Find the leak first
Refrigerant charging in Al Rehab
In Al Rehab, central Jeddah, modern residential complexes and tall blocks rely on powerful central AC systems with long runs. Refrigerant charging here requires careful leak inspection of complex circuits, then repair and correct filling to ensure resident comfort.
- Leak located
- Vacuum and test
- Accurate charge
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
Signs the charge is low
- 1
Weak cooling and a compressor that runs on
The unit runs for hours without bringing the temperature down, or cools very slowly. This is usually the first sign the charge is low and the circuit can no longer move heat efficiently.
- 2
Frost on the pipes or evaporator coil
Ice on the thin pipe or on the evaporator coil points to low refrigerant pressure. Continued running can damage the coil. Where the frost forms helps the technician narrow down the problem area.
- 3
A refrigerator or cold room that will not hold temperature
In commercial or industrial refrigeration equipment, a rising cabinet temperature means stock at risk. Low refrigerant is one possible cause, and confirming it needs pressure readings and a circuit check on site.
Who it's for
Your window or portable unit cools slowly
We check circuit pressure, locate and repair the leak, then vacuum and charge to the type shown on your unit's nameplate.
Ask on WhatsAppYour cold room or commercial fridge will not hold temperature
We measure pressure, identify why the cabinet temperature is rising, repair any leak found, then charge to the correct refrigerant type for that unit.
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What the work covers
- Pressure check and leak location
- Leak repair before charging
- Vacuum and tightness test
- Charge to nameplate refrigerant
- Run test and performance check
How we work
How we work
- 1
Inspect and locate leak
The technician measures circuit pressure and checks joints and components that corrode in Jeddah's humid, salty air, pinpointing the leak before any other step.
- 2
Repair the leak
The technician repairs the leak point, whether a loose joint, a cracked pipe or corrosion in part of the circuit. The unit is not charged until the repair is confirmed tight.
- 3
Vacuum and pressure test
The circuit is evacuated with a vacuum pump to remove air and moisture, then the reading is watched to confirm pressure holds before refrigerant is introduced.
- 4
Charge and run
The unit is charged to the nameplate type and amount, then run and checked for proper performance on site before handover.
Fix the leak or just top it up?
| Alrabih | The usual way | |
|---|---|---|
| The leak | Found and fixed first | Often ignored |
| Vacuum | Before every charge | Sometimes skipped |
| Refrigerant type | As the nameplate states | May be mixed or swapped |
| Compressor | Protected by correct charge | Worn by wrong charge |
| Refrigeration equipment | AC, fridges and cold rooms | Usually AC only |
Everything your AC needs, from one team
From system design and duct fabrication to installation, commissioning and maintenance.
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Some of our work
Ductwork, rooftop units and diffusers, from work we've completed in Jeddah.
Customer reviews
What our customers say
- Muhammadramzan 2641
“MashaaAllah. Services are so good. Behaviour and kindness 100/100. Prices are less then Market. Fully recommended”
- shahzeb armani
“Wow. Prices are so comfortable. Outstanding services. People are so talented and nice”
- Tawfik AlyawerLocal Guide
“U can find all u need for air conditioning”
Your satisfaction matters to us! If you had a great experience with us, we'd love a 5-star rating and a kind review.
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We come to you anywhere in Jeddah
From Al Shiraa and Al Yaqout in the north to Al Thaghr and Al Quraiyat in the south, with our base in Al Aziziyah.
What sets this district apart
Al Rehab is a modern central Jeddah area of tall residential blocks and contemporary flats, many built to modern standards with powerful central AC systems covering multiple storeys. These complex systems have very long runs from indoor to outdoor units, routed through walls and across roofs. Leaks here may be hidden inside walls or under surfaces, making inspection harder. Intense summer heat and system size place high pressure on the circuit, so any leak causes rapid refrigerant loss.
Al Rehab sits in central Jeddah, a modern residential area of tall blocks and contemporary flats.
Most Al Rehab blocks have one or more central AC systems covering multiple storeys, with copper piping concealed inside walls.
The AC setup in Al Rehab
- 1
Central system covering an entire building
Most residential blocks in Al Rehab have a single powerful central compressor distributing cool air across multiple storeys through ducts inside the walls.
- 2
Independent systems per wing or zone
Some larger blocks have multiple central systems, each serving a section of the building to balance load and pressure.
- 3
Long concealed piping routes
Copper lines extend long distances from the roof to indoor units through concealed walls and roofs, making inspection difficult.
Before the visit
Before our visit in Al Rehab
- 1
Tell us where the outdoor and indoor units are
Specify the outdoor unit's roof location and the main indoor unit, usually in a plant room, and tell us where any mechanical spaces are.
- 2
Provide building plans or diagrams
If you have diagrams of the piping routes or unit locations, this helps the team plan the inspection accurately.
- 3
Coordinate with building management for access
The plant room or roof may need building management permission, so confirm approval and access keys before the visit.
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FAQ
Questions about Refrigerant charging
Can you just add refrigerant without looking for the leak?
A sealed refrigerant circuit does not consume refrigerant. A low charge means there is a leak somewhere. Adding refrigerant without finding and repairing that leak brings the same fault back quickly and can damage the compressor. The correct sequence is always to locate the leak, repair it, pull a vacuum on the circuit, and then charge to the type and quantity shown on the unit's nameplate.
Where does refrigerant leak in commercial refrigeration equipment?
The most common points are expansion fittings and restrictions on the liquid line, flare joints at the evaporator and condenser, and service valves where the rubber seals have aged. In commercial refrigeration, old copper pipe welds weakened by continuous compressor vibration are also a frequent source. The exact location is found during the site inspection.
Does the refrigerant type affect how the unit performs?
Yes. Every unit is designed for a specific refrigerant type with defined operating pressures and heat transfer properties. Using a different type changes those pressures and can either overload the compressor or reduce cooling output. For this reason the unit is always charged with the exact type shown on its nameplate and no substitute is used.
Is the charging work different for a home AC unit and a commercial refrigerator?
Yes, they differ in several ways. Commercial refrigeration units operate at pressures and with refrigerant types distinct from those in air conditioners, and their target temperatures are much lower. The pipe circuits are also longer and often include multiple distributors and valves that require careful inspection before vacuuming and charging. The nature of each circuit determines the procedure.
Is the charging work different for a home AC unit and a commercial refrigerator?
The core steps are the same: locate the leak, repair it, vacuum the circuit, then charge to the nameplate type. Commercial refrigeration units sometimes have additional valves and components that require a different inspection approach. What each unit needs is determined by the technician on site after pressure readings and a circuit check.
The central system is slow to cool, is it refrigerant leak?
It could be a leak or another fault. We check pressure and airflow first, then pinpoint any leak with advanced tools.
The pipes are hidden in walls, how do you find leaks without breaking walls?
We use highly sensitive electronic detectors that work from outside the walls, and if needed we disconnect the indoor unit to trace the pipe start.
Does the large system's summer pressure speed up refrigerant loss?
Yes, intense heat and high pressure in large systems accelerate refrigerant loss if a leak exists.
After refrigerant charge, how long until the system stabilises?
Refrigerant stabilises immediately after correct charging. However, we leave the system off for a few hours so pressure equalises throughout the entire circuit before operation.
