Design before you buy
HVAC design in Abu Jaalah
HVAC design in Abu Jaalah calculates the heat load for homes, villas and residential blocks, and selects the right system between split and central based on building size and future expansion. Drawings and calculations before construction save costs and prevent errors.
- 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
Request this serviceDuct installation
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Request this serviceDuct fabrication
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Request this serviceElectro-mechanical works
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Request this serviceAC repair & faults
Request this serviceAC cleaning
Request this serviceRefrigerant charging
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Request this serviceChiller maintenance
Request this serviceAC removal & refitting
Request this serviceDuct cleaning & sanitising
Request this serviceAC servicing by brand
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Request this serviceAHU maintenance
Request this serviceFridge & freezer service
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Request this serviceDisplay fridges & chillers
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Request this serviceVilla & home HVAC
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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
Abu Jaalah is a rapidly developing residential district with villas and apartment blocks expanding continuously. Buildings here are relatively new and can take any AC system type, but many clients prefer central systems for efficiency and aesthetics. Design must account for the buildings' larger footprints and the absence of old constraints, allowing flexibility in placement and future expansion.
Abu Jaalah is in south Jeddah, a modern residential district with spacious villas and apartment blocks with large floor areas.
Most new villas and blocks in Abu Jaalah choose central AC systems with distributed ducts because of the ample space and desire for unified interior appearance.
The AC setup in Abu Jaalah
- 1
Single central system for villas and mid-size blocks
Most villas and mid-size blocks in Abu Jaalah choose one central system with ducts distributed through high ceilings.
- 2
Two separate systems for large blocks
Large blocks may need two separate systems, one for lower floors and one for upper floors, to balance the load evenly.
- 3
Outdoor unit elevated on a platform
Coastal humidity requires the outdoor unit to be mounted on a sturdy platform away from water pooling and damp ground.
Before the visit
Before our visit in Abu Jaalah
- 1
Measure the villa or block's floor area
Ready a rough sketch of the villa or block showing the main rooms, halls, kitchens and bathrooms.
- 2
Identify roof or courtyard location
Tell us the best location for the outdoor unit, whether on roof or courtyard, and confirm there are no obstacles or permanent shade.
- 3
Tell us about any future expansion plans
If you plan to add rooms or a new floor, let us know so we design the system with capacity for expected expansion.
More districts for HVAC design
Other services in Abu Jaalah
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.
A large villa with several floors, will one system be enough?
We calculate the heat load for each floor separately. Large villas usually need one central system with one outdoor unit if space allows, or two separate systems if each floor has different needs.
We plan to expand the house later, does the design allow for that?
Yes, we design the system with extra capacity for modest expansion without needing a new outdoor unit. We clarify this in the report so you can plan ahead.
Hot winds from the west hit the villa, does that increase the heat load?
Yes, hot winds and direct sun on the west side significantly increase the heat load. We add extra load in our calculations and recommend better insulation for western walls and windows if possible.
The ground near the coast may be damp, does that affect the foundations and outdoor unit?
High humidity may affect the outdoor unit's durability. We select units with higher corrosion resistance and elevate them properly above ground. We also check water drainage around the unit location.
