Ducted and central recharge
AC refrigerant charging in Al Masarrah
In Al Masarrah, south Jeddah, central and split systems in villas and apartment blocks need careful pressure and temperature checks before refrigerant charging. Alrabih's team measures performance, searches for leaks, then evacuates and charges with the correct type from the unit's nameplate.
- Accurate pressure readings
- Charge recovery
- Nameplate-type charge
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
When your system needs a refrigerant charge
- 1
Uneven cooling across zones
One office or floor feels hot while the rest of the building is cool. Before adding any refrigerant, the technician reads pressures and temperatures at several points to confirm that a low charge is actually the cause.
- 2
After a repair or component swap
Replacing a compressor, a valve or any part that opens the circuit means the old charge escapes. It must be recovered with a dedicated machine, then the line is vacuumed and recharged after the repair is done.
- 3
A system restarted after long shutdown
A central or rooftop unit shut down for a full season in Jeddah's salty coastal air may have lost part of its charge. We verify with pressure readings before adding anything, and look for a leak if the readings point to one.
Who it's for
Your villa's ducted system has lost its cooling
We read system pressures and line temperatures, find any leak in the long pipe runs, then vacuum and charge to the refrigerant type on the unit nameplate.
Ask on WhatsAppYour building's rooftop unit cools unevenly across floors
We inspect the system and its drawings, measure pressures and temperatures at multiple points to find the cause, then recover the old charge if a repair is needed and recharge to the nameplate type only.
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What the charging work covers
- Suction and discharge pressure readings
- Liquid and suction line temperatures
- Old refrigerant charge recovery
- Line vacuum before recharging
- Charge to nameplate refrigerant type
How we work
How we work
- 1
System check and readings
The technician checks the unit nameplate and system drawings, then reads suction and discharge pressures and line temperatures to judge the actual charge condition.
- 2
Find and fix the leak
If readings show a low charge, the technician finds the leak in the long line set, joints or components, and repairs it before any refrigerant is added.
- 3
Recovery and vacuum
The remaining old charge is recovered with a dedicated recovery machine, then a vacuum pump removes all air and moisture from the line before the new charge goes in.
- 4
Charge and verify
The system is charged with the refrigerant type on the nameplate only, never mixed with another type, then pressures are read again and cooling is checked across all zones.
Careful charge or a random top-up?
| Alrabih | The usual way | |
|---|---|---|
| Diagnosing the cause | Pressures and temperatures first | Add refrigerant straight away |
| The leak | Found and fixed before charging | Left to repeat the problem |
| Old charge | Recovered by machine | Vented to atmosphere |
| Refrigerant type | Nameplate type, no mixing | Whatever is to hand |
| Long line sets | Joints checked along the full run | Checked at the unit 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.
Worked with us? Leave a reviewService areas
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 Masarrah is an advanced residential area mixing modern villas with mid-rise apartment blocks, mostly recently built with sophisticated central or split systems. Copper pipes between outdoor and indoor units can leak due to solder joint quality or long-term compressor vibration, and tight spacing between buildings sometimes makes outdoor unit servicing difficult. Thorough pre-charge checking protects the system from future damage and failure.
Al Masarrah lies in south Jeddah, a district of modern villas and mid-rise residential buildings with contemporary systems.
Most villas and apartment buildings in Al Masarrah have long copper pipes fed by a single outdoor compressor unit serving multiple indoor heads.
The AC setup in Al Masarrah
- 1
Central system with outdoor compressor unit
Most villas in Al Masarrah are fitted with a central system comprising a single outdoor compressor and internal distribution ducts.
- 2
Multi-head split in apartment blocks
Apartment buildings rely on a single outdoor compressor distributed to multiple flats via several indoor heads.
- 3
Copper pipes between levels
Copper pipes often run across multiple levels, raising leak risk at solder joints, especially in relatively older systems.
Before the visit
Before our visit in Al Masarrah
- 1
Specify the outdoor unit location and outlet count
Before the visit, tell us the outdoor compressor location and number of indoor outlets so we can prepare complete readings.
- 2
Ensure safe access to the unit
Check that the outdoor unit is safely and easily reachable for readings and diagnosis, especially if it is on the roof or in a tight space.
- 3
Do not adjust the thermostat before our visit
Leave the system as normal before our check, as adjusting settings affects pressure and temperature readings.
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FAQ
Questions about AC refrigerant charging
Why can't a second refrigerant type be mixed into a ducted system?
Every refrigerant type is matched to a specific compressor, lubricating oil and operating pressures. Mixing two types shifts the pressures and contaminates the oil, straining the compressor and ruining cooling performance. We read the nameplate type and use only that.
Can a rooftop unit be recharged without shutting the whole building down?
In most cases one rooftop unit can be worked on while the others keep running, but this depends on how the system is designed and how many units it has. The technician reviews the system drawings at the survey and decides the approach that causes least disruption.
What do pressure and temperature readings tell you about a central AC system?
Suction pressure and gas line temperature show how well the evaporator coil is absorbing heat, while discharge pressure and liquid line temperature reveal condenser performance. Comparing both sets against the manufacturer's values shows whether the charge is low, high or whether another component is the real problem.
Why is the old charge recovered rather than just released?
Releasing refrigerant to the air damages the ozone layer and is prohibited. Recovery keeps the gas for proper recycling or disposal. In large systems the charge is substantial, so recovery both protects the environment and avoids losing a costly material before the repair is complete.
How does charging a ducted system differ from charging a standard split unit?
A ducted system has much longer refrigerant line sets and a larger charge, so a shortage takes longer to appear and leak-finding covers a much greater length of pipe and joints. Pressure readings must also be compared against the manufacturer's values for the whole system, not just a single indoor unit.
My villa AC cools weakly and I hear a strange noise from the compressor, is it a refrigerant leak?
It could be a leak or another compressor issue. We measure pressure and temperature and detect any leak electronically before any work.
The solder joints on copper pipes look old, do they cause leaks?
Yes, weak or aged solder joints can leak over time, especially with compressor vibration. We check them and repair any leaks before evacuation and charge.
Villas and buildings here are close together, is it hard to reach the outdoor unit?
Sometimes, but our team is trained to navigate tight spaces and roofs. We ensure safe access by coordinating with you before the visit.
What is the correct amount of refrigerant for my system?
The amount is written on the data plate on the outdoor unit, and we charge to that figure precisely. Each system has a different amount based on capacity and pipe length.
