Frequently Asked Questions

• Which refrigerant type (R-410A, R-32, R-22 replacements, etc.) is compatible with my existing system?

  Use the unit nameplate and OEM documentation. Many systems are designed for a specific refrigerant; replacements like R-407C or R-422B may require retrofit steps. Never mix.

• Do I need EPA Section 608 certification to purchase and handle these refrigerants?

  Certification is required for restricted refrigerants (e.g., R-22) and for servicing stationary HVAC equipment. Supplier policies and local rules may also apply to HFCs and A2Ls.

• What container size should I choose: small canisters vs 20-30 lb jugs?

  Use 10-28 oz cans for diagnostics and small top-offs. Choose 20-30 lb jugs for full charges, changeouts, larger systems, or fleet maintenance to reduce cost per pound.

• What safety precautions are required when handling flammable refrigerants like R-290?

  Work in ventilated areas, eliminate ignition sources, use rated components and tools, charge by weight, leak-check with approved methods, and follow local codes and labeling.

• How do brazing gases and line flush products fit into a typical refrigerant service workflow?

  Recover refrigerant, braze repairs with proper purge, pressure test, evacuate, flush lines to remove oil/acid/debris when needed, then weigh in the charge and verify performance.

• Can Hot Shot 2 or R-422B be used as a direct drop-in for R-22 systems?

  They are R-22 replacements, not true drop-ins. Expect oil compatibility checks (often POE), capacity/pressure differences, and system labeling. Do not mix with remaining R-22.

• How should refrigerant cylinders be stored and transported?

  Keep upright with caps on, secured from tipping, in a cool, dry, ventilated area. Segregate flammables, follow DOT rules, and never leave cylinders in hot vehicles.

• What is the difference between R-404A, R-407C, and R-410A in terms of typical applications?

  R-404A: low/medium-temp refrigeration. R-407C: R-22-like pressures for comfort cooling retrofits. R-410A: high-pressure refrigerant for most modern AC/heat pumps.

• How do I determine the correct charge amount?

  Follow the unit nameplate and OEM procedures. Weigh in the factory-specified charge, adjust for line-set length, then confirm via superheat/subcooling targets.

• Do SEER2 ratings affect which refrigerant I should use?

  No. SEER2 indicates efficiency, not refrigerant choice. The system is engineered for a specific refrigerant; always match and charge according to the manufacturer.