Car AC Expansion Valve Replacement Cost in UAE (2026)
The AC expansion valve (also called the TXV — Thermal Expansion Valve, or orifice tube on some systems) controls the flow of refrigerant into the evaporator core. It drops refrigerant pressure from the high-pressure liquid side of the AC system to the low-pressure vapour side, causing the refrigerant to cool rapidly and absorb heat from the cabin air as it evaporates. UAE AC expansion valves must operate under extreme conditions — high ambient temperatures increase system pressures significantly, and the valve must regulate refrigerant flow precisely across a wide range of UAE conditions from cool winter mornings to 48-degree summer afternoons.
AC Expansion Valve Replacement Costs in UAE (2026)
| Service | Cost (AED) |
|---|---|
| Expansion valve (aftermarket) | 60-250 |
| Expansion valve (OEM) | 100-500 |
| Labour (valve replacement) | 150-400 |
| Refrigerant recovery and recharge | 100-200 |
| Total expansion valve service | 400-1,200 |
Expansion Valve Faults in UAE
A failed expansion valve causes one of two AC symptoms in UAE: either the AC is too cold initially but then stops cooling as the evaporator freezes over (valve stuck open, allowing too much refrigerant), or the AC never cools properly regardless of running time (valve stuck closed, restricting refrigerant flow to the evaporator). Both symptoms are diagnosed by a UAE garage with manifold gauges checking the AC system pressures. The expansion valve requires the refrigerant to be recovered before removal, and the system must be evacuated, the valve replaced, and the system recharged after fitting. Use GarageBuddy to find UAE garages for AC expansion valve diagnosis and replacement.