Central ducted AC installation is a significant project — higher cost than split, but when properly designed and executed it provides whole-home comfort from one quiet, ceiling-concealed unit.
Central AC Project Stages
1. Engineering Site Visit and Load Calculation
We conduct a free engineering visit before any purchase. We document every room, measure area and ceiling height, and calculate the heat load for each zone. In Abha we add the altitude factor (+10%) and the seasonal dual-use requirement (cooling and heating).
2. Ductwork Design
The heart of the project. Incorrect design means permanently unbalanced room temperatures. We calculate the correct air volume for each room based on its size and heat load. Dimensions, bends and damper positions are all engineered, not estimated.
3. Selecting the Unit at the Correct Capacity
The air handler is selected based on the total calculated load. In Khamis Mushait we add 20% for summer load. In Jazan, 25% for humidity load. An undersized unit runs continuously; an oversized one fails to remove adequate moisture.
4. Duct Installation with Mandatory Thermal Insulation
In Abha, the ceiling cavity reaches 40–45°C in summer while cooled air inside ducts is 12–14°C — a 30°C differential causing severe condensation and heat gain in uninsulated ducts. We use Fiberglass insulation at minimum 50mm thickness.
5. Air Balancing After Installation
We measure actual airflow at each register with an Anemometer and adjust dampers until air is distributed in the correct proportions. This step is frequently skipped by other contractors — it is the primary reason for room temperature imbalance complaints.
Expected Project Duration
| Home Size | Expected Duration |
|---|---|
| 3 rooms (small villa) | 2–3 days |
| 5–6 rooms (mid villa) | 3–5 days |
| 8+ rooms (large villa) | 5–8 days |