- 6175841809
- hersratingcompany@gmail.com
- 12 Pond St Ashland, MA 01721 United States
- 573 Washington St Quincy, MA 02169 United States
RESNET & BPI-Certified Air Leakage Testing for New Construction, Mass Save & MA Stretch Code
A blower door test measures building air tightness by depressurizing the structure to 50 Pascals and measuring air flow in ACH50. The MA Stretch Code requires new residential buildings to achieve 3.0 ACH50 or less. Air sealing improvements can reduce heating and cooling costs by 20–40%.
RESNET and BPI-certified blower door testing for new construction, Mass Save programs, and MA Stretch Code compliance. Results delivered within 24 hours statewide.
With hundreds of certified projects statewide, we offer unmatched expertise, fast turnaround, and full compliance support for builders, developers, and homeowners.
Required under MA Stretch Code (max 3.0 ACH50) and IECC 2021 base code (max 5.0 ACH50). We perform intermediate and final tests.
Required for Mass Save air sealing and insulation rebates. Accepted by all Mass Save program administrators.
Blower door testing is required in every HERS Rating. We perform both simultaneously to minimize cost and scheduling.
Using the blower door fan with smoke pencils and thermal imaging, we pinpoint exactly where air is escaping from your building envelope.
Intermediate tests during construction verify air sealing progress before insulation is installed — allowing corrections before it’s too late.
Air sealing improvements identified through blower door testing can reduce heating and cooling costs by 20–40%.
A clear four-step process designed to keep your project on schedule and on budget.
Contact us for a transparent quote. Package pricing available when combined with HERS Rating and duct leakage testing.
We schedule your test at a time convenient for your construction timeline, including intermediate tests during framing.
Our certified technician installs the blower door fan, depressurizes the building, and records CFM50 and ACH50 readings.
Certified blower door report delivered within 24 hours — ready for permits, Mass Save applications, and HERS Rating.
We offer all services required for new construction compliance in Massachusetts — schedule them together for maximum savings.
Blower door testing is included in our full compliance packages: Single-family homes $1,850–$2,500 · Multifamily (per unit) $650–$1,200 · ADUs $1,600–$1,850. Contact us for a free quote — package pricing available when combined with duct leakage testing and HERS Rating.
New residential construction under MA Stretch Code must achieve 3.0 ACH50 or less. IECC 2021 base code requires 5.0 ACH50 or less. Passive House targets are below 0.6 ACH50.
The on-site test takes 1–2 hours. We deliver your certified test report within 24 hours.
Yes. Required for all new residential construction under both MA Stretch Code (3.0 ACH50) and IECC 2021 base code (5.0 ACH50), and for Mass Save rebate applications.
We work with your contractor to identify air leaks. An intermediate test before insulation allows corrections before the final test — avoiding costly failures.
Yes. We provide certified blower door testing across all 351 cities and towns in Massachusetts.
Find your city below for a location-specific service page with local information.
Contact HERS Rating Company for a free, no-obligation quote. Fast, accurate, RESNET-certified results across all 351 Massachusetts cities.
At HERS Rating Company, we are committed to providing the highest quality energy consulting services to homebuilders, architects, and developers across Massachusetts.
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12 Pond St Ashland, MA 01721 United States
573 Washington St Quincy, MA 02169 United States
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