ANSI/AARST CCAH-2020, explained
ANSI/AARST CCAH-2020, published under the title Reducing Radon in New Construction of One & Two Family Dwellings and Townhouses, is the AARST consensus standard covering rough-in of radon control system components for this class of building. It is harmonized to complement ANSI/AARST RRNC, the standard that governs the rough-in construction activities themselves, and adds the verification and activation requirements that follow once a house is built.
Like every AARST radon standard, CCAH-2020 only applies where a jurisdiction has adopted it, whether directly or by reference through the IRC radon appendix. Adoption is not automatic, and the naming of the parallel IRC appendix has changed across code cycles. See our IRC Appendix BE page for the current 2024 IRC naming, and our jurisdiction adoption map for what has actually been adopted where.
In the standard's own words
“This standard provides minimum requirements for the rough-in of radon control system components in new dwelling units under construction.”
ANSI/AARST CCAH-2020, Scope — source
“This standard was developed to respond to the threat of cancer caused by radon gas in homes.”
ANSI/AARST CCAH-2020, Purpose — source
Where this fits our packages
Our single-family rough-in packages are drawn to the prescriptive residential codes, including the requirements CCAH-2020 sets for rough-in components. We do not perform the post-construction radon testing or system activation CCAH-2020 also covers — that work is done on-site by a certified radon tester after occupancy.
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Send us your building plans and we return a fixed quote for a permit-ready radon rough-in package, reviewed against the standards your plans examiner checks.