Ducted and central recharge
AC refrigerant charging in Breiman
In Breiman, east Jeddah, centralised and ducted AC systems need precise refrigerant charging when some rooms cool poorly whilst others stay warm. Alrabih's team measures pressure and temperature, checks for leaks, then charges to spec.
- 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
Breiman is an expanding district of modern villas and flats, most fitted with centralised or ducted AC spreading across multiple rooms. When cooling weakens between one room and another, residents often assume refrigerant is low, but the cause is usually a blocked duct or a slow leak. Measuring pressure and temperature precisely at different points determines whether charging is actually needed.
Breiman sits in Jeddah's eastern sector, a modern residential development of villas, mid-rise blocks and open spaces.
Most modern residential buildings in Breiman rely on one or two central AC units feeding ducted branches across the floors.
The AC setup in Breiman
- 1
Single central unit on the roof
Most villas and flats in Breiman have one central AC unit on the roof feeding all rooms through insulated ducts.
- 2
Ducted system branching across floors
Ducts run vertically through walls from the rooftop unit to outlets in each room, requiring precise readings at multiple points.
- 3
Single thermostat in the main hallway
Most systems have only one thermostat, which may cause imbalance between distant and nearby rooms.
Before the visit
Before our visit in Breiman
- 1
Ensure team access to the roof
Confirm that the roof access door is open and safe, and there is adequate clearance around the central unit for measurements and work.
- 2
Locate the indoor ducts
Tell us where the main air outlets are located in your home or flat so we can measure temperature at different points.
- 3
Arrange access to the electrical panel
We may need to disconnect the unit's power during work, so ensure you know the location of the relevant breaker.
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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.
Some of my rooms are cold and others warm, does that mean low refrigerant?
Not necessarily. There may be blocked ducts or a small leak. We measure pressure and temperature first, and check the ducts before deciding if charging is needed.
The central unit sits on the roof, is it easily accessible?
In Breiman most roofs are safe and easily reached. We check that there is enough clearance around the unit before the visit for the team's comfort and accurate readings.
Peak summer heat seems to weaken cooling, is that normal?
Partly yes, but if weakness persists into evening hours, it may signal a leak or low charge worsening under high heat, which our pressure readings will reveal.
Can the copper pipes from the unit to the ducts leak refrigerant?
Yes, copper pipes can corrode or crack over time, especially if poorly insulated on the roof. We inspect the pipes for leak signs or damage before charging.
