Design before you buy
HVAC design in Al Sanabel
In Al Sanabel, south Jeddah, HVAC design must account for intense heat and humidity together. We choose the right system for your building and draw layouts from accurate load calculation before any purchase.
- 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 cleaning & sanitising
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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 Sanabel is a modern residential area in south Jeddah with modern villas, multi-storey apartment blocks, commercial complexes and restaurants. The southern, near-coastal location means very harsh heat and very high humidity in summer. Buildings with equipment chosen without precise heat-load and humidity calculation will see sharp indoor temperature spikes or excessive power consumption.
Al Sanabel sits in south Jeddah near the coast, a modern district of villas, apartment blocks, commercial complexes and restaurants.
Most buildings in Al Sanabel need strong central systems or high-capacity multi-head splits because of the coastal climate.
The AC setup in Al Sanabel
- 1
Heavy-duty central for complexes and large villas
Commercial complexes and large villas in Al Sanabel need central systems with very high cooling capacity and well-insulated ducts.
- 2
Multi-head split with humidity control
Villas and flats may need strong split systems with extra filters and enhanced dehumidification to manage high humidity.
- 3
Enhanced drainage and continuous monitoring
The design includes strong drainage and monitoring points to ensure moisture does not accumulate in coils and pipes.
Before the visit
Before our visit in Al Sanabel
- 1
Get precise plans and building dimensions
Send complete architectural plans with dimensions, window locations and all facades before the visit.
- 2
Confirm electrical panel location and available capacity
Tell us the main panel location, rating and available circuits for the new system.
- 3
Identify potential outdoor and indoor unit locations
Mark possible roof or balcony spots for the outdoor unit and planned indoor unit locations in each room.
More districts for HVAC design
Other services in Al Sanabel
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.
Heat and humidity together in Al Sanabel, how do they affect design?
We add extra cooling load for humidity, and select units with strong dehumidification and enhanced drainage to handle excess moisture.
Commercial complexes and restaurants in Al Sanabel have different needs, how do you calculate this?
We separate each commercial space or restaurant's needs, adding extra cooling load for kitchens because of cooking heat.
Proximity to the sea means faster corrosion of units, how do you select equipment?
We select units with high corrosion resistance against salt and moisture, and recommend stronger, more frequent maintenance than other areas.
Large buildings and complexes need very strong power, what do you recommend?
We carefully inspect main panel capacity and recommend wiring upgrades or secondary panels for high-capacity central systems.
