Desert cooler, proper duct
Evaporative (desert) duct installation in Al Aziziyah
Evaporative duct installation in Al Aziziyah, a central Jeddah district of villas, residential blocks and some commercial units, requires careful surveying of the roof and interior spaces to determine whether evaporative cooling fits the existing design.
- Sealed roof
- Galvanised duct
- Air changes
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
When you need evaporative cooler duct
- 1
A large workshop or warehouse
Large industrial spaces get very hot in Jeddah summers and split units are expensive to run there. An evaporative cooler with distribution duct brings air to work areas at lower running cost, provided the space is ventilated and not sealed shut.
- 2
A majlis tent or seasonal space
Outdoor majlis areas and seasonal tents do not suit split AC units because of the structure. Evaporative duct delivers a cool air stream as long as the space is open enough for air changes, which the survey confirms.
- 3
Old duct with poor airflow
Old sheet duct cracks over time and air leaks from the joints before reaching the space. On site we check whether the problem is leaking duct, poor distribution, or the cooler size itself.
Who it's for
Need to cool a large workshop at reasonable running cost
We survey the workshop and check its ventilation, then run galvanised duct from the roof cooler to the work areas with exhaust openings that keep air moving through the space.
Ask on WhatsAppYou have an outdoor majlis that needs seasonal cooling
We check how open the majlis is and assess its structure, then design the duct route and exhaust openings so cool air reaches the seating area without humid air building up inside.
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What the work covers
- Weatherproof roof collar fitted
- G90 galvanised duct runs
- Branch and air outlet connections
- Exhaust openings for air changes
- Airflow check after start-up
How we work
How we work
- 1
Site survey first
We visit, measure the space and check how open it is, because evaporative cooling needs enough ventilation; without it humidity rises inside and the cooling effect drops.
- 2
Plan the duct route
We plan the main duct run, branches, air outlet positions and exhaust opening locations, and show you the layout before any work starts.
- 3
Install duct and seal roof
We open the roof, fit and seal the collar against leaks, then run the galvanised duct and hang it on proper supports so it does not sag.
- 4
Start-up and test
We run the evaporative cooler and check that air reaches every outlet and that the exhaust openings are working so fresh air is visibly moving through the space.
Planned duct or a quick run?
| Alrabih | The usual way | |
|---|---|---|
| Roof seal | Weatherproof, sealed collar | Silicone that cracks in heat |
| Sheet | G90 galvanised | Unspecified gauge |
| Exhaust | Sized openings for air changes | Left to chance |
| Space suitability | Confirmed by survey | Not checked |
| Duct supports | Fixed hangers along the full run | Duct left unsupported |
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.
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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 Aziziyah is a mixed district combining detached villas, mid-rise residential blocks and some light commercial uses, marked by relatively accessible roofs and interior passages and courtyards that vary by design. Evaporative cooling may suit some villas and larger blocks, but requires careful study of the existing structure, open spaces and outdoor ventilation. Galvanised duct runs across the roof and through walls, which may need minor adjustments to the existing build.
Al Aziziyah sits in central Jeddah, a mixed-use area of villas, residential blocks, some shops and offices.
Most residential buildings here have accessible roofs, but shared roofs in apartment blocks need coordination with building management before installation.
The AC setup in Al Aziziyah
- 1
Roof cooler for villa or apartment block section
Detached villas have dedicated roofs simplifying installation. Blocks need duct partitioning to serve separate sections or multiple units.
- 2
Galvanised duct through interior passages and spaces
Duct runs through entry halls or shared spaces, with exhaust openings in different units or sections.
- 3
Water connections from roof to exterior drainage
Water used in evaporation drains from the roof through safe pipes, ensuring no leaks onto units below.
Before the visit
Before our visit in Al Aziziyah
- 1
Coordinate with building management or villa owner
Tell building management or the villa owner about the visit in advance and confirm roof and interior access is possible.
- 2
Confirm roof structure and condition
Inspect the roof and load-bearing walls and let us know of any cracks, leaks or previous alterations that might affect installation.
- 3
Clear roof space of obstacles
Remove any water tanks, old AC units or cables from the planned area before the visit.
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FAQ
Questions about Evaporative (desert) duct installation
Does evaporative cooling work in Jeddah in summer?
Evaporative cooling relies on water evaporation and weakens when humidity is high. In Jeddah, humidity is higher near the coast and lower inland. The survey decides whether the space and the season are suitable, which is why we do not start before visiting the site.
Why do exhaust openings matter as much as the duct runs?
An evaporative cooler pushes fresh air in continuously. Without an exit path, humid air builds up inside and the felt temperature rises. Properly sized exhaust openings keep air moving through, not piling up, and that is the core of how this type of cooling works.
What sheet do you use for the duct?
We use G90 galvanised steel sheet, which resists rust in Jeddah's humid and salty air. The duct sections are formed in our workshop before being taken to site, then hung on supports along the run to stop them sagging.
Can one cooler supply duct to more than one area?
Duct can be branched from one unit to more than one outlet, but each branch reduces the airflow at every opening. The survey decides whether the cooler has enough output for the total area, or whether a separate unit for each wing is the better answer.
Can evaporative cooler duct run through a false ceiling?
Evaporative cooling depends on continuous air movement and exchange, which requires exhaust openings in the same space the duct serves. A false ceiling restricts that flow unless dedicated openings lead air out of the building. The site survey decides whether the structure allows it, because the duct run and the exhaust are designed together as one system, not separately.
Would evaporative cooling suit our large residential block?
It depends on the number of units, open spaces, and roof access. We visit to assess the right system and coordinate with building management.
How do we coordinate the shared roof with you for cooler installation?
We ask you to schedule with building management first, then we visit with them to assess the site and plan the installation precisely on the shared roof.
Al Aziziyah gets very hot and humidity varies, does that affect evaporative cooling?
Evaporative cooling works at higher efficiency with low humidity. Al Aziziyah's humidity shifts seasonally, which affects system performance, so we recommend careful surveying to assess expected output.
Electrical lines already run on the roof, does that affect installation?
Yes, we check the cable routes and existing circuits and plan to avoid any conflict. We also ensure a safe dedicated electrical line is available for the cooler.
