R290, better known as propane, is rapidly gaining ground in the heat pump world. With a GWP of just 3 and excellent thermodynamic properties, it’s a genuinely future-proof refrigerant — but it demands respect.
Why R290 is popular
- Ultra-low GWP (~3) — unaffected by the F-Gas phase-down
- High efficiency — excellent heat transfer properties
- High flow temperatures — can reach 70°C+, ideal for retrofitting homes with existing radiators
The flammability factor
R290 is an A3 (higher flammability) refrigerant, so it’s treated with care. Manufacturers design R290 units with strict charge limits, sealed circuits and safety features. Engineers need appropriate training and must follow safe-handling procedures, keeping ignition sources away during service.
Servicing R290 systems
Use the correct A3-rated equipment, ensure good ventilation, and follow the manufacturer’s procedures precisely. Recovery and charging must be done by competent, certified personnel.
FAQ
Are R290 heat pumps safe? Yes — they’re designed with safety in mind and the charge is carefully limited. Like all refrigerants, safe handling during installation and service is essential.
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