Do I need a license to charge a refrigerant system?
Yes. EPA Section 608 certification under 40 CFR Part 82 is required to connect gauges to and add or recover refrigerant from a sealed system. Refrigerant must never be vented; recovery is mandatory. Saturation temperatures here come from standard PT data and are field estimates good to roughly ±3 to 5 psi.
Answers
- How do I check the refrigerant charge with superheat or subcooling?
- What target superheat should a fixed-orifice system have?
- Should I charge by superheat or subcooling?
- What does high superheat and low subcooling mean together?
- Why does my target subcool come from the nameplate?
- What if outdoor temperature is very low during charging?
- Does refrigerant blend glide affect this calculation?