Cooling fit for a mosque
Mosque HVAC in Al Hijaz
In Al Hijaz, east Jeddah, modern mosques serve sprawling residential communities with spacious halls and high ceilings. Alrabih designs central cooling systems that cool efficiently whilst maintaining a quiet, comfortable atmosphere for worshippers.
- 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
Al Hijaz is a sprawling east Jeddah zone with residential blocks and scattered villas; modern mosques here are designed with spacious halls and high ceilings to accommodate large congregations. Coastal heat and high humidity impose a substantial cooling load year-round, especially in summer. Central systems deliver even cold air distribution across large distances and need careful design and heavy-duty cables to achieve efficiency.
Al Hijaz sits in the east, a sprawling zone with residential blocks and scattered villas and mosques with large halls.
Most large Al Hijaz mosques use multi-unit central cooling with long ducts and distributed grille networks.
The AC setup in Al Hijaz
- 1
Multi-unit central system with long duct runs
Large Al Hijaz halls need two or more units connected by long distributed ducts with multiple cold air injection points.
- 2
Heavy insulation on long ducts
Long ducts are wrapped with heavy thermal and sound insulation to prevent coolth loss and noise over extended distances.
- 3
Multiple outdoor units on separate roofs or walls
Outdoor units are distributed across different roofs or walls to improve ventilation, ease maintenance and enable routine servicing.
Before the visit
Before our visit in Al Hijaz
- 1
Comprehensive survey of internal spaces and duct routes
Before the visit, thoroughly inspect all ceilings and internal walls and identify long duct routes and potential obstacles.
- 2
Identify multiple outdoor unit locations
Identify distributed safe locations on roofs or exterior walls, measuring distances from the main electrical panel.
- 3
Assess electrical capacity and drainage across the entire site
Verify sufficient electrical capacity in the main and any sub-panels, and confirm safe, reliable drainage points are available at multiple locations.
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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.
The hall is very large and ceilings very high, how do you ensure even distribution from top to bottom?
We design an advanced duct network with multiple distribution points at different heights, so cold air descends gradually without harsh draughts. Testing and measurements confirm distribution before operation.
The system needs multiple outdoor units, where do you place them in the sprawling area?
We assess the roof, exterior walls and distances from the main electrical panel. Units are placed to provide ample ventilation, maintenance access and safe spacing between them.
Long duct runs may lose a lot of coolth, how do you minimise loss?
We use thick thermal insulation on ducts and design an efficient distribution network so coolth reaches the ends without loss. Pressure and flow checks confirm efficiency.
The main electrical panel may be far from the outdoor units, what's the solution?
We assess distances and use heavy-gauge cables with proper sizing. We may install sub-panels near the outdoor units if the distance is very large.
