STAR Residential-Light Commercial HVAC Mastery Technicians stepping into residential or light commercial HVAC work—whether transitioning from general contracting or starting fresh in the trade—rely on STAR Residential-Light Commercial HVAC Mastery to fill critical gaps in system design, installation codes, and troubleshooting. The exam heavily weights EPA refrigerant handling, duct leakage calculations, and comfort diagnostics across split systems and small packaged units.
| Exam Name | STAR Residential-Light Commercial HVAC Mastery |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
