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MIACCA Legislative Updates & Bills

HB 5376 Update Documents

MIACCA HB 5376 The Michigan State Senate Letter

MIACCA HB 5376 The Senate Regulatory Reform Committee. Letter

MIACCA Submits proposed 2018 Michigan Mechanical Code rules

Michigan Mechanical Code Rules Input

Code-RuleProposalRequestForm from MIACCA

 301.2 Energy utilization. Heating, ventilating and air-conditioning systems of all structures shall be designed and installed for efficient utilization of energy in accordance with the International Energy Conservation Code.

Exception: Any code provision or part of the system that does not meet the definition of “cost-effective” per MCL 125.1502a(p) and MCL 125.1504(3)(f) - (g) as determined by the mechanical inspector.

603.9 Joints, seams and connections. Longitudinal and transverse joints, seams and connections in metallic and nonmetallic ducts shall be constructed as specified in SMACNA HVAC Duct Construction Standards—Metal and Flexible and NAIMA Fibrous Glass Duct Construction Standards. Joints, longitudinal and transverse seams and connections in ductwork shall be securely fastened and with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems, liquid sealants or tapes.

Tapes and mastics used to seal fibrous glass ductwork shall be listed and labeled in accordance with UL 181A and shall be marked “181 A-P” for pressure-sensitive tape, “181 A-M” for mastic or “181 A-H” for heat-sensitive tape. Tapes and mastics used to seal metallic and flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked “181 B-FX” for pressure-sensitive tape or “181 B-M” for mastic. Duct connections to flanges of air distribution system equipment shall be sealed and mechanically fastened. Mechanical fasteners for use with flexible nonmetallic air ducts shall comply with UL 181B and shall be marked “181 B-C.” Closure systems used to seal all ductwork shall be installed in accordance with the manufacturer's instructions.

  • Exception: For ducts having a static pressure classification of less than 2 inches of water column (500 Pa), additional closure systems shall not be required for continuously welded joints and seams and locking-type joints and seams. This exception shall not apply to snaplock and button-lock type joints and seams located outside of conditioned spaces.
  • Exception: For ducts having a static pressure classification of less than 2 inches of water column (500 Pa) and located inside of the condition space, additional sealing shall not be required. REASONS
Reason for 301.2: Because the Bureau of Construction Codes is not promulgating the Energy Code at the same time and the Mechanical Code, which is broadly referencing the Energy Code, the suggested exemption language is needed for clarification that even referenced code provisions, that are enforceable, must still be "cost effective" as statutorily required. Additionally it must be made clear that mechanical inspectors that work in jurisdictions that have elected pursuant to MCL 125.1508b to administer and enforce the Stille-DeRossett-Hale Single State Construction Code Act, 1972 PA 230 and state code have the authority and responsibility to determine what is "cost effective". This exemption is consistent with the Bureau of Construction Codes published 2015 Michigan Residential Code Errors and Conflict document.
Reason for 603.9: The 2018 International Mechanical Code has already established that for ducts having a static pressure classification of less than 2 inches of water column that are located in the conditioned space does not need additional closure systems on continuously welded joints and seams and lockingtype joints and seams. However requiring ducts with other types of joints and seams to be sealed that are constructed in accordance with the mechanical code and located in a conditioned space will not see enough of an energy savings to meet the definition of "cost effective" and therefore not statutorily allowed. This exemption is consistent with the Bureau of Construction Codes published 2015 Michigan Residential Code Errors and Conflict document. Additionally to further support this exemption see attached mechanical resolution dated September 7, 2018 that was prepared by a mechanical engineer.

Revised Code of Conduct Proposed

Case No. U-18361

In the matter, on the Commission’s own motion, to promulgate rules 

MIACCA's Legislative Committee is currently at work for membership on these important issues::

  1. MIACCA package of 3 bills. Last Legislative Session MIACCA had HB5435-5437 introduced, then the Skilled Trades Regulation Act passed without our amendments; now we are trying to get the attached introduced.  .Sec. 737 of STA with HB5436 language.pdf Sec. 807 of STA with HB5437 language.pdf Sec. 1107 of STA with HB5435 language.pdf
  2. MPSC Code of Conduct.  See,4639,7-159-80741_80743-406276--,00.html
  3. Executive Order 2017-3 Sec 8.  See 
  4. Skilled Trades Regulation Act Administrative Rules 2017-009 LR, 2107-010 LR, and 2017-014 LR. Waiting on BCC. See:
  5. Adoption of the 2018 Michigan Residential Code. See:,4601,7-154-10575-449341--,00.html

State of Michigan LARA updates:

The Bureau of Construction Code has updated the Rule Promulgation Process.  To review the "Old vs New" process, Click Here

MIACCA Submits public comment on Code of Conduct rules change

An updated version of Code of Conduct rules was approved for all utilities and alternative electric suppliers (AESs) after comments from a public hearing were incorporated (Case No. U-18361). The new rules are intended to prevent cross-subsidization, preferential treatment, and information sharing between a utility’s regulated and unregulated services and programs. They also allow utilities to offer “value-added programs and services” to customers. The rules will be submitted to the Legislative Service Bureau and the Office of Regulatory Reinvention for their formal approvals.

View MIACCA's public comment

MIACCA asks Michigan Court of Appeals to apply the Michigan Residential Code (MRC) uniformly throughout the State.

On May 31, 2018, attorneys James Bruinsma and Kathleen Bruinsma of McShane & Bowie P.L.C., filed a great brief on behalf of MIACCA pointing out that the Single State Construction Code Act (SSCCA) requires that the MRC must be applied uniformly throughout the state and that local inspectors are not authorized to add or go beyond the code.  MIACCA’s brief also pointed out that SSCCA requires that both the local construction board of appeals and the Construction Code Commission must timely hear all appeals within 30 days, and that the Bureau of Construction Codes cannot delay an appeal with administrative procedures.



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