Desert cooler, proper duct
Evaporative (desert) duct installation in Al Owaija
Evaporative duct installation in Al Owaija serves villas and residential blocks in this modern eastern district. The system suits open spaces and secure roofs, provided adequate natural ventilation is present.
- 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 Owaija is a modern eastern district with villas featuring outdoor spaces and residential blocks on expansive open-plan designs. The eastern location means direct sun exposure in morning and midday hours, and buildings are surrounded by open spaces and gardens that ease natural ventilation. Roofs are generally safe, but intense eastern heat and desert dust require design that protects the cooler from heat loss and ensures stable efficiency.
Al Owaija is located in north-eastern Jeddah, a modern residential district of spaced villas, apartment blocks, and secure roofs.
Most villas and blocks in Al Owaija have level, sun-exposed roofs and gardens that support natural airflow.
The AC setup in Al Owaija
- 1
Insulated roof cooler with protected duct
Villas with large gardens benefit from insulated duct that preserves cool air and resists direct eastern exposure.
- 2
Exhaust vents positioned between garden and private areas
Vents are positioned to balance effective ventilation with the owner's privacy and outdoor seating.
- 3
Shaded water tank away from the garden
The tank is mounted with sun shielding, away from the garden, to reduce direct moisture and maintain cooler efficiency.
Before the visit
Before our visit in Al Owaija
- 1
Plan cooler location and vents with the owner
Before the visit, discuss with the villa owner where to place the cooler and vents without affecting the garden or privacy.
- 2
Verify roof water and power availability
Verify steady water supply and a strong power outlet on the roof, or safe extension routes.
- 3
Inspect roof condition and eastern sun shielding
Tell us about roof condition and whether natural shade or existing insulation shields from direct eastern sun.
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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.
Is evaporative duct suitable for a villa with a large garden in Al Owaija?
Yes, large gardens provide excellent natural ventilation. The survey confirms whether the design and open spaces support the system.
Does eastern heat exposure affect the duct's performance?
Direct sun exposure raises air temperature in the duct, so we use thermal insulation and position it away from direct sunlight.
Can dust and garden moisture clog the duct?
The garden provides good ventilation but dust can build up, so we recommend filter checks every three weeks and duct cleaning twice yearly.
Do exhaust vents in the garden affect safety or privacy?
Exhaust vents are positioned away from seating and private areas, and we plan their location with the villa owner before installation.
