We provide professional Ductwork Repair & Sealing across Abha, Khamis Mushait and Jazan. Our specialist team is trained on the specific requirements of Asir Region and Jazan climates.
Abha at 2,200m elevation, Khamis Mushait at peak summer heat, and Jazan with coastal humidity — each city has its own requirements. Our experience across all three cities ensures the optimal solution for your location.
Why RawaCool?
- Local teams in Abha, Khamis Mushait and Jazan — fast response
- Trained and qualified technicians for all types and brands
- Genuine parts in stock — no waiting
- Documented warranty on all our work
- Competitive transparent pricing — no surprises
Service Areas
We cover all districts of Abha, Khamis Mushait and Jazan and surrounding areas.
Ductwork Repair & Sealing — Technical Coverage
Ductwork problems are more varied than they appear. This guide covers the main repair types we perform across Abha, Khamis Mushait and Jazan.
Duct Leak Sealing
Leakage is the most common and most neglected duct problem. 20–30% of cooled air is wasted in faulty ducts before reaching rooms. We seal leaks with specialist duct sealant or certified aluminium foil tape — not regular plastic tape that degrades in regional heat. A Duct Pressure Test identifies all leaks precisely before any sealing begins.
Static Pressure Testing
Elevated static pressure inside the duct network indicates obstruction or poor design. Measuring pressure with a Manometer at specific points identifies where excess resistance occurs — it may be a blocked filter, closed register, or sharp duct bend. In Abha and higher-elevation areas, lower atmospheric pressure changes normal static pressure values and requires corrected measurement baselines.
Duct Boot Sealing
The boot is the connection between the duct and the ceiling or wall register. These connections lose their seal over time and with heat cycling. In older homes in Abha and Khamis Mushait, leaky boots are a source of dust infiltration and cooling loss. We reseal them with heat-rated sealant rated for the region's temperature extremes.
Sheet Metal Ductwork Fabrication
Rigid metal ducts are the best-performing and longest-lasting type but require custom-fabricated pieces matching specific site dimensions. We fabricate on-site or in advance based on the design drawing. In Jazan, we use steel sheet with a corrosion-protection coating for any ducts exposed to coastal air.
Damper Installation and Maintenance
Dampers allow control of airflow volume per zone. Manual dampers in homes, motorised in commercial buildings. A damper stuck open or closed disrupts inter-room airflow balance. Motorised dampers need periodic electronic calibration to ensure accurate response to control signals.
Thermal Insulation of Ductwork
In Abha, the temperature differential between cooled air inside ducts (12–14°C) and ceiling-space air (35–45°C in summer) reaches 30°C. Uninsulated ducts gain enormous heat before the air reaches the room. We use Fiberglass insulation at minimum 50mm thickness in Abha, adjusted for the degree of thermal exposure of each duct run.
Plenum Box Design and Fabrication
The plenum box is the air chamber that distributes air from the unit to branch ducts. Incorrect design causes uneven air velocities and noise. We design and fabricate plenums to the correct engineering dimensions for the unit's capacity and the number and size of connected branch ducts.
Jump Ducts / Transfer Ducts
In well-sealed homes without a return air opening in every room, pressure builds up in closed rooms and causes imbalance. Jump ducts are small channels between rooms that allow air circulation without opening doors. We install them through walls or ceilings with half-open diffusers.
Attic / Ceiling Plenum Sealing
In buildings that use the ceiling cavity as a return air plenum, all walls and ceilings must be airtight. Any leak draws hot air from outside or the ceiling space into the system. In Jazan, hot humid outdoor air entering through a small leak destroys cooling efficiency entirely.
Acoustic Duct Lining
Duct noise usually comes from air velocity that is too high, or a vibrating damper. Internal acoustic duct liner reduces noise and simultaneously improves thermal insulation. We use it in offices and bedrooms where noise disruption matters.
Penetration Sealing
Every point where ducts pass through walls or ceilings is a potential air leak. Correct sealing with fire-rated and construction-approved materials prevents uncontrolled air movement and meets building safety requirements.