Ducted and central recharge
AC refrigerant charging in Abhur Al Shamaliyah
In Abhur Al Shamaliyah, many residential buildings suffer uneven cooling across rooms in their central AC system. Proper refrigerant charging starts with pressure and temperature readings, not immediate top-up.
- 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
Abhur Al Shamaliyah is a relatively modern residential district with mid-rise apartment buildings and detached villas, most equipped with central AC or multiple split units. Coastal humidity and intense sun exposure on eastern and western facades increase system load, and slow refrigerant leaks can develop in the long pipe runs from the plant room. Accurate pressure and temperature diagnosis before charging is essential to tell whether the problem is a leak or a distribution imbalance.
Abhur Al Shamaliyah sits in Jeddah's northern coastal sector, a newer residential district of apartment blocks and detached villas with wide street layouts.
Most units here are central AC or multi-split systems due to villa and building sizes, with copper pipes running long distances from the plant room to rooms.
The AC setup in Abhur Al Shamaliyah
- 1
Central AC in residential apartment blocks
Most modern apartment blocks are equipped with one central system per building, and cooling imbalance across indoor units can occur due to long pipe lengths.
- 2
Multiple split units in detached villas
Detached villas typically have multiple split units spread across rooms, and each unit may need separate pressure testing.
- 3
Long copper pipe runs from plant to rooms
Pipes extend long distances from the plant room to each room, raising the risk of slow refrigerant leaks at joints.
Before the visit
Before our visit in Abhur Al Shamaliyah
- 1
Tell us which rooms are cold and which are warm
Keep notes on temperature in each room before our visit, as this helps us determine whether the issue is a leak or distribution problem.
- 2
Arrange access to the plant room or roof
If in an apartment building, arrange for our appointment with building management; if units are on the roof, confirm safe access beforehand.
- 3
Ensure the main AC is accessible before we arrive
Make sure the plant room or roof access is not locked, and do not run the AC for thirty minutes before we arrive so we get accurate readings.
More districts for AC refrigerant charging
Other services in Abhur Al Shamaliyah
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.
Two rooms in my villa are cold, the third warm, is my refrigerant low?
Not necessarily. The refrigerant may be sufficient but the airflow distribution between rooms is imbalanced, or there is a slow leak. We measure pressure and temperature first to pinpoint the issue accurately.
How do you access the plant room in northern apartment buildings?
Plant rooms in modern apartment buildings here are usually on the ground floor or roof, and we coordinate with building management before the visit to ensure safe and quick access.
The intense heat and humidity here, does that change how much refrigerant is needed?
Coastal heat and humidity increase system load, but the refrigerant amount is set by the unit's capacity and actual pressure and temperature readings, not the weather alone.
The refrigerant pipes are very long from the plant to distant rooms, does that affect charging?
Long pipe runs increase the risk of slow leaks and affect pressure readings. We check the copper pipes for leaks before final charging.
