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[Repealed, 32 SR 12]


Subpart 1.

IRC section R315.2, Where required.

Section R315.2 is amended to read as follows:

R315.2 Where required. Carbon monoxide alarms shall be provided in accordance with sections R315.2.1 and R315.2.2.

R315.2.1 New construction. For new construction, every one-family dwelling unit, each unit in a two-family dwelling unit, and each townhouse dwelling unit shall be provided with an approved and operational carbon monoxide alarm where one or both of the following conditions exist:

1. The dwelling unit contains a fuel-fired appliance.

2. The dwelling unit has an attached garage with an opening that communicates with the dwelling unit.

R315.2.2 Alterations, repairs, and additions. An individual dwelling unit shall be equipped with carbon monoxide alarms located as required for new dwellings where:

1. alterations, repairs (including installation or replacement of windows or doors), or additions requiring a building permit occur; or

2. one or more sleeping rooms are added or created in existing dwellings.


1. Work involving the exterior surfaces of dwellings, such as the replacement of roofing or siding, the addition of an open porch or deck, or chimney repairs.

2. Installation, alteration, or repairs of plumbing, electrical, or mechanical systems.

Subp. 2.

IRC section R315.3, Location.

Section R315.3 is amended to read as follows:

R315.3 Location. Carbon monoxide alarms in dwelling units shall be installed outside of and not more than 10 feet (3048 mm) from each separate sleeping area or bedroom. Alarms shall be installed on each level containing sleeping areas or bedrooms. Where a fuel-burning appliance is located within a bedroom or its attached bathroom, a carbon monoxide alarm shall be installed within the bedroom.

Subp. 3.

IRC section R315.5, Interconnectivity.

Section R315.5 is amended by modifying the exception to read as follows:

Exception: Interconnection of carbon monoxide alarms in existing areas shall not be required where alterations or repairs do not result in removal of interior wall or ceiling finishes exposing the structure.

Subp. 4.

IRC section R315.6, Power source.

Section R315.6 is amended by modifying the second exception to read as follows:

2. Carbon monoxide alarms installed in existing areas shall be permitted to be battery powered provided any alterations or repairs do not result in the removal of interior wall or ceiling finishes exposing the structure.

Statutory Authority:

MS s 326B.02; 326B.101; 326B.106


39 SR 91; 44 SR 764

Published Electronically:

March 31, 2020

Official Publication of the State of Minnesota
Revisor of Statutes