What types of mechanical systems are required to undergo periodic inspections according to Michigan law?

In Michigan, the law requires that certain mechanical systems are subject to periodic inspections to ensure safety and compliance with regulations. Among these, boilers, pressure vessels, and commercial HVAC systems stand out as particularly critical due to their potential risks and operational complexity.

Boilers and pressure vessels are inherently associated with high-pressure conditions and can pose significant hazards if not maintained properly. Routine inspections help identify potential issues before they lead to failures that could result in safety incidents or significant property damage. Similarly, commercial HVAC systems, which serve larger buildings and public spaces, are essential for maintaining safe temperatures and air quality. Regular inspections ensure these systems operate efficiently and effectively, minimizing the risk of breakdowns and maintaining compliance with safety standards.

Other options, while they may involve mechanical systems, do not typically fall under the strict periodic inspection requirements established by Michigan law. For instance, residential heating systems do not have the same regulatory framework as commercial systems. Non-commercial refrigeration units are often less regulated due to their size and usage, while air conditioning units also tend to have fewer inspection mandates compared to commercial HVAC systems. Therefore, the designated focus on boilers, pressure vessels, and commercial HVAC systems aligns with the legislative intent to prioritize safety and compliance in more complex and potentially hazardous mechanical operations.