Buy R422B Refrigerant | R22 Retrofit Replacement | Free Shipping — Refrigerant Inc

R422B Refrigerant — R22 Retrofit Replacement, Free Nationwide Shipping

R-422B is an HFC blend refrigerant used as a retrofit replacement for R22 in older residential and commercial air conditioning systems. With R22 production phased out and prices rising, R422B offers a practical servicing option for contractors maintaining existing R22 equipment that isn't yet ready for full system replacement. Refrigerant Inc stocks genuine, virgin R422B with free shipping to all 48 continental states.

What Systems Use R422B?

R422B is used as a retrofit refrigerant in older R22 air conditioning and heat pump systems including:

• Residential split system air conditioners manufactured before 2010
• Light commercial packaged AC units originally charged with R22
• Heat pumps designed for R22 operating ranges

R422B is not used in new equipment — it is specifically a retrofit/service refrigerant for the existing R22 installed base.

R422B vs. R22 — What Contractors Need to Know

R422B operates at pressures close to R22, making it compatible with most existing R22 system components without major hardware changes. However, there are important considerations before converting an R22 system to R422B:

• Oil compatibility: R422B requires POE (polyolester) lubricant. Most R22 systems run on mineral oil or alkylbenzene oil. A partial oil change is typically required — follow the refrigerant manufacturer's retrofit guidelines for oil flush procedures.
• Recover existing R22 first: You must fully recover the existing R22 charge before introducing R422B. Mixing refrigerants is not acceptable practice and creates an unidentifiable blend.
• System capacity: Expect some variation in system capacity and efficiency compared to the original R22 charge. Verify suction and discharge pressures against R422B PT charts after charging.
• Label the system: After retrofitting, clearly label the equipment with the new refrigerant type, charge weight, and date of conversion.

R422B vs. Other R22 Replacements

Several refrigerants are used as R22 alternatives. Here's how R422B compares to the most common options we carry:

• R438A (MO99) — Generally considered the closest performance match to R22, widely used in the U.S. market for R22 retrofits
• RS-44b (R453A) — The closest pressure and capacity match to R22, designed as a near drop-in with minimal oil change requirements
• R422B — A well-established retrofit option, particularly in older commercial equipment

Not sure which R22 replacement is right for your system? Call us at 888-593-7366 — we can help you choose based on the equipment type and application.

Why Buy R422B From Refrigerant Inc

• Virgin, Factory-Sealed Product — Genuine R422B, never reclaimed or gray market.
• Free Shipping to All 48 States — No freight fees added at checkout.
• Same or Next-Day Processing — Orders placed before 2PM EST ship the same day.
• Contractor & Wholesale Pricing — Volume accounts available. Call 888-593-7366.

Shipping Information

R422B ships via ground freight to all 48 continental states. Alaska and Hawaii excluded. Most orders ship within 1 business day. Transit time is typically 2–5 business days depending on location.

Frequently Asked Questions

Is R422B a true drop-in for R22?
R422B is often called a "drop-in" but a partial oil change is recommended for optimal performance and compressor longevity. Recover the existing R22, perform an oil flush per the manufacturer's guidelines, then charge with R422B. Full system component replacement is not required.

Do I need to change the oil when switching to R422B?
Yes, a partial oil change to POE lubricant is recommended. R422B is not fully compatible with the mineral oil typically used in R22 systems. Follow the refrigerant manufacturer's retrofit procedure for the recommended oil flush method.

How does R422B compare to just using R22?
R22 remains the best-performing refrigerant for R22 systems, but with limited supply and high prices, R422B is a practical alternative for extending equipment life. Performance will be slightly different — verify operating pressures using R422B PT charts after charging.

Can I mix R422B with leftover R22 in the system?
No. Always recover the existing R22 charge completely before introducing R422B. Mixing creates an unidentifiable refrigerant blend that cannot be properly serviced or recovered.