Cooling fit for a mosque
Mosque HVAC in Al Zahra
In Al Zahra, west Jeddah near the coast, mosques face heavy humid heat year-round, and high ceilings demand precise, swift air distribution. Alrabih balances cooling capacity, sound control, and humidity in a unified design.
- 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 Zahra lies west and near the coast, so mosques face high coastal humidity and intense heat through a long summer. Humidity significantly raises cooling load and accelerates metal and unit corrosion, so the system must be robust and well-maintained. Proper condensate drainage is critical here because excess moisture builds in the system quickly. Also, high ceilings and open ventilation require uniform horizontal distribution without gaps.
Al Zahra sits in west Jeddah close to the coast, a residential zone where scattered mosques face high coastal humidity.
Most Al Zahra mosques use central AC with outdoor units on roofs, but condensate drainage requires special attention because of high humidity.
The AC setup in Al Zahra
- 1
Central system with coastal-rated units
Outdoor units are chosen with galvanised materials and marine-grade coatings to resist salt and high humidity.
- 2
Protected and multi-path condensate drainage
Drain lines are carefully installed with proper slopes and multiple safe outlets to prevent blockages.
- 3
Low-speed fans to minimise moisture evaporation
Low fan speeds reduce excess air movement that might re-evaporate moisture and encourage mould.
Before the visit
Before our visit in Al Zahra
- 1
Inspect existing drain lines and roof condition
Check current drain pipes and confirm the roof is sound for outdoor unit mounting without leaks.
- 2
Ask about past maintenance and cleaning history
Knowing whether previous units were cleaned regularly helps us assess their condition and any need for initial cleaning.
- 3
Identify safe drain outlets away from entrances
Ensure condensate outlets are away from the mosque entrance and courtyard to avoid excess moisture near entry points.
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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.
Humidity here is very high, how do you protect units from rust and corrosion?
We choose units rated for coastal environments with galvanised materials and protective coatings, and recommend regular cleaning of coils and outdoor units.
Where does condensate from the indoor unit drain?
We run drain pipes carefully to a safe outlet and clean them regularly to prevent blockages from excess moisture.
Does salty air affect cooling performance?
Yes, salt accumulates on outdoor coils and can reduce efficiency, so we design units with protected vents and recommend annual cleaning.
Humidity causes mould in the prayer hall, is that from the AC?
Coastal humidity is naturally high, and AC lowers temperature but relative humidity may stay elevated. We design ventilation to reduce moisture buildup, and recommend periodic window opening during dry periods.
