R-422B Refrigerant 25 lb Jug — Complete R-22 Replacement, No Retrofit or Oil Change
R-422B is a straightforward R-22 replacement: evacuate the old R-22, charge with R-422B, and the system runs on an ozone-friendly refrigerant with no retrofit and no oil replacement required. It can completely replace R-22 in new or existing residential and commercial air conditioning systems and in non-flooded evaporator chillers. This 25 lb jug is the generic R-422B option (brands may vary), so it's a good fit when you want the R-422B chemistry without paying for a particular brand name. Purchase requires EPA Section 608 certification.
Is R-422B the Right Way to Retire R-22?
R-422B fits property managers and contractors with working R-22 equipment that isn't ready for replacement. Switching keeps the existing condenser, coil, and oil in service while moving off R-22.
The one firm rule: R-422B cannot be added to R-22. The old charge must be fully evacuated and the system recharged with R-422B. If you need an R-22 replacement you can top off, look at Freon™ MO99 (R-438A).
Ideal for: Complete changeovers of R-22 residential and commercial air conditioners and non-flooded evaporator chillers.
Prefer the name brand? The NU-22B (R-422B) 25 lb jug is the branded version of this refrigerant.
Refrigerant purchases require the Refrigerant Agreement and proof of EPA Section 608 certification. Conversion results depend on system design and the equipment manufacturer's recommendations. For use by qualified HVAC/R technicians. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Refrigerant | R-422B (brands may vary) |
|---|---|
| Net Weight | 25 lb |
| Replaces | R-22 (complete replacement) |
| Application | Residential & commercial AC, non-flooded evaporator chillers |
| Retrofit | No retrofit required |
| Oil | No oil replacement required |
| Mixing with R-22 | Not allowed; fully evacuate first |
| Purchase Requirement | EPA Section 608 certification |
A 25 lb supply of R-422B to move an R-22 system to a new refrigerant with an evacuate-and-recharge changeover.
Refrigerant & Changeover Features
R-422B Refrigerant
- Complete replacement for R-22
- Ozone-friendly alternative to R-22
- For new or existing R-22 systems
- Residential air conditioning
- Commercial air conditioning
- Non-flooded evaporator chillers
- Brands may vary by supplier
- Same ASHRAE chemistry as NU-22B
- 25 lb jug for full charges
- For qualified HVAC/R technicians
Changeover Steps
- Recover and fully evacuate the R-22
- No retrofit of components required
- No oil replacement required
- Charge the system with R-422B
- Never mix with R-22
- Label the system with the new refrigerant
- Monitor operation after startup
- Use certified recovery equipment
- Replace the filter drier as needed
- Keep the existing condenser and coil
Frequently Asked Questions
What's the difference between this and NU-22B?
Both are R-422B. NU-22B is a specific brand name, while this jug is R-422B from whichever brand is in stock.
Can I add R-422B to a system that still has R-22 in it?
No. R-422B cannot be added to R-22. Fully evacuate the R-22 first, then recharge the system with R-422B.
Will I need new parts to switch to R-422B?
No retrofit or oil replacement is required. Simply evacuate the old R-22 and charge with R-422B. Replacing the filter drier is good practice whenever the system is opened.
Does R-422B work in chillers?
Yes, in non-flooded evaporator chillers. Check with the chiller manufacturer for flooded evaporator designs.
Should I convert or replace my R-22 system?
If the equipment is in good shape, converting to R-422B can extend its life. If it needs major repairs, Budget Heating's quote team can help price a replacement.
