Ducted and central recharge
AC refrigerant charging in Al Nuzlah Al Yamaniyah
In Al Nuzlah Al Yamaniyah in south Jeddah, homes and residential blocks need precise refrigerant charging when the central AC cools some rooms but leaves others warm. Alrabih's team measures pressure and temperature first, checks for leaks, then vacuums and charges to the refrigerant type on 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.
Split AC installation
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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
Most residential blocks in Al Nuzlah Al Yamaniyah are mid-rise with central AC units serving several floors, and flats higher up or further from the outdoor unit often report poor cooling. The issue is rarely low refrigerant but rather uneven airflow distribution or small leaks in the long copper pipes running between floors. Refrigerant charging must be preceded by careful pressure and temperature readings, and any leak must be repaired before recharging.
Al Nuzlah Al Yamaniyah lies in south Jeddah, an area of mid-rise residential blocks with wide streets and reasonable outdoor space for the external units.
Most central units here serve buildings of three to six storeys, with outdoor units typically placed on the roof or in open outdoor space.
The AC setup in Al Nuzlah Al Yamaniyah
- 1
Central AC serving several storeys
Most buildings here have one outdoor unit serving three to six storeys, with long copper pipes distributed vertically.
- 2
Outdoor unit on roof or courtyard
Outdoor units are typically placed on roofs or in open courtyards because space is available in Al Nuzlah Al Yamaniyah.
- 3
High-pressure system in summer
South Jeddah's intense heat raises system pressure in summer, making pressure and temperature readings sensitive and demanding precision during charging.
Before the visit
Before our visit in Al Nuzlah Al Yamaniyah
- 1
Ensure team access to the roof or courtyard
If the outdoor unit is on the roof, confirm there is a safe route for the team to reach it with equipment before the visit.
- 2
Switch off the unit half an hour before the team
For accurate readings, it is best to switch the unit off half an hour before the team arrives so pressures and temperatures settle slightly.
- 3
Tell the building not to use AC during charging
In a multi-flat building, ask neighbors not to run the unit during charging so the team can take accurate readings.
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 far bedroom does not cool like the front one, is this low refrigerant?
Not necessarily. It could be a small leak or uneven airflow distribution. We measure pressure and temperature first to establish the real condition before any charging.
Are leaks common in the long copper pipes between floors in buildings like ours?
Small leaks in joints or long pipes are possible, especially in older buildings. We inspect all connections and pipes before charging, and leak repair comes before recharging.
South Jeddah gets very hot in summer, does this affect how much refrigerant is needed?
High heat raises system pressure, but the correct refrigerant charge is set by the pressure and temperature readings on the unit itself, not outdoor temperature alone.
The outdoor unit is on the roof, does it need clear space around it during charging?
Yes, we need safe access to the charging ports and gauges without obstruction, and clear space around the unit to disperse pressure during charging.
