MDE1S Class Air Conditioning Contractor Many contractors overlook the refrigerant recovery regulations and EPA Section 608 nuances that appear throughout this exam. Misunderstanding superheat calculations or confusing pressure-enthalpy relationships costs points, as does glossing over local code variations in equipment installation. The MDE1S Class air conditioning contractor exam penalizes those who haven’t drilled evaporator and condenser efficiency factors or confused refrigerant types with their respective pressure limits.
| Exam Name | MDE1S Class Air Conditioning Contractor |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
