R-422B (NU-22) Refrigerant 25 LB | DrChillGas

• Virgin-grade refrigerant, spec-exact, not reclaimed
• Lowest price-match guarantee
• Coast-to-coast delivery in 2–4 days
• Bulk quotes back to you within 24 hours
（email us at amanda@drchillgas.com）

Important Notice: (virgin R422B can't be sold in California)

R-422B (NU-22B™) is an HFC blend (R-125 / R-134a / R-600a ≈ 65 / 31.5 / 3.5 wt %) designed as a drop-in replacement for R-22 in existing residential and light-commercial air-conditioning and medium-temperature refrigeration systems.

Key properties
• Zero ODP, non-flammable (ASHRAE A1)
• Operating pressures and capacity within ±5 % of R-22—no TXV or compressor changes required
• Compatible with mineral oil (MO) and alkylbenzene (AB); POE is optional
• Net 25 lb cylinder typical (cylinder + packaging ≈ 32 lb)

Retrofit checklist
Recover all R-22
Install or replace filter drier (same type/size)
Evacuate, leak-test, weigh in R-422B

Regulatory
• SNAP-approved for retrofit use; new R-22 equipment banned since 2010
• No production cap on HFC blends—stock remains available for service market

Environmental outlook
• GWP ~ 1 810 (IPCC AR5); interim solution pending transition to ultra-low-GWP refrigerants (R-454C, R-466A, etc.)

The cylinder(s) may come in grey or other colors.