Understand, Compare & Select Refrigerants
Explore refrigerant properties, applications, alternatives, replacement considerations, safety information and evolving low-GWP regulations for HVAC and refrigeration systems.
Explore popular refrigerants
Start with the refrigerants most commonly researched across air conditioning, heat pumps, refrigeration, automotive cooling and low-GWP transition projects.
Refrigerant research made easier
Whether you're evaluating a new system, replacing an existing refrigerant or comparing lower-GWP options, start with the pathway that matches your project.
Selecting for new equipment
Explore refrigerant options by application, refrigerant family and transition strategy.
Open Refrigerant FinderReplacing a legacy refrigerant
Review replacement pathways while understanding that alternatives are not automatically drop-in substitutes.
Explore Replacement GuidesComparing two alternatives
Compare refrigerant type, applications, safety considerations and transition context side by side.
Compare RefrigerantsLooking for a refrigerant replacement?
Replacement decisions depend on equipment design, application, safety classification, operating conditions and regional regulations—not simply refrigerant name or pressure.
A listed alternative should not be interpreted as a direct drop-in replacement. Always verify equipment and manufacturer requirements.
Compare refrigerants side by side
Start with frequently researched refrigerant comparisons for HVAC, heat pumps, refrigeration and automotive systems.
Compare two major lower-GWP refrigerant paths used in current HVAC equipment discussions.
View comparison TransitionUnderstand the major differences between a widely used legacy HVAC refrigerant and R32 systems.
View comparison Heat PumpsCompare two important refrigerant approaches for modern heat pump and cooling applications.
View comparisonExplore refrigerants by application
Refrigerant requirements vary significantly by system type. Start with the application rather than choosing a refrigerant in isolation.
Air Conditioning
Residential and commercial cooling applications.
Explore refrigerants →Heat Pumps
Refrigerant options for heating and cooling systems.
Explore refrigerants →Commercial Refrigeration
Retail, display, foodservice and commercial systems.
Explore refrigerants →Cold Storage
Warehousing, industrial and low-temperature systems.
Explore refrigerants →Automotive AC
Mobile air-conditioning refrigerant technologies.
Explore refrigerants →Chillers
Refrigerants for building and industrial chiller systems.
Explore refrigerants →Cooling technology is changing
The refrigerant landscape is shifting toward lower-GWP technologies, new refrigerant families, natural refrigerants and updated safety requirements. Refrigerants.net helps make that transition easier to understand.
A2L Refrigerants
Understand mildly flammable refrigerants and their role in newer HVAC/R systems.
Natural Refrigerants
Explore CO₂, hydrocarbons and ammonia across modern refrigeration and heat-pump applications.
Safety Classifications
Learn how refrigerant safety classifications affect design, installation and servicing considerations.
Leak Detection
Explore refrigerant leakage detection, sensing and system integration considerations.
Follow refrigerant policy by region
Refrigerant regulations are not uniform worldwide. Explore regional policies, transition timelines and refrigerant-related requirements by market.
Explore Global RegulationsPractical refrigerant tools
Use Refrigerants.net as more than a reference library. Our tools are designed to make refrigerant research, comparison and calculation faster.
Refrigerant Finder
Navigate refrigerant options by application and project requirements.
Open tool →Comparison Tool
Compare refrigerant characteristics and application considerations.
Open tool →GWP Calculator
Support refrigerant emissions and environmental impact calculations.
Open tool →Pressure-Temperature Charts
Access pressure-temperature reference resources for refrigerants.
View charts →Built for reliable refrigerant research
Refrigerants.net is designed as an independent technical information resource. Key refrigerant data and regulatory content should be verified against authoritative standards, government sources and technical documentation.
Working on a refrigerant or HVAC/R project?
Contact us for refrigerant sourcing inquiries, application discussions, supplier connections or refrigerant leak detection and sensing requirements.