Dedicated duct workshop
Duct fabrication in Al Amwaj
In Al Amwaj, where modern villas and residential towers spread across the northern coast, duct fabrication needs precision to distribute cool air efficiently across long horizontal and vertical runs. We fabricate duct in our workshop to exact spec so it arrives site-ready with no air leakage.
- G90 sheet
- Site dimensions
- Complex fittings
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
Who needs workshop-fabricated duct?
- 1
A contractor with project-specific sizes
Your project has non-standard sizes or volumes too large for site cutting. We fabricate rectangular and round sections from your drawings at exact dimensions, labelled and ready to hang when they reach the site.
- 2
Fittings too awkward to cut on site
Elbows, transitions, offsets and takeoffs come out distorted when cut by hand on site, leaking air and creating noise in the line. We make them in the workshop at the right dimensions with tight seams.
- 3
Extending or renovating an existing duct network
You need new branches, a damaged section replaced or a fitting that matches an old duct size. We measure the existing network on site and fabricate the pieces to match what is already there.
Who it's for
Building a facility that needs non-standard duct sizes
We read your project drawings and fabricate all sections and fittings at exact dimensions from G90 or aluminium sheet, labelled and ready to hang the moment they reach your site.
Ask on WhatsAppRenovating home AC and need fittings to match old duct
We measure the existing ductwork in your home and fabricate the branches, transitions and elbows needed to match the original duct without replacing the whole network.
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What the fabrication covers
- Site measure or drawings
- G90 or aluminium duct
- Elbows transitions and takeoffs
- Tight seams to SMACNA
- Labelled sections ready to hang
How we work
How we work
- 1
Take measurements
A technician visits the site or you send us the drawings; we list every duct section needed, its size and the correct sheet thickness for that section.
- 2
Fabricate sections and fittings
We cut, form and lock the sheet in the workshop, including all elbows, transitions, offsets and takeoffs, and each section comes out at its exact dimension.
- 3
Label and prepare for delivery
We number every section and fitting against the assembly plan so the installation crew knows exactly where each piece goes, with no guessing on site.
- 4
Deliver to site
We deliver the duct to your Jeddah site protected and ready to hang. If you need an installation crew, we can arrange that as a separate step.
Workshop fabrication or site cutting?
| Alrabih | The usual way | |
|---|---|---|
| Dimensional accuracy | Workshop machines, tight dims | Hand variation on site |
| Complex fittings | Correct elbows and transitions | Distorted, leaking air |
| Seam quality | Tight lock, low leakage | Gaps weaken pressure |
| Site schedule | Arrives ready to hang | Extra time and site noise |
| Salt and humidity | Aluminium where site demands | One sheet regardless |
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 Amwaj's buildings are modern and spacious, with detached villas and residential towers requiring complex central duct networks across large interior areas. Long runs from the outdoor unit to distant rooms need precise transitions, offsets and takeoffs that on-site cutting cannot hold, and field fabrication risks uneven dimensions and poor joint sealing. Our workshop fabrication from site measurements or drawings ensures each piece arrives to the exact dimensions needed.
Al Amwaj is a modern residential district in north Jeddah, marked by spacious villas and apartment towers with regular street layouts.
Most new villas and apartment towers here rely on central ducted AC, requiring multiple branches and complex transitions throughout the network.
The AC setup in Al Amwaj
- 1
Branched central duct network
Villas and towers here need a main duct trunk with multiple branches feeding air to many rooms across wide floor plans.
- 2
Complex horizontal and vertical transitions
Long runs and multiple storeys require precise transitions and offsets to change duct direction and maintain consistent airflow velocity.
- 3
Galvanized sheet or aluminium duct
We choose material for the coastal setting; G90 galvanized sheet offers higher durability against humidity and salt exposure.
Before the visit
Before our visit in Al Amwaj
- 1
Obtain a site drawing or floor plan
Send us a site drawing or floor plan showing duct routes and the location of indoor and outdoor units.
- 2
Confirm outdoor unit location
Specify where the outdoor unit will sit (roof or garden) and the distance to the farthest room to calculate the main duct length.
- 3
Verify corridor and ceiling space
Check that corridors and ceiling space allow for duct runs at the required diameters without cramping or bending.
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FAQ
Questions about Duct fabrication
Can you fabricate from drawings without visiting the site?
Yes, when the drawings are clear and carry the actual as-built dimensions. If a dimension is uncertain or a field change has been made, we prefer a site visit to avoid a fabricated piece that does not fit. We discuss the better approach with you before starting work.
What is the difference between galvanized and aluminium sheet for duct?
G90 galvanized sheet is the standard choice for interior duct: strong and suited to a range of pressures. Aluminium is lighter and handles Jeddah's coastal humidity and salt air better, making it right for some exposed applications or where structural load is a limiting factor. The correct choice depends on the site.
Can you make elbows and transitions to match an existing duct network?
Yes. We measure the existing network on site to match sizes precisely, whether you need a new branch added, a damaged fitting replaced or an extension tied into the original ductwork. The right approach is confirmed after the site visit.
How do you choose sheet thickness for each section?
Thickness follows section size: a large duct needs heavier sheet to hold its shape under pressure, a small one can use lighter material. We apply the SMACNA requirements to each section in the project individually, not a single thickness across the whole job.
Does Jeddah's humidity and salt air affect which sheet material to use?
Yes, particularly for sections exposed to outdoor air or installed near fresh-air intakes. G90 galvanized sheet performs well inside the building, but aluminium is the better choice where duct is in continuous contact with Jeddah's humid, salt-laden air. The site survey determines the right material for each section.
Do you fabricate duct with complex fittings for large villas?
Yes, we fabricate rectangular and round duct with transitions, branches and offsets to match your site drawing or plan, arriving ready to install.
Al Amwaj falls under a different municipality, does that affect delivery?
No, we serve all Jeddah districts including Al Amwaj, and deliver fabricated duct to site within agreed timeframes.
These villas often have multiple storeys, how do you manage vertical duct runs?
We fabricate duct in different diameters and dimensions with vertical transitions to distribute air across floors, each transition calculated precisely before fabrication.
Does coastal humidity affect metal duct?
We use G90 galvanized sheet or aluminium duct, both resistant to the corrosion from coastal humidity in Al Amwaj's beachside setting.
