Ducted and central recharge
AC refrigerant charging in Al Karamah
In Al Karamah south of Jeddah, central and split systems in villas and apartment blocks need careful pressure and temperature checks before refrigerant charging. We measure to pinpoint whether a leak or simple charging is the answer.
- 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.
Ask on WhatsApp
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 Karamah is a mixed residential district of villas, mid-rise and flat buildings, some modern and some older. Systems vary between independent splits and distributed central runs, and the intense southern heat and humidity increase refrigerant consumption and stress on copper pipes, especially in older systems.
Al Karamah lies in southern Jeddah, a mixed residential district of villas, mid-rise and apartment blocks.
Most systems here are independent splits for villas and flats, with some blocks having distributed central runs across multiple units.
The AC setup in Al Karamah
- 1
Independent splits in villas and flats
Most modern villas and flats in Al Karamah have independent splits per unit.
- 2
Distributed central systems in mid-rise blocks
Mid-rise blocks typically use one central system distributed across several flats or floors.
- 3
Long copper runs in larger villas
Larger villas may have long copper distances from the outdoor unit through distant rooms, raising leak risk.
Before the visit
Before our visit in Al Karamah
- 1
Have system diagrams or the operation manual
If you have system diagrams or the operation manual, this helps us understand the layout and original capacity faster.
- 2
Notify building management if the system is shared
If the system is shared across multiple flats, notify management about the check time to coordinate with others.
- 3
Ensure the team can access all units and ducts
Ensure the team can safely reach the outdoor unit on the roof or wall and any indoor units or ducts.
More districts for AC refrigerant charging
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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 has an older central system, how do I tell if it needs charging or pipe repair?
We measure pressure and temperature at different points; if pressure is normal but cooling is weak, it's a different issue; if pressure drops, there is a leak we repair before charging.
How many annual refrigerant charges do you recommend in the south?
If the system is sound with no leaks, routine charging is not needed, but six-monthly or annual checks identify any slow leak.
Heat and humidity stress the pipes, what's the expected lifespan of copper tubes?
This depends on installation quality and maintenance, but good pipes last many years; regular checks detect leaks before complete failure.
Should I repair or replace the pipes, which is cheaper?
Simple repair of a small leak is cheaper, but if leaks are large or recurring, replacement is less trouble long-term; send a photo on WhatsApp so we can advise.
