ComStar®s RS-44B (R453A) is the newest R22 drop-in replacement refrigerant in the U.S. market. RS-44B has been sold worldwide for the past 8 years, branded as RS-70 outside the US. It is the closest replacement to R22 that operates with very similar discharge pressure, cooling capacity and flow rate as R22. It requires no oil or system component changes and has the lowest GWP of any HFC R22 replacement in the market at 1664 TAR. RS-44B is a PROVEN R-22 replacement now being manufactured in the United States. RS-44B (R453A) is an improved version of our very successful RS-44 (R424A).
ComStar® Refrigerant, 24 lb, Composition: 1, 1, 1, 2, 3, 3, 3 Heptafluoropropane (HFC-227), Pentafluoroethane (HFC-125), 1, 1, 1, 2-Tetrafluoroethane (HFC-134A), Difluoromethane (HFC-32), Butane (HC-R600), Isopentane (HC-R601A), Liquefied Gas, Ether, Slight, 0.3633 pcf Vapor Density, -42.4 deg F Boiling, 120.6 psia, 340.3 psia Vapor Pressure
| Boiling Point | -42.4 deg F |
| Composition | 1, 1, 1, 2, 3, 3, 3 Heptafluoropropane (HFC-227), Pentafluoroethane (HFC-125), 1, 1, 1, 2-Tetrafluoroethane (HFC-134A), Difluoromethane (HFC-32), Butane (HC-R600), Isopentane (HC-R601A) |
| Odor/Scent | Ether, Slight |
| Vapor Density | 0.3633 pcf |
| Vapor Pressure | 120.6 psia, 340.3 psia |
| Capacity | 24 lb |
| Form | Liquefied Gas |
- RS-44b has the same flow rate as R22
- RS-44b operates at a similar discharge pressure as R22 and lower pressure than R407A and C, R422B and D, R417a and R427A
- RS-44b has the benefit of lower energy consumption
- RS-44b operates at a near cooling capacity of R22 in both A/C and Refrigeration applications down to -20 deg F evap temp
- RS-44b is the lowest GWP HFC R22 replacement on the market at 1664 TAR and is zero ozone depleting
- RS-44b is good for cap tube and TXV systems, it has been operating in all types of systems with all types of compressors worldwide since 2013
- RS-44b is produced in Texas, the UK and Spain
- RS-44b requires no oil or system component changes
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