Design before you buy
HVAC design in Tabah
HVAC design in Tabah requires precise calculations because the district mixes modern villas with large glazed frontages alongside multi-storey residential blocks. We calculate the heat load for each space and choose the right system type before you buy 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 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
Tabah holds relatively modern apartment blocks alongside detached villas with wider outdoor spaces than the central zones. This mix means some units face direct sun on glazed facades while others sit sheltered by neighbouring buildings. Proper design accounts for these differences so you don't end up with oversized or undersized units that cool unevenly from room to room.
Tabah lies in North Jeddah, a relatively modern building district mixing villas and residential apartment blocks of varying sizes and designs.
Most villas in Tabah need a central or multi-zone system because of their larger floor area, while residential blocks rely on separate splits per flat.
The AC setup in Tabah
- 1
Central system for larger villas
Spacious Tabah villas typically need a single outdoor unit with ductwork distributing cooling evenly across multiple rooms.
- 2
Separate split per flat in blocks
Tabah's apartment blocks use separate splits, each flat with its own outdoor unit on the roof or external wall.
- 3
Multi-zone system for medium villas
Some medium villas need one outdoor unit with several separate indoor units for better temperature control across zones.
Before the visit
Before our visit in Tabah
- 1
Bring a floor plan or photos of the villa or flat
A clear floor plan showing room layout, windows and doors helps us calculate the heat load accurately before the visit.
- 2
Tell us about any current cooling issues
If you have an older unit and complain about uneven cooling or high bills, let us know these details before the visit.
- 3
Identify available outdoor unit locations
Confirm access to roof or external walls for the outdoor units and explain any planning constraints from the building design.
More districts for HVAC design
Other services in Tabah
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.
Villas here have large windows, how does this affect the design?
Large windows substantially increase the heat load, especially on west and south facades exposed to direct sun. In design, we calculate the glazing area and orientation and factor it into the load calculation to select the right capacity units.
Can you design AC systems for the apartment blocks in Tabah?
Yes, we design separate split systems per flat with heat load calculations for the indoor units and outdoor units on the building roof, and we plan the outdoor placement to avoid disturbing neighbours.
Hot air varies between rooms in my villa, how does design fix this?
Imbalance usually stems from poor planning. We calculate the heat load for each room individually and select the number and capacity of indoor units and duct lengths so cooling reaches all spaces evenly.
How do the building structure and exterior walls affect cooling needs?
Exterior walls absorb and transfer solar heat inward, and newer Tabah villas usually have good insulation while older ones may need stronger units. We inspect building materials and insulation as part of the heat load calculation.
