Split AC refrigerant charging in Petromin

Usually not. Charging is done at the service valve on the outdoor unit, and if the leak is at the flare joints behind the indoor unit we reach them by lifting the lower cover or tilting the unit on its bracket. It only comes down when the joint is inside the wall.

The most common points in a wall split are the flare joints at the indoor unit, which loosen over time from vibration, and the service valves at the outdoor unit. In Jeddah's humid and salty air, oxidation at copper connections can develop faster, which raises the chance of a leak.

When a split is moved, the flare joints are disconnected and remade, and this is when air and moisture enter the line. A full vacuum before charging becomes especially important, and the technician checks every remade flare joint before the line is closed.

This is a common sign of low refrigerant. At night, lower outdoor air temperature lets the compressor partly compensate for the shortage. During Jeddah's daytime heat, the reduced charge is not enough and cooling weakens or stops. The inspection confirms whether this is the cause or whether another factor such as the compressor or capacitor is involved.

Yes, a longer copper pipe run between the two units requires more refrigerant. The site inspection measures the actual run length, and the technician sets the charge amount based on the nameplate figure and the installed pipe length.

If your unit cools well at first then weakens after a few weeks, that signals a leak. Our team uses a gas detector to locate the leak before we repair it.

Yes, longer lines have more copper fittings, and each one is a potential leak point, especially under Petromin's intense summer heat.

Yes, salt spray accelerates copper corrosion and fitting degradation, raising leak risk. Regular cleaning of the outdoor unit slows this process.

We fully vacuum the line with a pump, then fill it to the exact type and amount shown on the nameplate, not a rough estimate.