Ducted and central recharge
AC refrigerant charging in Al Surur
In Al Surur, south Jeddah, mixed commercial and residential buildings with central AC need advanced checking before refrigerant work. We measure pressure and temperature precisely to determine whether cooling loss is from a leak or poor distribution between different uses.
- 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.
Split AC installation
Request this serviceDuct installation
Request this serviceCentral AC installation
Request this serviceDuct fabrication
Request this serviceCold room installation
Request this serviceElectro-mechanical works
Request this serviceChiller & AHU installation
Request this serviceHVAC design
Request this serviceAC repair & faults
Request this serviceAC cleaning
Request this serviceRefrigerant charging
Request this serviceCentral AC maintenance
Request this serviceChiller maintenance
Request this serviceAC removal & refitting
Request this serviceDuct cleaning & sanitising
Request this serviceAC servicing by brand
Request this serviceOperation & maintenance contracts
Request this serviceAHU maintenance
Request this serviceFridge & freezer service
Request this serviceCold rooms
Request this serviceDisplay fridges & chillers
Request this serviceFactory HVAC
Request this serviceWarehouse HVAC
Request this serviceVilla & home HVAC
Request this serviceHotel HVAC
Request this serviceSchool HVAC
Request this serviceHospital HVAC
Request this serviceMosque HVAC
Request this serviceMall & retail HVAC
Request this serviceRestaurant & cafe HVAC
Request this service
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 Surur is a mixed-use district combining ground-floor shops and upper-floor residential flats, with each building usually having one central AC unit serving both shops and flats. This mixed use creates uneven pressure on the unit, especially when shops run all day while flats are vacant part-time. Our check begins with precise pressure reading from the outdoor unit, then leak and blockage detection in distribution lines before charging.
Al Surur is in south Jeddah, a mixed-use district combining ground-floor shops and residential flats in the same blocks.
Most buildings here use one outdoor unit supplying AC to multiple shops and flats, usually placed on a shared rooftop or rear yard.
The AC setup in Al Surur
- 1
Single central AC serving shop and flat
One outdoor unit supplies cooled air to both the shop and flat via shared or separate distribution lines.
- 2
Pipes in hot walls near the external facade
Some pipes may run near external walls exposed to direct sunlight, affecting refrigerant temperature.
- 3
Separate indoor units for shop and flat
Shop and flat typically have separate indoor units, but both connect to the same main line from the roof.
Before the visit
Before our visit in Al Surur
- 1
Coordinate with both shop owner and flat occupant
Tell both the shop owner and flat occupant about the visit time, as we may need to read pressure on each section separately.
- 2
Tell us about access to the shared yard or roof
Let us know if the unit is on roof or rear yard, and ensure keys and stairway access are available.
- 3
Identify separate reference points for shop and flat
Pick one room in the shop and one in the flat for temperature measurement, as cooling may differ between them.
More districts for AC refrigerant charging
Other services in Al Surur
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.
The shops are cool but my flat is warm, is the refrigerant loss unevenly distributed?
Shops may get pressure priority because they run heavier loads all day. We measure pressure on shop and flat lines separately to find whether there is blockage in the flat line or general leakage.
The shop and flat share the same outdoor unit, how do you handle charging?
We measure the cooling load for each use and charge the unit to cover the total load. We may need to coordinate between shop and flat owners to rebalance.
The shop stays open in summer and the pipes run near hot external walls, does that affect charging?
Yes, pipes near hot external walls lose cooling in transit. We account for this when calculating the refrigerant needed for charging.
Should I charge the unit based on the shop load, the flat load, or both together?
We charge based on the total cooling load from both uses. We read pressure and temperature and correlate them to outdoor temperature to ensure the charge matches actual load.
