R-414B (HOTSHOT)* is a blend of R-22, R-124 and R-142b with hydrocarbon R-600a (isobutane) added to improve mineral oil miscibility. This blend can be used to retrofit R-12 automotive air conditioning systems as well as stationary refrigeration systems. The pressure and system capacity match R-12 in 40°F to 50°F evaporators, and the discharge pressure in hot condensers is only 5 to 10 psi higher than R-12 (a benefit in automotive AC and warmer refrigeration environments). The temperature glide runs about 13°F in the evaporator. The addition of isobutane to this blend significantly improves mineral oil compatibility, particularly for high viscosity oils used in auto AC. *Hotshot is a registered trademark of ICOR.

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Download SDS for R-414B.

Download the R-414B product information
from the NRI Refrigerant Reference Guide