Replacement Guide

Choice R-420A

Replaces R-12 in Multiple Stationary Applications

Save Time and Save Money with a Quick and Easy Conversion to Choice R-420A.


  • an EPA accepted replacement for R-12 and R-500.*
  • ..can be used to replace R-134a.
  • ASHRAE designated R-420A.
  • ..operates at almost identical pressure-temperature relationships as R-12.
  • ..contains no propane, butane, or isobutane.
  • Non-Flammable and rated A1.
  • ..has an extremely low temperature glide (averages 2° F).
  • ..has almost zero fractionation.
  • ..can be topped off following repair of a system leak.
  • compatible with all materials commonly found in HVAC/R systems.
  • ..contains no R-22.
  • ..can contribute to energy savings.
  • ..can be recovered with standard recovery equipment.
  • ..can be detected by standard leak detectors.
  • backed by a product warranty.
  • currently in use in a wide variety of applications including:
    • Chillers
    • Ice Machines
    • Walk-In Coolers
    • Reach-In Coolers
    • Plate Chillers
    • Vending Machines
    • Bus Air Conditioning
    • And More..

* R-420A is packaged with a performance enhancing lubricant.

Comparison Chart

HotShot™ FR-12™
Contains Butane R-600 or Isobutane R-600a? NO YES: Isobutane R-600a YES: Butane R-600
Contains R-22? NO YES NO
Oil Change Required? NO NO ** SEE BELOW
Temperature Glide (°F) 2.5 14 4
ASHRAE Safety Classified A1? YES YES YES
Packaged with a Performance Enhancing Lubricant? YES NO NO

*Contact the manufacturer to determine what level of fractionation will occur. Systems containing R-420A can be added to an unlimited number of times.

**FR-12™ requires an oil change in any of the following circumstances:

  1. If the evaporator temperature is below 20 degrees F.
  2. If the refrigerant lines are longer than 20 feet.
  3. If any components such as the receiver/filter drier, condenser etc. are to be replaced.
  4. If the system has a history of poor oil return.

Source of information is from Manufacturer’s Literature.