Service Area › Westchester County

Duct Leakage Testing in Elmsford, NY

Same-day scheduling · Signed report on-site · Contractor pricing

Serving Elmsford HVAC Contractors

A small but centrally located village in the Town of Greenburgh, Elmsford sits at the crossroads of several Westchester communities and serves as a hub for HVAC contractor activity in mid-county.

Westchester Duct Testing provides residential duct leakage testing for HVAC contractors throughout Westchester County. We show up, run the test, and hand you the signed report before we leave. Same-day and next-day scheduling available. Call by 10 AM for same-day service.

Why Contractors in Elmsford Choose Us

⚡Same-day and next-day availability. We're based in Harrison, NY — tight Westchester geography means fast dispatch times across Westchester County.
📋Signed report before we leave. You get the test report — with all readings, code references, and pass/fail determination — before we walk off the job. No waiting for emailed PDFs.
💲Contractor pricing. Standard tests from $450. Volume accounts (5+/month) at $375, 10+/month at $325. Re-tests $200. Transparent pricing, no surprises.
🏗️PE-backed credibility. Operated by Marcy Engineering, PLLC — a licensed professional engineering firm. Building departments trust the report.

Code Requirements

The 2025 NYS Energy Conservation Construction Code (ECCCNYS) requires duct leakage testing for all residential duct installations — including retrofits in existing buildings (R503.1.2). Maximum allowable leakage thresholds per R403.3.8:

Rough-in (AHU not installed)

≤ 3 CFM/100 sf

Rough-in (AHU installed)

≤ 4 CFM/100 sf

Post-construction

≤ 4 CFM/100 sf

Test methodology: ANSI/RESNET/ICC 380 · Pressurization at 25 Pa (0.1″ w.g.)