CertifyCertified Energy Diagnostics · Boston Metro
How Healthy
Is Your Home?
Thermal imaging, blower-door ACH50 testing, and energy-model scorecards that tell you exactly what a home costs to heat — before you sign.
Home energy assessment
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2 minutes · Get your A–F energy grade instantly
Home basics
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Skip to Book a Blower-Door Test →Diagnostic methodology
Every system.
Measured, not guessed.
Select a building system below to see exactly what we test, how we test it, and what a typical finding looks like in the field.
Attic & Roof Assembly
The single largest source of heat loss in most pre-1980 homes.
What we test
- Measure insulation R-value with calibrated depth probes
- Identify bypasses using FLIR thermal camera
- Document air-sealing deficiencies at top plates
- Check ventilation baffles and ridge continuity
Why it matters
Attic bypasses — not just thin insulation — account for 25–40% of heating load in older bungalows. Sealing costs $400–800 but returns $300+/year.
Real finding — anonymized
"Open top-plate chases running from basement to attic, bypassing R-38 insulation entirely."
Annual savings potential
$280–$640/yr
Thermal imaging included
Every zone documented with FLIR E96
Real findings
What the camera
actually reveals.
These are anonymized findings from recent inspections in Greater Boston. Each one was invisible to the naked eye.
Field findings — anonymized
Field finding
Entire perimeter rim joist uninsulated. Blower door revealed 18.4 ACH50 — nearly 3× the threshold for weatherization eligibility.
Remediation
$1,200 air-seal & insulate
Annual savings
$940/yr
Payback
15 months
94%
of inspected homes had at least one critical finding
$8,400
average buyer savings from pre-purchase inspection
6.2×
average ROI on energy upgrades within 7 years
48 hrs
report delivery after on-site inspection
Credentials & experience
Certified to the
standard that matters.
Marcus Reinholt
Principal Inspector, Certify
Boston metro · 14 years field experience
"I spent six years doing energy audits for the Mass Save program before starting Certify. I've walked through 840 homes and every single one had at least one finding the owner didn't know about. The goal isn't to scare you — it's to quantify exactly what you're dealing with before you're legally committed."
Certifications & credentials
BPI Building Analyst
BA-#2847Building Performance Institute
RESNET HERS Rater
HR-#9134Residential Energy Services Network
FLIR Thermographer
IR-#5521Level II Infrared Certified
EPA 608 Certified
EPA-#3309HVAC & Refrigerants
840+
Homes inspected
$4.2M
Client savings documented
97%
Report accuracy (audited)
2.1 ACH50
Average client improvement
Client outcomes
The report paid for itself
before closing.
Marcus found a failed flue liner on the oil furnace. The seller covered full replacement — $6,400 — as a condition of sale. The inspection cost $485.
Priya Mehta
First-time buyer · 1938 bungalow · Jamaica Plain
$5,915 net gain
The HERS scorecard added credibility to our listing price. We marketed the R-49 attic and new heat pump and sold $28k over asking in four days.
Tom & Claire Hendricks
Sellers · 1962 ranch · Winchester
$28k above list
I was convinced I needed all new windows. The blower-door test showed the windows were fine — the problem was the rim joist. Saved $14,000 in unnecessary work.
James Okonkwo
Homeowner · 1954 colonial · Belmont
$14,000 avoided
Schedule an inspection
Ready to see
what's actually there.
All inspections include a written report with thermal images delivered within 48 hours. Available Mon–Sat, Greater Boston metro.
Blower-Door + Thermal Package
Most comprehensive- ACH50 infiltration measurement
- Full-envelope thermal scan (FLIR E96)
- Written report with thermal images
- Prioritized remediation roadmap
- Utility rebate documentation
Pre-Listing Green Report
For sellers- HERS Index score calculation
- Energy model scorecard
- Comparable home benchmarking
- Agent-ready PDF report
- MLS green certification support
Retrofit Feasibility Study
Deep dive- Full blower-door + thermal
- Three upgrade scenario modeling
- ROI and payback calculations
- Contractor scope-of-work template
- Mass Save rebate maximization plan
Not sure which service fits?
Complete the quiz above and the report will recommend the right package for your situation.
Start with two minutes
Your home has a story.
Let's read it together.
Complete the assessment above for your instant grade, or schedule a blower-door inspection for the full picture. Either way, you'll know more than your seller does.