Description
R‑290 (propane) is a natural refrigerant regaining popularity as a sustainable alternative to synthetic HFCs like R‑22, R‑404A, and R‑134a. With negligible environmental impact, it exhibits high efficiency in low- and medium-temp refrigeration systems
Key Features:
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Extremely low GWP (~3) and zero ozone depletion
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Excellent heat transfer and energy efficiency
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Widely available and cost-effective
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ASHRAE Class A3: highly flammable, requiring strict handling procedures
Specifications:
| Property | Value |
|---|---|
| Chemical Formula | C₃H₈ (Propane) |
| Molecular Weight | ~44.1 g/mol |
| Boiling Point | −42.1 °C |
| GWP | ~3 |
| ODP | 0 |
| Safety Class | A3 (highly flammable) |
| Packaging | Small refill cans, cylinders |
Applications:
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Vending machines, small display freezers
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Beverage coolers, refrigerated cabinets
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Domestic and light-commercial refrigeration appliances
Usage:
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Only use in specially designed systems rated for flammable refrigerants
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Limit charge size per regional safety standards
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Use spark-free tools and ensure good ventilation
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Routine leak inspections and recovery essential
FAQs:
Q1. Is propane refrigerant safe to use?
Yes, when handled in systems designed with safety standards for flammable substances.
Q2. Can R‑290 replace R‑22 or R‑404A?
Yes—only in new equipment designed for flammable refrigerants. Retrofit not recommended.
Q3. Why choose R‑290?
Its ultra-low GWP and high efficiency make it a sustainable, cost-effective alternative when safety protocols are followed.
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