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International Mechanical Code

The 2009 International Mechanical Code, adopted as part of the New Hampshire State Building Code under RSA 155-A, effective April 1, 2010.

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International Mechanical Code is presented here as a reference within the IMC 2009 collection for New Hampshire. The 2009 International Mechanical Code, adopted as part of the New Hampshire State Building Code under RSA 155-A, effective April 1, 2010. Use the New Hampshire General Court, RSA 155-A to confirm the code edition currently adopted for the project, and compare the model text with state amendments, local amendments, effective dates and the permit authority's interpretation. The ICC code library is the model-code publication path. This Harth page is a searchable reference transcription, not an official code publication, legal opinion or confirmation that this edition controls a particular address. Record the project jurisdiction, application date, occupancy, construction type and amendment set before relying on a section. Where this page conflicts with an official publication or the authority having jurisdiction, the official source controls.

Authored and prepared by Harth. Review scope: official verification path added; code text and current local applicability have not been independently reviewed.

New Hampshire adopted the 2009 IMC as part of its statewide State Building Code under RSA 155-A, effective April 1, 2010. It covers the design and installation of mechanical and HVAC systems, including ventilation, exhaust, duct systems, combustion air, chimneys and vents, and heating and cooling equipment. The full text below is reproduced from the 2009 edition as adopted into law, sourced from public.resource.org.

Where verbatim source text is shown, it is reproduced from the code as adopted into law by the jurisdiction, sourced from public.resource.org under the government edicts doctrine (see Georgia v. Public.Resource.Org, Inc., 590 U.S. 255 (2020)). This material reflects enacted law and is provided for reference and educational purposes only. It is not legal advice and may not reflect local amendments or the most recently adopted edition. Always verify requirements with the authority having jurisdiction.