| Aspect | 87111 | 87112 |
|---|
| Credentials | Typically requires certification in HVAC or refrigeration | Similar certification requirements, often overlapping with 87111 |
| Work Environment | Indoor and outdoor HVAC systems, commercial and residential settings | Similar work environments, focusing on HVAC system installation and repair |
| Industry Usage | Commonly used in HVAC, refrigeration, and mechanical services | Often used interchangeably in HVAC and refrigeration sectors |
Both 87111 and 87112 involve HVAC and refrigeration work, with overlapping credentials and work environments. The main difference lies in specific job duties or regional usage, but they are often considered similar roles within the industry.