EPA Indoor airPLUS

EPA Indoor airPLUS
Name	EPA Indoor airPLUS
Established	2012
Administrator	United States Environmental Protection Agency
Type	Voluntary certification

EPA Indoor airPLUS is a voluntary building certification program administered by the United States Environmental Protection Agency that supplements Energy Star for homes and promotes measures to reduce indoor air pollutants, improve ventilation, and protect occupant health. The initiative aligns with federal efforts such as the Clean Air Act and interfaces with programs run by entities like the Department of Housing and Urban Development, National Institute for Occupational Safety and Health, and state-level agencies in California, New York, and Massachusetts. It targets builders, developers, inspectors, and homeowners with prescriptive practices that complement codes and standards administered by organizations such as the International Code Council and the American Society of Heating, Refrigerating and Air-Conditioning Engineers.

Overview

The program provides construction specifications and checklists for new single-family homes, multifamily dwellings, and some remodeling projects, integrating measures from standards including ASHRAE Standard 62.2-2010 and cross-referencing test methods from the U.S. Green Building Council and the American National Standards Institute. Designed to reduce exposure to contaminants such as formaldehyde, radon, lead dust, and combustion byproducts, the specification set references guidance from the Centers for Disease Control and Prevention, Agency for Toxic Substances and Disease Registry, and the World Health Organization on indoor air quality and public health. EPA Indoor airPLUS complements labeling programs like LEED for Homes and links to appliance standards set by the U.S. Department of Energy and Underwriters Laboratories.

History and Development

Development began in the late 2000s as part of the EPA’s broader portfolio including Energy Star and followed precedents set by programs such as Green Globes and regional initiatives like Build It Green in California. Key milestones include the 2012 formal launch, subsequent revisions to address emerging contaminants and ventilation science, and collaborations with researchers from institutions such as Harvard T.H. Chan School of Public Health, Johns Hopkins Bloomberg School of Public Health, and University of California, Berkeley. The program incorporated findings from federal advisory committees and task forces involving stakeholders including the National Association of Home Builders, American Lung Association, and state public health departments.

Certification Criteria and Program Requirements

Requirements are organized into categories addressing moisture control, combustion safety, low-emission materials, radon-resistant construction, pest management, and ventilation, referencing test and certification protocols from Underwriters Laboratories, National Radon Proficiency Program, and Occupational Safety and Health Administration. For low-emitting materials the program cites standards used by ASTM International and the California Air Resources Board; for HVAC filtration it references filtration classifications from MERV ratings promulgated by ASHRAE. Documentation and field verification are required by third-party verifiers analogous to practices used by RESNET and certification bodies recognized by the International Accreditation Forum. Builders must retain records comparable to compliance files used under programs like Federal Housing Administration mortgage insurance for green homes.

Implementation and Compliance

Implementation relies on training for builders and verifiers provided by partners such as the National Association of Home Builders and state energy offices in Vermont, Oregon, and Washington. Compliance mechanisms include plan review, on-site inspections, and testing procedures (e.g., blower-door testing, combustion appliance zone testing, and radon testing) consistent with protocols from ASTM International and the National Institute of Standards and Technology. Enforcement is voluntary and carried out through certification withdrawal or suspension similar to actions taken within Energy Star and other voluntary labeling schemes administered by the Environmental Protection Agency.

Impact and Effectiveness

Evaluations by academic and governmental researchers at institutions such as University of Michigan, University of Minnesota, and Columbia University have assessed reductions in pollutant levels and improvements in ventilation rates when EPA Indoor airPLUS measures are implemented alongside Energy Star construction. Reports by the Government Accountability Office and analyses used by the Department of Energy indicate benefits for occupant health and building durability, while noting variability based on builder adherence, regional climate considerations referenced by the National Oceanic and Atmospheric Administration, and differences in housing stock studied by the Census Bureau. Studies also compare outcomes to those documented in programs run by the U.S. Green Building Council and local green building councils.

Related Programs and Partnerships

The program interoperates with federal and nonprofit programs including Energy Star, HUD's Office of Lead Hazard Control and Healthy Homes, and workforce training by the National Center for Healthy Housing and Building Performance Institute. Internationally, concepts echo initiatives such as Passive House and standards promoted by the European Committee for Standardization. Partnerships have included manufacturers certified by Underwriters Laboratories and testing labs accredited under schemes administered with the National Voluntary Laboratory Accreditation Program. EPA Indoor airPLUS also aligns with research partnerships at centers like the National Renewable Energy Laboratory and collaborates with state green building programs to scale best practices.

Category:United States Environmental Protection Agency programs