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What Are ASHRAE 62.1 and ASHRAE 62.2?
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Safety
As any builder, architect, and engineer knows, every residential or commercial building project must comply with local building codes. But codes represent the bare minimum—what’s necessary to pass inspection.
To move projects—and the construction industry as a whole—to the next level of performance, successful pros look for product specifications and design strategies that go above and beyond in energy savings, performance, and other attributes.
ASHRAE (the American Society of Heating, Refrigerating, and Air-Conditioning Engineers) standards, including ASHRAE 62.1 and ASHRAE 62.2, offer that opportunity for HVAC.
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The Future Building Code
In an industry that is often reluctant to change, ASHRAE standards (and similar programs such as ENERGY STAR, IndoorAIR PLUS by EPA, etc.) help advance product and building designs, improving efficiencies and encouraging new technologies.
ASHRAE and other standards often influence future versions of building codes. ASHRAE standards are created, changed, and updated using a consensus-based process according to ANSI processes.
Standards and guidelines from ASHRAE “include uniform methods of testing for rating purposes, describe recommended practices in designing and installing equipment and provide other information to guide the industry,” the organization explains.
They cover indoor air quality, thermal comfort, energy conservation, and refrigerant safety.
ASHRAE 62.1 and ASHRAE 62.2
ANSI/ASHRAE Standards 62.1 and 62.2 zero in on guidelines specific to ventilation systems and indoor air quality levels.
ASHRAE 62.1
ASHRAE 62.1, Ventilation and Acceptable Indoor Air Quality, addresses commercial applications, providing methods for meeting minimum ventilation rates to ensure optimal indoor air quality and reduce adverse health effects.
The standard offers guidelines for specific project types and specific products.
ASHRAE 62.2
ASHRAE 62.2, Ventilation and Acceptable Indoor Air Quality in Residential Buildings offers guidelines specific to homes, with “minimum requirements to achieve acceptable IAQ via dwelling-unit ventilation, local mechanical exhaust, and source control.”
Multifamily projects are primarily covered in ASHRAE 62.2, but some areas cross over to ASHRAE 62.1.
In general, ASHRAE 62.2 standards require “local mechanical exhaust” in the bathroom (bathroom fans) and the kitchen (exhaust fans or range hoods) that are either demand-controlled or continuous operation.
Demand-controlled systems must meet minimum ventilation requirements - at least 50 CFM for bathrooms, 100 CFM for vented range hoods in the kitchen, and 300 CFM for other exhaust systems in non-enclosed kitchens or 300 CFM or a capacity of 5 ACH for enclosed kitchens. These systems also must have a manual on/off control or an automatic control that doesn’t impede the manual ON control.
Continuous local exhaust must offer 20 CFM in the bathroom and 5 ACH based on room volume in the kitchen. The systems also must have a manual on/off control (except in multifamily units).
ASHRAE 62.2 addresses several other areas of the home, including requirements for attached garages, dryer exhaust, fuel-burning appliances, and air inlets.
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Residential Solutions
Visit Our Solutions to learn more about how our products comply with ASHRAE 62.1 and ASHRAE 62.2.
Meeting ASHRAE 62.2 Bathroom Standards With Fantech Products
Fantech offers a range of products that meet ASHRAE 62.2 standards in the bathroom, helping engineers, builders, and homeowners optimize building performance and ensure optimal indoor air quality.
The following Fantech fans are designed for intermittent or continuous operation to meet ASHRAE Standard 62.2:
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bathfan SC50-80-110 and bathfan SC50-80-110L (lighted):
Ceiling-mount units with selectable airflow settings of 50/80/110 CFM.
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PB fans:
Remote bathroom fans are available for 4” and 6” ducts with capacity options ranging from 110 to 370 CFM. LED models are available.
Learn More About ASHRAE 62.1 and ASHRAE 62.2
ASHRAE offers a range of training opportunities, including continuous education courses, a technology portal with articles and seminars, and more. Fantech team members also are available to help specifiers and buyers find the right products that also meet ASHRAE standards. Contact us here.
Learn More About Bathroom Ventilation
Want to learn more about bathroom ventilation? Visit our Downloads page and view our brochures.
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