Complete guide to duct leakage testing in Massachusetts. MA Stretch Code 2021 requires 4 CFM25 per 100 sq ft. Learn cost, process, and what to do if you fail.
HERS Rating vs Energy Star certification — what is the difference and which does Massachusetts require? Learn how these two programs relate under the MA Stretch Code.
Not all HERS Raters are the same. Learn what to look for when hiring a certified HERS Rater in Massachusetts for new construction energy code compliance.
Does your Massachusetts ADU need a HERS Rating? Yes — learn what the MA Stretch Code 2021 requires for accessory dwelling units and how much it costs.
What energy code applies to new construction in Massachusetts in 2026? The MA Stretch Code 2021 is the standard. Here is what builders and developers need to know.
What happens if your Massachusetts home fails a blower door test? Learn the passing threshold, common failure causes, and how to fix air leakage before your retest.
Complete guide to blower door testing in Massachusetts. Learn what the test measures, what a passing result looks like under the MA Stretch Code, and how to prepare.
HERS Ratings for multifamily buildings in Massachusetts — requirements, costs, and how to get certified under the MA Stretch Code 2021.
How much does a HERS Rating cost in Massachusetts in 2026? Get current pricing for single-family ($1,850-$2,500), multifamily ($650/unit), and ADU ($1,600-$1,850) HERS Ratings.
Learn how HERS Ratings qualify Massachusetts new construction for Mass Save rebates up to $4,000+. Step-by-step guide to claiming rebates through your HERS rater.
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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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