Recover the old charge
Do not top off R22 with R422B. Recover the existing refrigerant completely before conversion.
A CLOSER LOOK
PRODUCT DETAILS & SPECIFICATIONS
R22 RETROFIT OPTION • A1
An evaluated retrofit path with oil-return support
R422B is an HFC-based blend developed to approximate R22 performance in certain direct-expansion air-conditioning applications. Its small hydrocarbon component can assist oil return in some mineral-oil or alkylbenzene systems, but every conversion still requires a professional system review.
Net content25 lb / 11.3 kg
Safety classA1 • non-flammable blend
CompositionR125 / R134a / R600a
Primary fitApproved R22 retrofits
Know exactly what you are ordering
Clear identification matters. Compare these details with the equipment nameplate, service documentation and cylinder label before connecting service tools.
| Refrigerant designation | R422B |
|---|---|
| Refrigerant family | HFC blend with hydrocarbon component |
| Blend composition by weight | R125 / R134a / R600a — 55% / 42% / 3% |
| Net refrigerant weight | 25 lb / 11.3 kg |
| Safety classification | A1 — lower toxicity, no flame propagation as formulated |
| Typical equipment | Evaluated R22 air-conditioning retrofit applications |
| Charging characteristic | Zeotropic blend; liquid charging required |
| Intended user | Qualified HVAC/R professionals |
Built for the correct system—not every system
Common compatible work
- Selected direct-expansion A/C systems being converted from R22
- Compatible systems previously converted to R417A, after professional evaluation
- Equipment where piping and oil-return conditions are suitable
- Service projects supported by a written retrofit procedure
Confirm before ordering
- Capacity and run-time changes are acceptable for the application
- Oil return is adequate throughout the actual piping layout
- The compressor, elastomers, controls and expansion device are compatible
- A POE oil addition is evaluated for complex piping or large oil hold-up volumes
Plan the charge before opening the valve
Charge as liquid
Preserve the formulated blend by removing liquid from the cylinder and metering it according to accepted procedure.
Commission and document
Check operating pressures, temperatures, superheat, subcooling and oil return, then relabel the system.
Compatibility is mandatory
R422B is a retrofit option, not a universal drop-in. A slight capacity change may occur. System design, piping, oil, metering and controls must be evaluated before use, and R422B must never be mixed with R22 or another refrigerant.
!
Restricted refrigerant sale
Bulk refrigerant sales in the United States are restricted. Proof of the applicable Section 608 or Section 609 technician certification—or documentation that the purchaser employs a properly certified technician—may be required before fulfillment. The purchaser is responsible for satisfying federal, state and local rules for purchase, transport, storage and use.
S
Handling and storage
Keep the cylinder upright, capped and secured in a cool, dry, ventilated space. Avoid high heat and physical damage, and consult the current safety data sheet before handling. Refrigerant can displace oxygen, cause cold burns and create dangerous pressure if mishandled. Never intentionally vent refrigerant.
01SHIPPINGReview destination eligibility, delivery conditions, and the current Shipping Policy before ordering.
02COMPATIBILITYConfirm refrigerant type, system requirements, and container quantity before purchase.
03ORDER SUPPORTContact Comocean Cycles when you need help with product or order information.