Indoor AirPlus Program Documents
Indoor AirPlus continues to update many of its program documents based on stakeholder feedback, revised industry standards, and evolving best practices in building science and home performance. The latest updates in Indoor AirPlus Version 2 are now available for use.
The Indoor AirPlus Version 2 framework includes substantive updates to the certification protocols and verification requirements, as well as new logos and branding resources. IAP Version 2 is available for homes and multifamily buildings permitted on or after August 1, 2024. However, the Version 1 specifications and program framework can also continue to be used for homes and multifamily buildings permitted before January 2026 (eligibility dates subject to change). The latest Indoor AirPlus program requirements and companion guidance for both Versions, including the most current Version 1 Policy Record, can be found below.
For additional background on the Indoor AirPlus Version 2 development process, the EPA’s response to public comments, and a summary of updates of notable changes, please see the Indoor AirPlus Version 2 Development webpage.
See also the Indoor AirPlus Technical Bulletins webpage for additional information on particular areas of interest.
Indoor AirPlus Version 2
Indoor AirPlus Verification Requirements, Version 2 (PDF)
(38pp, 1.6 MB, July 2024, EPA-402-K-24/003)
The Indoor AirPlus Verification Requirements (Version 2) includes the design, construction, and verification requirements for both Indoor AirPlus Certified and Indoor AirPlus Gold Certified homes.
Indoor AirPlus Version 2 Builder Responsibilities (PDF)
(3pp, 220 KB, July 2024, EPA-402-K-24/003)
The Indoor AirPlus Version 2 Builder Responsibilities include specifications that are the exclusive responsibility of the builder to implement for each certified home/building. See the full Indoor AirPlus Verification Requirements for more detail.
Indoor AirPlus: How to Find Compliant Building Materials (PDF)
(8pp, 1 MB, July 2024, EPA-402-K-24/002)
This resource was developed to help builders, designers, and Verifiers find products that are compliant with the requirements for low-emission materials under Indoor AirPlus Version 2.
Indoor AirPlus National Program Requirements, Version 2 (PDF)
(3pp, 98 KB, July 2024, EPA-402-K-24/008)
The Indoor AirPlus National Program Requirements (Version 2) describes the eligibility requirements; partnership, training and credentialing requirements; and the certification process for homes and apartments. It also includes the implementation timeline to determine the Version and, if applicable, the Revision that is required to be used for each home or apartment.
Indoor AirPlus Certification Protocol (PDF)
(2pp, 168 KB, July 2024, EPA-402-K-24/006)
The Indoor AirPlus Certification Protocol for Homes and Apartments lists the key documents that comprise the Indoor AirPlus Version 2 certification scheme.
Indoor AirPlus Version 1
Indoor airPLUS Version 1 (Rev. 04) Construction Specifications (PDF)
(18pp, 1 MB, Feb. 2018, EPA-402-K-13/001)
This document contains the revised Indoor airPLUS Version 1 (Rev. 04) Construction Specifications and verification checklist, as well as instructions for building and verifying Indoor airPLUS homes.
- The U.S. Department of Energy’s Building America Solution Center hosts an interactive supplement to the Indoor airPLUS Construction Specifications, which provides information on many high-performance residential construction topics, including air sealing and insulation, HVAC components, windows, and much more!
Rev. 04 Verification Checklist - Fillable (PDF)
(2 pp, 837 K, March 2018)
This document is the same checklist included in the full Indoor airPLUS Construction Specifications. This fillable PDF provides a stand-alone checklist for the home energy rater that can be used to verify the requirements for building an Indoor airPLUS labeled home. Be sure to refer to the full Construction Specifications for complete details of each checklist item, as well as the Indoor airPLUS Policy Record which may contain clarifications and updates since the latest published revision of the Specifications.
How to Find Indoor airPLUS Compliant Low-Emission Products;(PDF)
(10;pp, 618;K, Oct. 2015)
This resource was developed to help builders, designers, and Home Energy Raters find products that are compliant with the Indoor airPLUS Construction Specification requirements for low-emission materials.
To request that other compliant certifications or programs be added to this resource or for additional questions about these or other Indoor airPLUS Construction Specifications, please contact Indoor_airPLUS@epa.gov.
Indoor airPLUS Version 1 Policy Record (PDF)
(44 pp, 755 K, Dec. 2021, EPA 402-K19-006)
This policy record was updated on December 2021, and contains all official program updates on policy issues identified, under review, and/or resolved at the time of release of the most recent revision to the Indoor airPLUS Construction Specifications (Rev. 04, February 2018). Future updates will include changes, clarifications, and refinements that will be included into the next revision of the Construction Specification and Verification Checklist.
Indoor airPLUS Exemption Request Policy and Process v1.0 (PDF)
(1 p, 64K, May 2017)
This Exemption Request Policy and Process document (active as of May 1, 2017) provides the opportunity for partners to request an exemption where a project(s) cannot meet one or more of the requirements or processes outlined in the program documents. Exemption requests may apply to a new interpretation, policy, or procedure, either for a specific project or broader application. Exemption requests should always reference the Specification Item in question. If a question arises that is not specifically addressed by the Indoor air PLUS Construction Specifications, a request for clarification can also be made following this process.