Air conditioners typically use refrigerant gases to cool the air. The most common refrigerants used in modern AC systems are:
1. **R-410A** (Puron) – This is the most commonly used refrigerant in newer air conditioners. It's more efficient and environmentally friendly compared to older refrigerants.
2. **R-22** (Freon) – This was the standard refrigerant for many years but is being phased out due to its harmful effects on the ozone layer. It's still used in older AC units, but it's getting harder to find as production of R-22 has been banned in many countries.
3. **R-32** – This is becoming more common in newer systems because it has a lower environmental impact compared to R-410A, as it has a lower global warming potential (GWP).
4. **R-134A** – This is commonly used in car air conditioners, though it's less common for home AC units.
It's important to use the correct refrigerant for your system, as using the wrong type can cause damage or reduce efficiency. If you're unsure about which gas your AC uses, it's best to check the manufacturer's specifications or consult a professional technician.