Ducted and central recharge
AC refrigerant charging in Al Waziriyah
In Al Waziriyah, south Jeddah, modern villas and residential towers rely on advanced central AC, and uneven room cooling may not mean refrigerant loss. Alrabih's team measures pressure and temperature, detects any leak, then charges with the correct refrigerant type.
- 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
Al Waziriyah is an upscale residential area of spacious villas and modern mid-rise towers, most with advanced central AC systems and powerful outdoor units on roofs or side spaces. The newer buildings here use insulated copper tubing and advanced thermostats, so measuring pressure and temperature at multiple points is vital to tell whether the problem is refrigerant loss or faulty valves and temperature sensors.
Al Waziriyah is in Jeddah's upscale south, a district of spacious villas and modern towers with advanced central AC.
Most central units here have digital thermostats and advanced zone control, requiring precise pressure and temperature readings rather than guesswork.
The AC setup in Al Waziriyah
- 1
Central AC with zone control
Modern villas and towers in Al Waziriyah usually have advanced zone control that distributes refrigerant to different areas, requiring each zone to be checked separately.
- 2
Powerful outdoor units on high roofs
Most modern buildings here have advanced outdoor units on high roofs or safe side spaces, making access and maintenance straightforward.
- 3
High-grade insulated copper tubing
Tubing here is high-quality insulated to keep refrigerant temperature stable, improving measurement and charging accuracy.
Before the visit
Before our visit in Al Waziriyah
- 1
Ensure safe access to the roof or side space
Verify the ladder and passage to the outdoor unit is safe and clear, so the team can climb with measuring tools comfortably.
- 2
Run the system for a full hour before we arrive
Ask the owner to run the central AC on cool for a full hour before we arrive, so all pressure and temperature readings stabilise.
- 3
Coordinate with building management if it's a tower
If the unit is in a residential tower, contact management beforehand to ensure the team can reach the roof on time.
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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 modern tower has zone control, but some flats cool less, is it the refrigerant?
The zone control itself may need recalibration, or distribution pipes may be uneven. We measure pressure and temperature in each zone separately to find the real cause.
The outdoor unit is in a narrow side space, can you reach it?
Yes, Al Waziriyah usually has enough side space for equipment. Clear any obstacles and provide a safe ladder to reach the unit.
High summer humidity affects my central AC's pressure readings, how do you handle that?
Jeddah's high summer humidity affects refrigerant stability, so we take readings at set times and ask for the system to run well before the visit.
My tower's copper tubing is high-grade insulated, does that affect charging?
Good insulation keeps refrigerant temperature stable, which makes measuring and precise charging easier. We calibrate based on the refrigerant type on the unit's nameplate.
