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P-T Calculator

This comprehensive Pressure/Temperature calculation tool provides several unique features designed to make the HVAC/R technician’s job easier.

Available for iOS and Android devices:


Need R-22?
We Have It in Stock!

R-22 has been phased out and as of Jan 1, 2020 can no longer be produced or imported. However, National Refrigerants has R-22 available for your present and future use.

View R-22

California Regulations

Guide to CA regulations on R-134a Cans

Learn More

Quality Matters
We Stand Behind Our Refrigerant

Low Quality Refrigerant can lead to:

  • Capacity Loss
  • Loss of Efficiency
  • Shortened Compressor Life

Work with NRI’s Refrigerant Experts

When you need someone you can trust with your refrigerant challenges, choose NRI for its variety of services, delivered by the country’s largest, most knowledgeable team.

NRI: Your Source for
Automotive AC Refrigerants

Keep your customers cool with
National R-134A and R-1234YF refrigerants.

Visit Our Automotive Page

NRI Is the Industry Leader
for Refrigerants

400 Locations


30 Refrigerant







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