Engineering data for HVAC sizing, efficiency & troubleshooting
AboutContact
HVAC SolverTechnical Reference
CalculatorsTroubleshootingEfficiencyInstallation
  1. Home
  2. /
  3. Refrigerants

Refrigerants

PT charts, refrigerant types, and technical data

4 articles

Calculators

Refrigerant Pressure-Temperature Charts

Interactive pressure-temperature charts for R-410A, R-22, R-32, R-454B, R-134a, and 3 more refrigerants. Lookup saturation pressures with NIST REFPROP data.

Guides & References

How Much Refrigerant In AC Units By Tonnage

Getting a refrigerant bill from your HVAC technician can feel like a gut punch — especially when you have no idea whether the amount they're.

Refrigerant Types, Properties, and GWP Chart

R-22, R-410A, R-32, R-454B compared: GWP, phase-out timelines, system compatibility, and what refrigerant your HVAC system uses or will need next.

Superheat and Subcooling

If you can answer that in your head, you're ahead of most techs on the truck. If you can't, this guide will get you there.

HVAC Solver

Free technical resources for HVAC system sizing, efficiency analysis, and troubleshooting. All calculators and reference data are based on ASHRAE standards, DOE methodology, and EPA guidelines.

Calculators

  • AC Tonnage Calculator
  • Heating BTU Calculator
  • CFM Calculator
  • Generator Sizing
  • Water Heater Sizing

Reference Guides

  • SEER Rating Guide
  • Thermostat Wiring
  • Refrigerant PT Charts
  • R-Value Chart
  • MERV Rating Chart

Topics

  • All Calculators
  • Troubleshooting
  • Efficiency Guides
  • Installation Guides
  • Energy Costs
  • Refrigerants
  • Indoor Climate
  • Water Heaters

Information

  • About
  • Contact
  • Privacy Policy
  • Terms of Use

General Inquiries

info@hvacsolver.com

© 2026 HVAC Solver. All rights reserved.

Calculator results are estimates for educational purposes. Consult a licensed HVAC professional for system sizing.