Duct Leakage Testing for
Westchester HVAC Contractors
Fast scheduling. Signed report before we leave. Done.
Why Contractors Use Us
Fast Scheduling
We know you can't hold up the job. Rush service available for urgent jobs. No waiting a week for a tester to show up.
Report On-Site
Signed test report handed to you before we leave. Readings, code references, pass/fail determination — everything the building department needs. No waiting for emailed PDFs.
Contractor Pricing
Volume pricing available for Trade Partners running multiple jobs a month. Your cost, not your customer's problem. Transparent pricing, no surprise fees.
How It Works
Book the Test
Call or submit the form. Tell us the project address, number of systems, whether the AHU is installed, and when the ductwork is ready. We confirm your scheduling quickly.
We Run the Test
Technician arrives with a calibrated duct blaster and digital manometer. We seal all registers, pressurize the duct system to 25 Pa (0.1″ w.g.), and measure total leakage in CFM.
You Get the Report
Pass or fail, you get a signed test report with all readings, applicable code references (ECCCNYS R403.3.7), and a clear pass/fail determination. Hand it to the building department.
Why Testing Is Required
The NYS Energy Conservation Construction Code (ECCCNYS), effective December 31, 2025, requires duct leakage testing for all residential duct installations under Section R403.3.7. Maximum allowable leakage: ≤ 4 CFM/100 sf (rough-in with AHU) or ≤ 3 CFM/100 sf (rough-in without AHU). Testing methodology per ANSI/RESNET/ICC 380. This applies to new construction and retrofits — any duct installation as part of an alteration must comply per R503.1.2.
Serving Every Municipality in Westchester County
Plus Rockland County, southern Putnam County, and lower Fairfield County, CT.
Westchester County, NY
Rockland County, NY
Putnam County, NY
Fairfield County, CT
Fast scheduling for HVAC contractors.
Rush service available. No waiting a week for a tester to show up.
Response within 1 hour during business hours · Mon–Fri 7 AM–6 PM · Sat 8 AM–2 PM
Backed By
Westchester Duct Testing is operated by Marcy Engineering, PLLC, a licensed professional engineering firm based in Harrison, NY, serving residential HVAC contractors throughout the tri-state area.