Ducted and central recharge
AC refrigerant charging in Sulaitah
In Sulaitah, east Jeddah, ducted AC systems that cool some zones but leave others warm need careful pressure and temperature readings first. Alrabih's team reads these values, repairs any leak found, 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.
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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
Sulaitah is a relatively modern residential district with mid-rise blocks and larger housing projects set across wide, open plots between buildings. Most homes and large apartment blocks run ducted central AC through complex ductwork to distribute cooling across multiple rooms and halls, and when temperatures vary between zones, the cause may be duct leaks, refrigerant loss or poor air balancing across the vents.
Sulaitah lies in north-east Jeddah, a modern residential district with apartment blocks and villas spread across open space.
Most central systems in Sulaitah need refrigerant charging when a duct leak is found or when overall system pressure drops.
The AC setup in Sulaitah
- 1
Central system with ducts distributed across multiple floors
Most large apartment blocks in Sulaitah have a single central unit with ducts feeding multiple separate flats or wings in the same building.
- 2
Central split systems in some villas
Some larger villas in Sulaitah use a central split system combining one outdoor unit with internal distribution ducts.
- 3
Outdoor units in safe areas away from foot traffic
Outdoor units in Sulaitah are usually placed on roofs or spacious rear courtyards, making them accessible and safe to work around.
Before the visit
Before our visit in Sulaitah
- 1
Tell us the duct layout and which zones are affected
Before the visit, describe the zones and rooms and which ones cool poorly, so we can prepare the right tools and plan the inspection.
- 2
Ensure the outdoor unit is safely accessible
Make sure the outdoor unit on the roof or in the yard is safe to work around, and that the team can access it safely on the visit day.
- 3
Prepare any current pressure readings if available
If you have previous refrigerant pressure readings from another technician, bring them to help us compare and diagnose more accurately.
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.
Rooms far from the outdoor unit do not cool properly, is this a refrigerant leak?
It could be a leak or loss of air through the ducts or poor air balancing across the vents. We check pressure and temperature first to find the real cause before any charging.
My home is large with complex ductwork, how do you find the leak?
We use pressure and temperature gauges at different points in the system, and if needed, gas detection tools to pinpoint leaks in the ducts or joints.
Summer heat and humidity in Sulaitah are very high, does this affect the refrigerant amount needed?
High summer heat and humidity increase system pressure and load, but the correct charge is set to the unit's specifications, not to seasonal weather.
The outdoor unit is far from some rooms, does it need more refrigerant?
No, refrigerant circulates in a closed loop. Distance may mean more heat loss in long ducts, which is solved by insulating the ducts or balancing air across vents, not by adding refrigerant.
