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
- New construction
- Major additions or gut renovations
- Energy Star / ZERH homes
- Stretch Code municipalities
- Performance path compliance
Learn more about compliance here:
Code Compliance in MA & RI
Preparing a Home for Testing
Typical preparation includes:
- Closing exterior windows and doors
- Opening interior doors
- Sealing intentional openings (dryer vent, bath fan dampers)
- Ensuring access to mechanical rooms
Full guidance found here:
Test Preparation & What to Expect
Related Testing Services
Schedule a Code-Required Blower Door Test
Schedule Blower Door Test
We help you meet MA & RI energy code requirements.
