Cooling fit for a mosque
Mosque HVAC in Harat Al Sham
Mosque cooling in Harat Al Sham, old central Jeddah, serves historic buildings with high ceilings and confined spaces hemmed by narrow streets. We design systems adapted to architectural constraints that distribute cooling within complex historic conditions.
- Even distribution
- Quiet units
- Scheduled servicing
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
When a mosque needs a specialist approach
- 1
Heat reaching the back rows
Cold air pools near the units and never reaches the back of the hall. In Jeddah's humidity, worshippers in the far rows feel the heat even with the system running. That is a design problem, not a unit fault.
- 2
Noise that disturbs prayer
Unit noise in a quiet hall distracts worshippers and breaks concentration. The right unit type, its position and the air velocity setting all reduce noise to the lowest possible level, and those choices are made at the survey.
- 3
A dome or high ceiling that traps heat
Hot air rises and collects under the dome, so the breathing level stays warm even with large units running. We set diffuser angles and air paths at the survey to push that hot layer out rather than cool over the top of it.
Who it's for
Building a new mosque that needs AC from the start
We join the design stage to fix duct routes and unit positions before ceilings are closed, so the installation is clean and efficient with no remedial work needed later.
Ask on WhatsAppYour existing mosque cools unevenly across the rows
We survey the existing system, find the cause of uneven distribution and propose changes to the airflow paths or units without disrupting the mosque.
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What the work covers
- Hall survey and airflow mapping
- Ductwork to SMACNA standard
- Units fitted at surveyed positions
- Airflow check across the rows
- Contracts scheduled between prayers
How we work
How we work
- 1
Mosque survey
We visit the mosque outside prayer times to measure the hall, ceiling height and dome, and agree diffuser positions, duct routes and unit locations before any work begins.
- 2
Design and fabrication
We design the system from the survey data and fabricate the ducts in our own workshop from G90 galvanised sheet, then prepare them for installation.
- 3
Installation at agreed times
We coordinate with mosque management to work between prayers or at times that do not interrupt activities, and we leave the hall clean at the end of each working day.
- 4
Testing and handover
We run the system and measure air distribution at the front and back rows and sound levels, adjusting the balance until comfort is even across the whole hall.
Designed for a mosque or units placed at random?
| Alrabih | The usual way | |
|---|---|---|
| Air distribution | Even across every row | Cold front, hot back |
| Sound | Assessed at survey | Not considered |
| Dome and high ceiling | Planned airflow paths | Hot layer left above |
| Maintenance | Scheduled between prayers | Visits that disrupt use |
| Startup scheduling | Programmed before each prayer | Manual, inconsistent start |
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
Harat Al Sham is a historic district in old Jeddah with ancient mosques featuring high ceilings and traditional domes located in extremely narrow streets that hamper access and movement. Buildings sit tightly together with very limited outdoor space, so AC unit placement requires innovative solutions. High humidity and trapped heat between narrow buildings intensify cooling system demand.
Harat Al Sham lies in historic Jeddah's old quarter and houses ancient mosques with high ceilings and traditional domes in extremely narrow streets.
Most historic mosques here have spacious prayer halls and very high ceilings, but outdoor units are difficult to site due to extremely narrow streets and severely limited outdoor space.
The AC setup in Harat Al Sham
- 1
Small central system with ceiling ducts to avoid structural breach
Because buildings are historic and confined, we use a small central unit with ducts running along ceilings to avoid structural damage where possible.
- 2
Few diffusers at very low speed
A small number of diffusers placed carefully at very low speed avoid strong draughts and noise that disturb worshippers and the historic setting.
- 3
Outdoor unit on roof or in rear courtyard
The condenser is usually sited on the roof or in a rear courtyard to keep it out of the extremely narrow street frontage.
Before the visit
Before our visit in Harat Al Sham
- 1
Confirm roof and structural safety before the visit
Verify the mosque roof is safe and load-bearing is adequate for mounting a central unit, which can be heavy. Consult the engineer or warden about roof and wall condition.
- 2
Coordinate with imam on visit and work times
Arrange with the imam times that do not clash with scheduled prayers and important times, and confirm safe access to roofs and rear courtyards.
- 3
Precisely measure internal and external spaces and ceilings
Take precise measurements of ceiling heights and available space for ducts and diffusers, and identify load-bearing walls and columns that may constrain runs.
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FAQ
Questions about Mosque HVAC
How do you make sure the far rows get enough cooling?
At the survey we set diffuser angles, air velocity and duct routing so cold air travels to the last row. After installation we measure the temperature difference between the front and back rows and adjust each diffuser's balance until that difference is as small as the space allows.
Can you work in a functioning mosque without disrupting prayers?
Yes. We agree a phased schedule with mosque management in advance and divide the work into sessions between prayers. Before each call to prayer we lift tools, cover any temporary openings and return the hall to a usable state, then resume afterwards.
What type of ductwork do you use in prayer halls?
We fabricate ducts in our own workshop from G90 galvanised sheet, round or rectangular as the design requires. We use Armaflex and Kimmco insulation and Foster sealants to limit heat gain and keep sound transmission through the ductwork as low as possible.
Can the system be set to start just before each prayer time?
Yes. The controls on Carrier, YORK, General, Midea, Gree and Smart Gold units support scheduled start and stop times. At the survey we confirm the scheduling options for the chosen units and programme the timings at handover, so the hall is already cool when worshippers arrive.
Can we cool only part of the hall when fewer people attend?
Yes, if the system is designed in zones. We divide the hall into sections, each with its own unit or closable outlets, so you run the front rows alone when few people attend and the whole hall for Friday prayer and occasions, cutting power use without affecting worshippers.
Our street is extremely narrow and we do not know where you will place the outdoor unit, where does it go?
We examine available options: the unit may mount on the roof, a small side balcony, or a narrow rear courtyard. We visit first to assess the best solution suited to the tight space and historic structure.
The mosque is over a hundred years old, can it tolerate modification for duct runs?
Yes, but very carefully. We design ducts to run along ceilings without breaching historic walls where possible. If wall runs are necessary, we coordinate with the imam and supervisor and follow best conservation practices.
Humidity in the old quarter is very high and affects stone and wood, does the cooling system affect the historic building?
Yes, temperature and humidity control must be very precise to avoid damage. We design systems to distribute cold air gradually and advise careful humidity management to protect historic materials.
How often does the system need maintenance in such a humid, old environment?
High humidity and the old environment demand very frequent servicing; we recommend checks every month to two months, with repeated cleaning of filters, evaporators and condensers to prevent moisture and mould buildup.
