Island — IECC 2024
- Statewide Requirement: ≤ 3 ACH50 for new construction
Learn how air leakage impacts your HERS Score: Why Airtightness Matters
Documentation Required by Building Officials
Energy Geeks provides:
- Certified blower door report
- ACH50 and CFM50 documentation
- Verified building envelope characteristics
- RESNET-compliant modeling data (when part of a HERS Rating)
See the complete rating workflow: The HERS Rating Process
When Code Compliance Testing Is Required
Code compliance testing is typically required for new construction and for major additions or gut renovations where energy performance must be verified. Testing is also part of the process for Energy Star and Zero Energy Ready Homes, as well as for projects located in Stretch Code municipalities. In addition, homes pursuing performance path compliance must complete testing to demonstrate that modeled energy targets are met.
Learn more about compliance here: Code Compliance in MA & RI
Preparing a Home for Testing
Proper preparation helps ensure accurate and consistent test results. Typical steps include closing all exterior windows and doors, opening interior doors to allow air to move freely, and sealing intentional openings such as dryer vents or bath fan dampers. Clear access to mechanical rooms and equipment is also important so testing can be completed efficiently and without delays.
Full guidance found here: Test Preparation & What to Expect
Related Testing Services
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We help you meet MA & RI energy code requirements.