Cooling fit for a mosque
Mosque HVAC in Umm Sidrah
In Umm Sidrah, east Jeddah, mosques face large congregations and hot, humid climate challenges. Alrabih designs powerful, efficient cooling systems that balance performance with low noise.
- 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.
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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
Umm Sidrah, in east Jeddah, is a growing residential district with diverse mosques, old and new, drawing large congregations especially at peak times and special occasions. Proximity to the coast means persistent high humidity, and summer heat is intense. Older mosques may need upgrading from old systems or windows, while newer ones have better insulation but larger congregations. Balancing performance and silence is crucial, as worshippers expect thermal comfort without noise distraction.
Umm Sidrah lies in east Jeddah, a growing residential district with older and newer mosques near the coast.
Umm Sidrah mosques use advanced central or split systems, with some requiring upgrades from older installations.
The AC setup in Umm Sidrah
- 1
High-capacity central system
Large Umm Sidrah mosques need high-capacity central units to cool large congregations at peak prayer times.
- 2
Advanced central dehumidification
High coastal humidity makes dehumidification essential, not optional, especially in wet months.
- 3
Supplementary split systems for secondary areas
Some mosques use supplementary split units for secondary areas like an attached school or store, alongside the main central system.
Before the visit
Before our visit in Umm Sidrah
- 1
Enquire about prayer times and special events
Knowing the prayer schedule and special events helps us pick the best time for system assessment and maintenance.
- 2
Verify the building's thermal insulation condition
For older mosques, we inspect insulation quality, cracks and windows to understand the actual thermal load on the system.
- 3
Mark outdoor unit locations and water drainage
Safe outdoor unit placement and confirming good water drainage are essential in this humid area.
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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 mosque gets huge crowds, especially Fridays and holidays, how does the system handle them?
We calculate capacity based on maximum expected load on Fridays or holidays, and select units with slight overcapacity to ensure cooling even at peak crowds.
Coastal humidity here is high, does this affect the system?
Yes, high humidity increases cooling load and speeds mould growth in ducts. We install extra dehumidification and recommend duct cleaning every six months.
Some of our old mosques are very old, can the system be upgraded without major demolition?
We assess the building condition, insulation and available space, and usually can upgrade with limited intervention, though some very old buildings may need more extensive modifications.
Noise from cooling units distracts worshippers, how do you do maintenance without disruption?
We schedule routine maintenance at off-peak times between prayers, and use low-noise units with high-quality sound insulation.
