Desert cooler, proper duct
Evaporative (desert) duct installation in Al Tadamun
In Al Tadamun, southern Jeddah, evaporative duct installation serves modern villas and residential buildings with wide flat roofs. Alrabih's team opens the roof, seals it against moisture and dust, then runs duct sized for the villa's large spaces.
- 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.
Ask on WhatsApp
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.
Split AC installation
Request this serviceDuct installation
Request this serviceCentral AC installation
Request this serviceDuct fabrication
Request this serviceCold room installation
Request this serviceElectro-mechanical works
Request this serviceChiller & AHU installation
Request this serviceHVAC design
Request this serviceAC repair & faults
Request this serviceAC cleaning
Request this serviceRefrigerant charging
Request this serviceCentral AC maintenance
Request this serviceChiller maintenance
Request this serviceAC removal & refitting
Request this serviceDuct cleaning & sanitising
Request this serviceAC servicing by brand
Request this serviceOperation & maintenance contracts
Request this serviceAHU maintenance
Request this serviceFridge & freezer service
Request this serviceCold rooms
Request this serviceDisplay fridges & chillers
Request this serviceFactory HVAC
Request this serviceWarehouse HVAC
Request this serviceVilla & home HVAC
Request this serviceHotel HVAC
Request this serviceSchool HVAC
Request this serviceHospital HVAC
Request this serviceMosque HVAC
Request this serviceMall & retail HVAC
Request this serviceRestaurant & cafe HVAC
Request this service
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 Tadamun is a relatively new district with spacious villas and wide flat roofs with large underroof cavities. This ample space offers flexibility in siting the cooler and designing the duct network to air all rooms freely. Yet villas here need careful survey to find the best cooler position for even air distribution while keeping noise out of bedrooms.
Al Tadamun lies in southern Jeddah, a district of modern villas with wide flat roofs and regular architectural cavities.
Most villas here were built in recent decades to modern standards, with flat roofs having height and space for evaporative duct to run easily.
The AC setup in Al Tadamun
- 1
Main duct distributed from central roof opening
We site the cooler centrally on the roof and run the main duct from it, then branch to distribute air throughout the villa.
- 2
Multiple duct branches for each villa section
We split the duct network into separate branches for each villa section, first floor, second floor or wings, to ensure even distribution.
- 3
Multiple exhaust vents on roof and facade
We space exhaust vents across the roof and outer facades to let used air escape freely without moisture building up.
Before the visit
Before our visit in Al Tadamun
- 1
Map out the villa layout and room arrangement
Show us a villa plan or clear description of how many rooms you have and where they are, so we can design the duct network accurately.
- 2
Ensure the cooler and tools can reach the roof
Check that your roof stairs safely handle the cooler, duct and tools without damaging walls or interior.
- 3
Prefer a cooler site away from bedrooms
If bedrooms are upstairs or to the side, discuss with us placing the cooler away from them to reduce noise reach.
More districts for Evaporative (desert) duct installation
Other services in Al Tadamun
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.
Does evaporative duct work for large villas with five or more rooms?
Yes, we design a branched duct network that distributes cool air evenly to all rooms. A site survey determines the best duct routes and opening sizes for each space.
How do you handle noise from the cooler reaching the bedrooms?
We site the cooler away from bedrooms, and use sound insulation in the duct if needed to reduce noise reaching sleeping areas.
New villas have internal walls, does this affect duct routing?
We plan duct routes around your wall and room layout. The wide architectural cavities here allow us to avoid walls without major alterations.
Wide flat roofs get intense sun, does this hurt cooling efficiency?
Yes, heat affects efficiency, but siting the cooler and duct well reduces this. We may recommend roof insulation or timed shading for the cooler during peak heat.
