Ducted and central recharge
AC refrigerant charging in Harat Al Yemen
In Harat Al Yemen, historic downtown Jeddah, older buildings have varied cooling systems and tight spaces. When cooling weakens on one floor, it may seem like low refrigerant, but precise pressure and temperature checks reveal leaks or blockages before any charge.
- 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
Harat Al Yemen in historic downtown contains mixed-age residential and commercial buildings, many very old with tight floor-to-floor and street spacing. AC systems here are mostly splits in flats and shops because central systems don't fit the narrow old structures. In such older tight systems, weak cooling may stem from dust-clogged filters, leaks at solder joints, or weak airflow from a motor fault. Pressure and temperature readings determine whether there is a genuine leak needing new charge or another issue.
Harat Al Yemen sits in historic downtown Jeddah, a tight old district of mixed residential and commercial blocks around popular markets.
Most systems are separate splits per flat or shop, and copper lines are relatively short because outdoor units sit very close to indoor ones due to tight space.
The AC setup in Harat Al Yemen
- 1
Separate split per flat or shop
Each flat or shop has its own unit because tight buildings cannot accommodate central ducts, and copper lines are very short.
- 2
Short copper lines but exposed to salt and humidity
Lines may be close to tight streets with salt spray and damp, increasing corrosion and slow leak risk.
- 3
Filters prone to dust and mould
Dust from tight streets and high humidity clog filters fast and promote mould, weakening cooling without low refrigerant.
Before the visit
Before our visit in Harat Al Yemen
- 1
Confirm the nearest safe parking spot
Harat Al Yemen has very tight streets, tell us the nearest safe parking spot for the team.
- 2
Coordinate with shop or flat occupant
If the unit is in a commercial shop, inform the owner in advance to avoid clashing with trading hours.
- 3
Inspect the copper lines externally
Check the copper lines from street level for white corrosion spots or rust before the visit, and tell us what you see.
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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.
In old buildings like Harat Al Yemen, do older AC units need more frequent charging?
Older units may be more prone to leaks at solder joints, but that doesn't mean regular charging is needed. We measure pressure and temperature each time to determine actual need.
Streets are narrow and dusty, do filters clog faster than in new areas?
Yes, tight streets and heavy dust in the old town clog filters faster, reducing cooling without low refrigerant. We clean the filter first before pressure readings.
Old town humidity and salt air are high, do they affect copper lines and refrigerant?
High humidity and salinity can corrode copper lines and contribute to slow leaks. We inspect for corrosion before pressure readings.
These buildings face intense summer heat in tight streets, does that affect refrigerant?
Intense heat and humidity together increase system pressure and may cause weak cooling or accelerated leaks. Measuring pressure under actual conditions reveals genuine leaks.
