Duct Testing for Title 24
Duct testing is required when specifified in the Title-24 compliance documentation or when HVAC equipment is changed out and or the ducts are altered. This applies to residential and commercial applications.
Duct testing must be performed by an independant, third party, state certified HERS raters and involves pressuring the duct system to a specified level and verifying that the ducts leak at a rate no greater than 6% of the total airflow. A greater amount of duct leakage is allowed for retrofit HVAC work.
Most of the state sponsored incentive programs and most utility sponsored incentive programs require duct testing as a prerequisite for acceptance into their incentive programs.
You can view a brief video here which explains how what is involved in the duct test and the benefits.
The new 2008 Title-24 Building Energy Standards which take effect January 1, 2010 include a mandatory requirement for duct testing if the air handling unit (furnace) is located in the garage or return ducts are located in the duct (regardless of the air handler location). This requirement is triggered by the new residential ventilation requirements and is separate from other energy code related prescriptive requirements within Title-24 that would also trigger duct testing. The bottom line is that duct testing will be “par for the course” in the new energy code starting August 1 of this year as it will be unlikely a project will comply with Title-24 or the ventilation code without it.
We are state certified HERS raters for both the current 2005 energy code and the new 2008 Title-24 Building Energy Standards which take effect January 1, 2010.
If you need duct testing for new projects or HVAC equipment changes call us at: (800) 700-0131