Charging refrigerant in Abha is technically different from charging it in Jazan — altitude affects refrigerant system pressures. Standard pressure gauges give correct values at sea level, but in Abha we need additional adjustment to guarantee the correct charge amount.
Why Gas Charging Differs in Abha
The technical principle: operating pressure is linked to ambient air density. At 2,200m, atmospheric pressure is approximately 23% lower than at sea level. This shifts the normal operating pressure values for the refrigerant circuit. A technician charging gas in Abha using sea-level values overcharges the system, which stresses the compressor long-term.
Signs of Low Refrigerant
- Weaker cooling than usual — especially at peak heat
- Indoor coil occasionally freezing
- Room taking much longer than normal to reach set temperature
- Outdoor unit running hotter than usual
- Faint hissing sound near the outdoor unit
Frequently Asked Questions
How often does an AC need a gas refill?
A sound refrigerant system never needs routine refilling. If your gas level drops every season, there is a leak that needs repairing.
Can different refrigerant types be mixed?
Never. Mixing refrigerant types destroys the compressor and voids the manufacturer warranty. Old gas must be fully recovered before charging a different type.
What does a gas refill cost?
SAR 150–350 depending on type and quantity. R22 is more expensive than R410A due to scarcity.