Design before you buy
HVAC design in Al Ammariyah
HVAC design in Al Ammariyah addresses the needs of medical, administrative and residential complexes in this rapidly growing central district. We calculate heat load precisely and select the system before purchasing any equipment.
- Accurate heat loads
- System selection
- Duct drawings
Clients We're Proud to Serve
Organisations and companies that trusted Alrabih with their projects.
Who needs a considered design?
- 1
Owner planning a new build
Before walls and ceilings are finished you still have the chance to route ducts and place units correctly. Early design prevents costly surprises during fit-out and delivers rooms that cool evenly from the first day of operation.
- 2
Architect or contractor needing drawings
The project needs mechanical drawings to co-ordinate with the structure, electrical and plumbing trades. We produce duct layout drawings, equipment positions and installation heights in a format the site can use directly.
- 3
Existing building with uneven cooling
Some rooms stay hot even with the AC running while others are over-cooled. The cause is usually wrong airflow distribution or uncalculated capacity. A redesign finds the fault and defines what needs changing before any new purchase.
Who it's for
Building a villa and want design before fit-out
We calculate the heat load for every room in the villa and draw duct routes before ceilings are closed, so you avoid breaking the finished work later.
Ask on WhatsAppRunning a commercial building with hot rooms
We review the current airflow distribution and recalculate loads per space, then identify faults in the ducts or equipment and draw the required changes before any purchase.
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What the design covers
- Heat load per room
- Right system type selected
- Equipment from authorised brands
- Duct distribution layout drawings
- Equipment schedule for construction
How we work
How we work
- 1
Gather building data
We ask for the architectural drawings or visit the site to measure spaces and record glazing, orientation and internal loads from people, equipment and kitchens.
- 2
Calculate heat loads
We calculate the heat load for each space separately, accounting for Jeddah's intense sun, high humidity and exposed facades, so every unit is sized on real load not guesswork.
- 3
Select system and equipment
Based on loads and building type we choose between splits, ducted systems, central air and chiller, and specify equipment from Carrier, YORK, General, Midea, Gree and Smart Gold to suit the project.
- 4
Draw and deliver
We draw duct routes, unit positions, diffuser locations and installation heights, and deliver a complete equipment schedule ready for construction or tendering.
Calculated design or buying blind?
| Alrabih | The usual way | |
|---|---|---|
| Unit size | Based on actual load | Guessed or oversized |
| Airflow distribution | Drawing that achieves even flow | Diffusers placed at random |
| Co-ordination | Drawings before fit-out | Costly changes later |
| System type | Suited to building and budget | Whatever the shop suggests |
| Humidity and salt air | Accounted for in equipment choice | Discovered after installation |
Everything your AC needs, from one team
From system design and duct fabrication to installation, commissioning and maintenance.
Split AC installation
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Request this serviceDuct fabrication
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Request this serviceDuct cleaning & sanitising
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Request this serviceAHU maintenance
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Request this serviceMosque HVAC
Request this serviceMall & retail HVAC
Request this serviceRestaurant & cafe HVAC
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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 Ammariyah is a relatively modern central district with hospitals, clinics, government offices, banks and residential blocks, with medium outdoor spaces and wider streets than older areas. This functional mix means a hospital needs a different system than a bank or residential flat, with vastly different cooling requirements. Medical buildings need high-precision cold distribution and humidity control, whilst residential blocks may use simpler systems. Intense heat and rapid urban expansion demand forward-looking design balancing efficiency and future growth.
Al Ammariyah lies in central Jeddah, a modern medical, administrative and residential district of medium-height buildings and relatively wide streets.
Hospitals and clinics in Al Ammariyah use powerful central systems with precise humidity control, whilst residential blocks often use multiple split units or medium central systems.
The AC setup in Al Ammariyah
- 1
Powerful central system for hospitals and clinics
Hospitals need powerful central cooling units with precisely distributed ducts for each department and advanced filters for infection and humidity control.
- 2
Multi-head split for modern residential blocks
Modern residential blocks in Al Ammariyah use one outdoor unit with multiple indoor heads, offering flexible control between flats.
- 3
Hybrid systems for offices and commercial spaces
Offices and banks may use a hybrid of central system for shared areas and split units for private offices, improving comfort and efficiency.
Before the visit
Before our visit in Al Ammariyah
- 1
Provide medical or administrative blueprints
Send building blueprints marking sensitive areas (operating rooms, incubators, storage) and expected operating hours before the visit.
- 2
Prioritise cooling needs by department
Clarify which departments need sensitive cooling (e.g. storage or labs) and which are lower priority, for better design.
- 3
Confirm outdoor space for units
Confirm safe roof or adequate outdoor space is available for outdoor units, especially for multi-wing projects.
More districts for HVAC design
Other services in Al Ammariyah
FAQ
Questions about HVAC design
When is a chiller more suitable than split units?
The decision depends on the building area, number of spaces and how it is used. In large commercial and hotel buildings a chiller gives flexible control and simplifies central maintenance. In apartments and smaller villas a split or ducted system usually fits better. The calculated heat load is what determines the right choice for your building.
How does a large glazed facade affect the design?
Large glazing exposed to Jeddah's sun raises the heat load noticeably, especially on west and north-west facades. We calculate solar gain through each facade separately, and this can change the unit type selected for that room or require extra diffusers to handle the higher load.
Can you design for an existing building with no architectural drawings?
Yes. When no drawings exist we visit the site and measure every space ourselves, recording facades, glazing and how each room is used. The survey takes longer than reviewing ready drawings, but the calculations still rest on real measurements rather than estimates, which is what makes the results reliable.
Does the design include diffuser types and dampers?
The drawings specify diffuser types, positions and sizes to match ceiling height and room shape, and show where dampers are needed to balance airflow to each zone. These details matter because a diffuser in the wrong place wastes a large part of the system capacity even when the units are correctly sized.
Does duct design differ between the ground floor and upper floors?
Yes. The top floor typically carries a higher heat load because the roof is directly exposed to the sun, which affects duct sizes and the number of diffusers needed on that level. We design each floor separately based on its own calculated load and show where dampers are needed to balance airflow between floors.
I run a clinic in Al Ammariyah and want a hygienic cooling system, what's the best option?
Clinics need a central system with high-efficiency air filters and precise humidity control to prevent bacterial growth. We design a system meeting high hygiene standards, with easy-to-clean ducts and scheduled maintenance.
The new hospital in our district needs a complex AC system, how long does design take?
Hospital projects are large and need more time for study, calculations and drawings. After site visit, measurements and consultation with medical staff on sensitive areas, we send detailed designs. Timeframe varies with project scale.
Ground floor has offices and upper floors are residential, do we need two separate systems?
Usually yes, since offices need continuous cooling during business hours whilst flats need less. We design separate systems for each section with independent control, saving efficiency and maintenance costs.
Al Ammariyah's streets are wide, is outdoor unit placement easier than in older areas?
Yes, wider streets provide more space for equipment and pipes, but distances between buildings and roof heights may be longer. We assess the site and choose the optimal pipe route to minimize energy loss and noise.
