Central AC, start to finish
Central AC installation in Al Sahl
In Al Sahl, south Jeddah, central AC installation in villas demands skilled design covering spacious layouts and high ceilings. Alrabih handles the project from start to finish on-site without dividing responsibility.
- Design and build
- Own-workshop ducts
- Full commissioning
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
Who needs a complete central system?
- 1
A new villa before finishing
The finishing stage is the right time to run central AC ducts before the ceilings close. Delaying the decision means extra cost later or compromises in the duct route that weaken airflow in certain rooms.
- 2
A commercial or office building
A commercial building needs airflow that fits how the floors are divided and how the load varies between levels. The site survey sets unit count, duct routes and outlet positions before any decision is made.
- 3
An old system draining power
Old units, deteriorating ducts and leaking copper push the electricity bill up without cooling the space properly. Replacing the whole system starts with a fresh load calculation, not with larger units pushed into the same old ductwork.
Who it's for
Building a villa and need ducts before ceilings close
We visit during the finishing stage, design duct routes and outlet positions, fabricate the ducts in our workshop and install them before the ceilings close, so you take over a fully working villa.
Ask on WhatsAppManaging a commercial building and replacing an old system
We recalculate the loads, design airflow to match the current floor layout and replace both units and ductwork completely so the system runs reliably without repeated faults.
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What the contract covers
- Load calc and system design
- Units from authorised distributors
- Duct fabrication and fitting
- Insulated Mueller copper runs
- Full commissioning and handover
How we work
How we work
- 1
Survey and load calculation
The engineer visits, measures each zone, and calculates the thermal load per area, accounting for facade orientation, ceiling height and how the space will be used in Jeddah's hot and humid conditions.
- 2
Design and unit selection
We draw duct routes and outlet positions and select units from Carrier, YORK, General, Midea, Gree or Smart Gold, then present the design to you before any work begins.
- 3
Fabrication and installation
Round and rectangular ducts are fabricated in our workshop from G90 galvanised sheet to SMACNA standards, then installed on site alongside the copper runs, insulation and electrical connections.
- 4
Commissioning and handover
We pressure-test the copper lines, vacuum them, check air balance at every outlet and condensate drain fall, then hand the system over to you in full working order.
One contractor or several parties?
| Alrabih | The usual way | |
|---|---|---|
| Design and build | One party accountable | Designer and installer split |
| Ducts | Our workshop, G90 standard | Unmonitored outside suppliers |
| Copper | Mueller up to 30 metres unwelded | Unknown source, many joints |
| Commissioning | Pressure test, vacuum, air balance | Straight power-on, no testing |
| Insulation | Armaflex and Kimmco fitted | Patchy or missing |
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
Al Sahl is a modern residential district of spacious villas on wide plots, with contemporary design, high ceilings and open spaces, requiring precise heat load calculation over large areas. The high ceilings and open layouts amplify the thermal balance challenge, so we design ducts with calculated diameters and air balancers on each branch to ensure uniform distribution across all rooms and hallways, especially during hot summers.
Al Sahl is in the south, a district of spacious modern villas with open layouts and high ceilings.
Most villas in Al Sahl use one or two central units with ductwork distributed through suspended ceilings or main hallways.
The AC setup in Al Sahl
- 1
One or two central units for spacious villa
Spacious Al Sahl villas may use one large unit or two separate ones depending on size and floors, with ducts distributed across all sections.
- 2
Distributed air outlets in ceiling and hallways
Outlet and return vents are evenly spaced across ceilings and main hallways to cover the open spaces with balance.
- 3
Sized ducts with air balancers
Distribution ducts are designed with calculated diameters and fitted with air balancers on each branch for even distribution across all zones.
Before the visit
Before our visit in Al Sahl
- 1
Provide a comprehensive architectural drawing
Send your villa's complete plan showing all rooms, open spaces, ceiling heights, doors and large windows.
- 2
Specify the villa's orientation and sun exposure
Tell us the villa's orientation and locations of large windows, especially south and west-facing, as solar exposure heavily affects load.
- 3
Schedule a comprehensive site measurement visit
We visit to measure all ceilings, distances, openings and spaces before final design.
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FAQ
Questions about Central AC installation
How do you decide the right unit size for my villa?
We calculate the thermal load for each zone based on its area, ceiling height, number of external openings, orientation and how it will be used. In Jeddah the sun's effect on west-facing facades is significant, and high humidity goes into the calculation. We choose the unit size after this calculation, not before.
Do you make the ducts yourselves or buy them ready-made?
We fabricate round and rectangular ducts in our own workshop from G90 galvanised sheet or aluminium sheet depending on what the project needs. This lets us cut ducts to the exact site dimensions and fit them tightly, avoiding ill-fitting sections that leak air and raise electricity consumption.
What if the copper run to an outdoor unit is very long?
We use Mueller copper in runs of up to 30 metres without welded joints, which reduces potential leak points. If a run exceeds that, the survey determines whether the outdoor unit position needs rethinking or whether the refrigerant charge needs adjustment according to the type shown on the unit's nameplate.
Can each floor of the villa run on its own?
Yes, and it is settled at the design stage. Each floor can have its own unit, or the network can be split into zones with dampers and a thermostat in each, so you do not cool the whole upper floor while the family sits in the majlis. We recommend the right option after the load calculation.
Do the outdoor units need a special base on the roof?
Yes, and the roof surface determines what kind of base is needed. For villas we fabricate a raised steel frame that keeps the unit clear of pooled rainwater and allows airflow beneath it. The exact height and angle depend on the roof pitch and the condensate drain position, which the site survey establishes. The aim is to keep the unit level and to prevent vibration movement during operation.
Do the large open spaces require more air distribution channels?
Yes, spacious layouts need more outlet vents and air balancers on distribution branches to prevent air pooling in one area. We calculate outlet count and duct section based on size and actual load.
Is a standard unit enough for Al Sahl's extreme summer heat?
No, we calculate peak summer load from expected temperature, windows and sun exposure, and choose a unit sized for the peak.
Do the high ceilings affect duct design?
Yes, high ceilings provide space for larger, better ducts, but we need balanced air velocity to avoid noise and turbulence. We size sections so velocity is comfortable and efficient.
Where should the outdoor unit go safely in a large Al Sahl villa?
We choose a roof or garden spot away from bedrooms and living areas, and ensure full ventilation around the unit and safe access for maintenance.
