The latest version of ASHRAE 189.1 will expand duct testing requirements to include low pressure ducts as well as high pressure ducts.
The latest updates to ASHRAE 189.1 have been finalized and incorporated into the standard. They will be published after undergoing a final accuracy review before publication.
A key update to the standard is the broadening of duct leakage testing to include ducts operating at 3-inch WG (water gauge). Currently, the current requirement for leakage testing applies to ducts operation at ≥4-inch WG.
“The industry has resisted testing because of the additional cost involved,” said Bob Reid, former chairman of ASHRAE Technical Committee 5.2 and chief engineer at SPOT (Spiral Pipe of Texas). “But in reality, building owners can either make a relatively small payment upfront to ensure their ducts are operating properly, or they can continue to pay higher operating costs throughout the life of the building.”
There are new duct sealing methods that provide a demolition-free way to meet the tightened duct-sealing specifications. For instance, an aerosol-based duct-sealing technology seals leaks from inside the ductwork.
Related Stories
Codes and Standards | Apr 26, 2018
New standard supports community resilience
ASTM International guidance supports cost-effective ways to withstand and recover from disasters.
Codes and Standards | Apr 25, 2018
Lessons learned from decades of Superfund cleanups guide contaminated land reuse
Sites repurposed for residential, commercial use, and solar energy generation.
Codes and Standards | Apr 24, 2018
Vibrant downtown core the key for urban multifamily development
Nighttime activity makes the difference.
Codes and Standards | Apr 19, 2018
ILFI launches new Zero Carbon Certification
Offers greater flexibility around project fuel types and offsetting renewables.
Codes and Standards | Apr 18, 2018
New Green Globe pilot program launched
Precursor to revised Green Globes Assessment Protocol for Commercial Buildings.
Codes and Standards | Apr 17, 2018
Contractor charged with fraud in winning $200 million in federal contracts
Accused of falsely claiming veteran- and minority-owned business status.
Codes and Standards | Apr 16, 2018
Wide variations in adoption of National Electric Code could jeopardize safety
An NFPA report found that code adoption is under heavier political scrutiny, leading to delays and decisions motivated by factors other than safety concerns.
Codes and Standards | Apr 12, 2018
Corruption in New York City construction industry is common
Scale of projects, number of players involved contributes to problem.
Codes and Standards | Apr 11, 2018
Urgent need for government to make communities, infrastructure more resilient
More than 350 people died from extreme weather events in 2017.
Codes and Standards | Apr 10, 2018
Boosting energy efficiency helps reduce health risks
Cleaner air results in fewer heart attacks, respiratory disease, and premature deaths.