Desert cooler, proper duct
Evaporative (desert) duct installation in Harat Al Bahar
In Harat Al Bahar, old downtown, installing evaporative cooling on the tight roofs calls for careful planning because the buildings are closely packed and roof space is cramped. Our team balances cooling needs with the building constraints of this historic quarter.
- 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
Harat Al Bahar is an old district of closely packed residential and commercial blocks near the port, with narrow roofs shared by several shops and flats on each floor. High coastal humidity cuts evaporative cooling efficiency, and the system may be a limited choice here. When it suits, we assess the site carefully and discuss with the owner which cooling options work best given the area's humidity and available space.
Harat Al Bahar sits in Jeddah's historic downtown near the port, an old district of closely built blocks with narrow roofs and high coastal humidity.
Most Harat Al Bahar buildings have narrow shared roofs serving multiple residential and commercial units, limiting the space for a full evaporative unit.
The AC setup in Harat Al Bahar
- 1
Compact evaporative unit on a shared roof
If limited shared roof space allows, we fit a compact evaporative unit sized to the cooling need and space, with shorter ductwork.
- 2
Window or upgraded window evaporative cooler
For some tight flats and shops, a window or sill-mounted evaporative option may be more practical than running long ductwork.
- 3
Metal supports anchored to roof edges
Narrow roofs need careful anchoring at the edges to keep the unit stable without compromising the shared building's integrity.
Before the visit
Before our visit in Harat Al Bahar
- 1
Contact the building manager and other residents
Before the visit, clarify the installation plan and roof location with the building manager and other residents, and get their approval in advance.
- 2
Measure humidity and temperature in the space
Record current humidity and temperature readings and tell the team before the visit so they can assess how well evaporative cooling will work.
- 3
Find the nearest safe parking
Harat Al Bahar's streets are tight and busy. Agree with the team on the nearest safe parking before visit day so they can reach the roof easily.
More districts for Evaporative (desert) duct installation
Other services in Harat Al Bahar
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 cooling work well in humid Harat Al Bahar?
High coastal humidity reduces evaporative cooling efficiency. We visit to measure the humidity and heat, and tell you honestly whether evaporative cooling will do or a different system suits better.
The roofs are narrow and shared, can we fit a unit on one roof?
Shared roofs complicate the job and need consent from all residents. We assess whether space allows it and coordinate with the building management before starting.
Does salt spray and moisture from the sea damage the ductwork?
Yes, coastal air speeds metal rust. We use rust-resistant or heavily galvanised ductwork and tell you upfront about extra protection costs needed in Harat Al Bahar.
Will the old wiring in the building run an evaporative cooler?
Many Harat Al Bahar buildings have old electrical connections that may not handle extra load. We check the switchboard and assess whether upgrading the circuit is needed before installation.
