Describe what happens before booking
Record the conditions so the workshop can reproduce the problem. A symptom helps choose a test; it does not identify a failed part.
| What you notice | What to record |
|---|---|
| Warm air with normal airflow | Constant or intermittent; when it started. |
| Weak airflow | Whether changing fan speed changes the airflow. |
| Cooling changes with vehicle speed | Idle, traffic or open-road driving; approximate outside conditions. |
| Cooling returns, then stops again | Time before it changes and whether it happens on every trip. |
Sources: DENSO: systematic AC diagnosis and repair verification
Why a gas refill may not solve warm air
Refrigerant pressure alone does not establish the whole fault. DENSO explains that temperatures and live operating data also matter for electronically controlled compressors. A recharge machine cannot replace diagnosis.
If a compressor is proposed, ask which tests identify its failure and whether an underlying problem also needs repair. Otherwise, replacing the part may leave the original cause unresolved.
Confirm the refrigerant and compressor specification
An AC refill quote should identify the refrigerant and the manufacturer-specified charge, with the correct compressor oil where the work requires it. R134a and R1234yf are different refrigerants; they should not be mixed. The workshop should use the vehicle and compressor specifications rather than assume one gas or a universal oil suits every car.
Tell the team if your vehicle is hybrid or electric. An electrically driven compressor can require a different oil specification and suitable service equipment. Send the make, model, year and any recent AC-work details before booking. Active Auto confirms whether the particular system and work can be accepted.
Sources: DENSO: correct oil specification and separate refrigerants · DENSO: electric compressor oil and service equipment
Ask for the findings and a repair check
Ask the workshop to record the tests, results and reason for the proposed repair. A brief blast of cold air alone does not show that an intermittent or traffic-related fault has been resolved. The follow-up check should reproduce the original conditions where practical and use the vehicle’s applicable diagnostic procedure.
| What to ask for | Why it helps your decision |
|---|---|
| Relevant temperatures, pressures and operating data | A pressure reading alone may miss control or performance problems. Ask how the readings support the repair. |
| The test conditions | Record outside conditions and whether the car was idling or being driven, so results have useful context. |
| A check of the original symptom after repair | Confirm that the fault you reported was checked again, especially if cooling had stopped only in traffic or after part of a journey. |
Sources: DENSO: systematic AC diagnosis and repair verification · DENSO: temperatures and live data in AC diagnosis
What to approve in writing
The estimate should identify the diagnosed fault, proposed repair, refrigerant or parts where relevant, labour, outside work, exclusions and any follow-up test. Active Auto AC service starts from AED 100; that published floor is not the price of every diagnosis or repair.
When to stop using the AC or vehicle
Switch the AC off and seek advice if there is smoke, a burning smell, belt noise, fluid loss or an electrical concern. If the vehicle also overheats, stop safely and address the cooling-system warning rather than treating it as only an AC problem.
Arrange a car AC assessment in Dubai
Active Auto serves drivers across Dubai from its Al Quoz workshop. Send your make, model, year, airflow and cooling symptoms, and details of recent AC work. The team will confirm the assessment and whether the specific job can be accepted.
Use the AC booking link below to keep the service selected, or send the prepared WhatsApp message with your vehicle details. Pickup and drop-off can be discussed by arrangement; diagnosis and repair are workshop services.
Still Not Sure? Just Ask.
Send the make, model, year, symptom and any useful photos. The team will explain what needs checking and what to include in a quote for your car.
Frequently asked questions
Does warm air mean the AC only needs gas?
No. Low refrigerant can be one cause, but leaks, airflow, electrical control or component faults can produce similar symptoms. Test before authorising parts.
How much does Active Auto AC service cost?
AC service starts from AED 100. This is a starting price, not a fixed diagnostic, refill or compressor-replacement fee. The quote depends on the vehicle, findings and agreed work.
Can you diagnose AC from a WhatsApp message?
Your message helps the team prepare. Testing at the workshop is needed to identify the fault and recommend a repair.
Why is the AC colder while driving than at idle?
Several airflow, fan, refrigerant or component conditions can cause that pattern. Record it clearly and let the workshop test the system rather than guessing.
What should I ask before approving an AC compressor replacement?
Ask which tests support the diagnosis, whether an underlying fault also needs repair, what the written quote includes and how the workshop will confirm that cooling is restored.
Can the same AC refrigerant and oil be used in every car?
No. The refrigerant and oil must match the vehicle and compressor specifications. Different refrigerants should not be mixed, and electrically driven compressors can have specific oil and equipment requirements. Tell the workshop if the car is hybrid or electric before booking.
Does a short burst of cold air prove the AC repair is complete?
No. Ask for a recorded check of the original complaint under comparable conditions and the relevant test results. An intermittent fault may not appear during a brief stationary test.