Car AC Refrigerant Recharge in Riyadh: Vacuum Dehydration & OEM Gram-Scale Charging

Our climate technicians test the voltage output of AC pressure transducers (G65 sensors) using digital multimeters, ensuring accurate high-side pressure reporting to the engine control unit.

This prevents premature compressor cutoff and safeguards the magnetic clutch against thermal overload during extreme ambient temperatures exceeding 45°C in Riyadh.

Our fully automated charging stations recover spent refrigerant, separating degraded compressor lubricant and filtering out moisture before pulling a deep 29.9 inHg vacuum for 20 continuous minutes.

This deep vacuum dehydrates moisture from the AC lines before charging virgin R134a weighed to the exact gram and injecting calibrated synthetic PAG oil to protect internal compressor pistons.

The majority of vehicles produced up to 2020 utilize R134a (1,1,1,2-Tetrafluoroethane) refrigerant, known for its exceptional thermodynamic capacity and stable operating pressures in Gulf summer heat. In contrast, newer American and European models increasingly utilize eco-friendly R1234yf refrigerant featuring an ultra-low Global Warming Potential (GWP < 1).

A catastrophic error committed by budget workshops is cross-contaminating refrigerants or charging R134a into R1234yf systems without matching specialized synthetic lubricants. R134a requires polyalkylene glycol (PAG 46 / PAG 100) oils, while R1234yf systems and electric/hybrid compressors require specific POE or double-end-capped PAG formulas.

At Faris Al Arab Center 2, we operate dedicated, fully isolated automated recovery and recharging stations for each refrigerant type, analyzing gas purity before injection to guarantee ultimate cooling performance and compressor longevity.

Charging refrigerant without pulling a deep vacuum is the primary cause of AC compressor failure in Riyadh. Atmospheric moisture trapped inside lines combines with refrigerant and lubricant under heat and pressure to form corrosive hydrofluoric acid, which eats through internal compressor valves and causes expansion valves to freeze up with rust.

We mandate a two-stage vacuum cycle lasting at least 15 to 20 minutes to achieve deep vacuum levels exceeding 29.9 inHg, boiling off and evacuating all moisture molecules before charging pure virgin refrigerant.

Some budget workshops use counterfeit refrigerant cylinders mixed with cheap industrial hydrocarbons (propane or butane) or recycled gas containing high moisture. These counterfeit gases cause compressor seizure, poor cooling in Riyadh's summer, and severe fire hazards.

At Faris Al Arab Center 2, we exclusively dispense genuine, factory-sealed cylinders from world-class chemical manufacturers (DuPont / Chemours / Honeywell) and test refrigerant purity prior to charging your vehicle.

If your AC has lost its charge completely, an active leak exists. Recharging gas into a leaking system without fixing the source is a waste of money, as the fresh charge will escape again within days.

We always inform our customers of nitrogen pressure test results: if a leak is present, we locate and repair the seal, hose, or condenser first, ensuring your new recharge lasts for years.