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24 School Street; West Dennis, MA 02670

Duct Testing

Target Inspections offers independent third party duct leakage testing (also called duct blast testing) to meet all applicable codes and standards including the Massachusetts Stretch Energy Code.

The Prescriptive Method of the Stretch Energy Code 780 CMR 115.AA Appendix 120 AA, Section 401.3 requires – Ducts for new HVAC systems shall be sealed and testing post-construction to demonstrate leakage to the outdoors of less than or equal to 4 cfm (cubic feet per minute) per 100 square feet of conditioned floor area, except where the air handler and all ducts are located within conditioned spaces.

Duct Air Leakage Testing Services include –
  • Total Duct Leakage testing - measure to total leakage of the system for overall efficiency of the HVAC duct system.
  • Duct Leakage testing to the outdoors – measure duct leakage in un-conditioned areas to the outdoor environment utilizing duct blaster and blower door system. Required in Stretch Energy Code Cities/Towns.
  • Duct Leakage Tracing – system testing to find leaks in the duct system to help meet code requirements.

Duct Air Leakage Testing is also required in towns that are not instituting the Stretch Energy Code and are following 2012 IECC (International Energy Conservation Code) requirements. Current Stretch Code towns are still required to meet the 2009 IECC code requirements only.

2009 IECC code requirements are one of the following 4 options

Option 1 - At rough-in, air handler not installed – Duct Blast Test Ducts Only – Max leakage 4 cfm per 100 sq ft.
Option 2 – At rough-in, air handler installed – Duct Blast Test w/ indoor unit – Max leakage 6 cfm per 100 sq ft.
Option 3 – Post-Construction, leakage to outdoors – Blower Door Test – Max leakage 8 cfm per 100 sq ft.
Option 4 – Post-Construction, total leakage – Duct, Registers, Indoor unit – Max leakage 12 cfm per 100 sq ft.

2012 IECC code requirements are one of the following 2 options

Leakage to the Outside is no longer an option in 2012 IECC

Option 1 - At any point, air handler and ducts installed – Total Duct Leakage – Max leakage 4 cfm per 100 sq ft.
Option 2 – At rough-in, air handler not installed – Duct Blast Test Ducts Only – Max leakage 3 cfm per 100 sq ft.

Price Match Guarantee for Duct Testing: Show us any invoice for a similar project or a quote for a current project from a third party inspection company and we will match that price, Guaranteed! (Location Restrictions may apply).

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