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NSF publishes standards for ground-source geothermal piping systems

January 10, 2013
KEYWORDS NSF / piping / standards
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ANN ARBOR, Mich. — NSF International has published the first in a series of American National Standards for Ground-Source Geothermal Piping Systems — NSF/ANSI 358-1, according to a press release.

This new standard, which will be referenced in the 2015 International Mechanical Code, provides engineers, regulators and users assurance that certified geothermal products meet minimum performance and safety requirements, reducing potential liability and increasing confidence and product acceptance in the marketplace, stated the release.

Geothermal heat pump systems provide heating or cooling by moving heat, rather than by creating heat such as conventional systems like furnaces do.

[Related content: NSF certifies piping and fittings for fire protection requirements]

While conventional heating systems rely on outdoor temperatures that may often vary, underground temperatures remain relatively constant; hence geothermal systems can produce the desired heating and cooling temperature year round, noted the release.

Geothermal piping systems have gained popularity in recent years for residential and commercial building applications for their innumerable benefits such as low operating costs and environmental impact, long-term durability and ease of retrofitting.

[Related content: NSF receives Green Ribbon Award at ACE12]

To help support the acceptance of this technology, NSF International worked with expert engineers, piping manufacturers, and academic and regulatory representatives to develop the consensus-based standard.

NSF/ANSI 358-1: Polyethylene Pipe and Fittings for Water-Based Ground-Source “Geothermal” Heat Pump Systems establishes minimum physical and performance requirements for geothermal piping system components, including long-term strength and quality control requirements that are key to ensuring product performance in the field.

Read the entire press release here.

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