OPOExpert Air Conditioning
← Back to service overviewAC REPAIR

AC repair service

If your AC suddenly stops cooling, freezes up, makes strange noises, or has a water leakage problem, our experienced repair team provides professional inspections to identify the cause of the fault. We will give a clear quote before any repair, so you can decide whether to proceed only after understanding the situation

WhatsApp Enquiry: RepairView inspection fees and quotation arrangement
SERVICE SCOPE

Common repair questions

Provide information based on AC performance so we can arrange an inspection.

  1. 01
    AC not coolingIt may be a refrigerant leak, compressor fault, or dust buildup on the condenser
  2. 02
    AC icing and frostIt may be related to insufficient airflow, a clogged dust filter, or a problem with the cooling system. First stop cooling, do not knock the ice off; if the issue continues, please provide photos so an inspection can be arranged
  3. 03
    Indoor unit leaking waterIt may involve a blocked drain pipe, drain pan slope issue, or a parts problem. A blockage may improve after cleaning; installation or part faults require separate inspection and repair
  4. 04
    Noise during operationIt may involve the motor, fan blade, or mounting parts; inspection is required based on the actual condition of the unit
  5. 05
    Cannot power on and trips the breakerIt may be related to an electrical fault or overload; if the breaker trips, stop using it, do not keep switching it back on, and arrange for a technician to inspect it
BOOKING & PAYMENT

Repair quotation process

As repair situations and required parts vary, we use on-site inspection and condition-based quotations.

Inspection/call-out feeHK$500Same charge item

After the technician visits for an inspection, if the customer does not proceed with the repair or does not accept the repair quotation, a fixed HK$500 inspection/attendance fee will be charged; this is a single charge and is not split into two separate charges.

If you agree to proceed with repairs, HK$500 can be deducted from the repair fee; please check the deduction and amount payable when confirming the quotation.

If it is not safe to carry out the work on site, the on-site charge terms below will apply.

  1. 01Contact us on WhatsApp and provide the air conditioner condition.
  2. 02Arrange for a technician to visit for inspection and diagnosis.
  3. 03After identifying the problem, the technician will provide an immediate repair plan and quote.
  4. 04Repair work will only start after the customer agrees to the quotation.
  5. 05Test the relevant functions after completion and explain the repairs carried out.

Our repair service does not include a warranty; the quotation is valid for 30 days. See the service charges and notes below for details.

WhatsApp Enquiry: RepairNeed a technician inspection? Please first provide the fault details and AC model, and attach photos or a short video.

Please provide the model, quantity, district, issue, and preferred date. If you have photos, please send them too for a more accurate quotation.

PARTS + BASIC INSTALLATION

AC parts (including basic installation)

Below is the reference price for parts plus basic installation, not the standalone part price. Stock availability and the final price for the specified model must be confirmed first; prices may vary by model. The scope of basic installation and extra works is subject to the confirmed quotation, and unconfirmed items do not mean stock has been reserved or a booking has been completed.

  • Air conditioner circuit board Product Image

    Air conditioner circuit board

    Including basic installation reference price
    HK$1,600Per unit
    Model and stock must be checked first
  • Air conditioner capacitor Product Image

    Air conditioner capacitor

    Including basic installation reference price
    HK$800Per unit
    Model and stock must be checked first
  • Air conditioner motor (Style 1) Product Image
    Style 1
    Air conditioner motor (Style 2) Product Image
    Style 2

    Air conditioner motor

    Including basic installation reference price
    HK$2,700Per unit
    Model and stock must be checked first
  • Air conditioner compressor Product Image

    Air conditioner compressor

    Including basic installation reference price
    HK$3,600Per unit
    Model and stock must be checked first
  • Air conditioner water pump Product Image

    Air conditioner water pump

    Including basic installation reference price
    HK$1,600Per unit
    Model and stock must be checked first
  • AC sensor Product Image

    AC sensor

    Including basic installation reference price
    HK$2,800Per unit
    Model and stock must be checked first
WhatsApp Enquiry: Parts and Installation

ADD-ON SERVICES

AC add-on services

Below are the charges for each AC add-on service; please provide the model, quantity, location and photos of the issue first. Confirm the scope of work, applicable parts and extra work charges before proceeding, and work will only start after approval.

  • Refrigerant top-up Illustration

    Refrigerant top-up

    Per unit
    HK$1,000–HK$1,800Per unit

    Confirm the quantity by model, refrigerant type and actual need; first check the cause of poor cooling, as refrigerant top-up is not needed in every case.

    Choosing Daikin refrigerant costs an extra HK$100 per unit; leakage repair and other works are to be confirmed separately.

  • Drain clearing using a Worx wet vacuum Illustration

    Drain clearing using a Worx wet vacuum

    1 unit
    HK$250Per unit
    2 unit(s) or more
    HK$200Per unit

    Use a vacuum machine to deal with drainage issues according to the drain pipe and the level of blockage. AC cleaning service already includes clearing the drain pipe with a high-pressure water jet, so this is not needed every time as an extra item.

    The drain pipe service includes 3 months of maintenance; the cause of the leak must be verified and the applicable scope confirmed at the time of booking. This does not mean that all causes of leakage are covered or that it is guaranteed never to leak again for one year.

  • Outdoor unit cleaning Illustration

    Outdoor unit cleaning

    1 unit
    HK$400Per unit
    2 unit(s) or more
    HK$300Per unit

    Removing dust from the outdoor condenser helps maintain heat dissipation; long-term dust build-up may affect cooling and increase the load on the equipment.

    Not applicable to window units; the safe work area and accessible range must be confirmed first. Extra works such as scaffolding will be quoted separately.

  • Kärcher high-temperature steam cleaning Illustration

    Kärcher high-temperature steam cleaning

    1 unit
    HK$300Per unit
    2 unit(s) or more
    HK$200Per unit

    Use high-temperature steam to assist in cleaning dirt and removing odors according to the equipment and material suitability; it does not replace the original dismantling and washing process.

    Before work starts, confirm the applicable parts and heat resistance; results depend on dirt level, contact time and site conditions.

  • SafePRO® 180-day long-lasting disinfecting and antibacterial coating Illustration

    SafePRO® 180-day long-lasting disinfecting and antibacterial coating

    1 unit
    HK$250Per unit
    2 unit(s) or more
    HK$200Per unit

    After cleaning, apply the coating according to the surface material and product instructions. Confirm suitability and usage precautions before application.

    “180 Days” is a marking in the product name. Actual performance and duration must be based on tests and usage conditions for the applicable product, and there is no guarantee of eliminating any specific virus or that it is harmless to all people and pets.

  • Plastic drain pan and hose replacement Illustration

    Plastic drain pan and hose replacement

    1 unit
    HK$250Per unit
    2 unit(s) or more
    HK$200Per unit

    If the drain pan or drain hose is aged, cracked, or cannot be cleaned and cleared, it should be checked first to confirm whether replacement is needed.

    First check the model, part dimensions and workable location; the images are product illustrations, and the actual parts are matched to the model.

WhatsApp Enquiry: Value-added Services

From inspection to repair

First know how it will be handled

Repairs will only begin after the customer agrees to the quotation; if additional items or parts are needed, we will explain and quote separately first.

Back to inspection fee and quotation arrangement ↑
Repair process05steps

  1. Provide fault details

    Explain the air conditioner condition via WhatsApp, with the model and relevant photos or videos.

  2. On-site inspection

    Arrange for a technician to visit for inspection and fault diagnosis.

  3. Explain the plan and quotation

    We will identify the problem and provide a repair solution and quotation.

  4. Customer confirmed

    Repair work will only start after the customer agrees to the quotation.

  5. Post-completion testing

    Test the relevant functions after completion and explain the repairs carried out.

Quotation first, repair later

Repairs, parts replacement, refrigerant top-up, cleaning and steam treatment will be arranged according to the confirmed quotation; the quotation is valid for 30 days.

Real repair cases

Inspection and repair service cases

02 CASES
Air conditioner inspection and repair (Location: Saizeriya Italian Restaurant)Saizeriya Italian Restaurant ·Air conditionerAir Conditioner Inspection and RepairWatch on-site work video Air conditioner inspection (Location: Methodist School)Methodist School・Air conditioners and split-type air conditionersAir Conditioner Inspection and CleaningWatch on-site work video
View all service cases →

SERVICE SCOPE

Service coverage and booking notes

First understand the inspection scope, repair limits and on-site arrangements.

01

Inspection and quotation scope

First understand the fault, then confirm the repair items

View the remaining inspection and quotation scope
  • We will inspect the cause of the fault on-site and explain the repair plan and quotation according to the actual condition of the air conditioner; repair will only start after the customer agrees.
  • Repairs, parts replacement, refrigerant top-up, cleaning, and steam treatment are arranged according to the confirmed quotation; they are not included in the inspection or call-out fee.
  • The quote states the repair items and costs for this job. If other faults are found during inspection or work, requiring extra parts or repair items, we will explain the situation first and provide a separate quote. Extra work will only proceed after the customer agrees.
02

Repairs carry no warranty and quotations have no validity period

Repairs carry no warranty; quotation valid for 30 days

Other maintenance and quotation rules (quote valid for 30 days)
  • Our repair service does not include a warranty, including repair parts and workmanship. Please understand the repair scope and fees before accepting the quotation.
  • The one-year installation warranty, the 90-day warranty for cleaning, and the manufacturer’s original warranty are different service arrangements and cannot be directly treated as the warranty for this repair.
  • When confirming the quotation, please check the parts to be repaired, required parts, labour charges, and any inspection/visit fee waiver arrangements.
  • The quotation is valid for 30 days. If it exceeds the validity period, please contact us to re-confirm the price and work arrangement before confirming the service. The re-confirmed quotation shall prevail.
03

What is the difference between cleaning and repair?

Cleaning and fault repair are assessed according to different causes

View the difference between cleaning and repair
  • Refrigerant leakage, broken pipes or connection issues, motor, fan and control part faults need separate inspection and repair. Cleaning cannot replace repair.
  • If the drain pan or drain pipe has aged and cracked, there is an installation slope issue, or leakage continues after clearing, the cause must be confirmed first and quoted separately.
  • Dust buildup or blockage can be assessed for improvement through cleaning; however, cleaning does not guarantee that cooling, airflow or water leakage will be fully restored.
04

Preparation and photos before booking

Provide the model, condition and installation location for assessment

View booking details and safety notes
  • When booking, provide the model, quantity, nameplate, full view of the unit and installation location; if there is a fault, include photos of rust or the leak location, or a short fault video.
  • Photograph the space under and around the unit, remove clutter, documents and items that can easily be damaged by moisture, and reserve enough space for the technician, tools and waterproof protection. Whether the space is sufficient must be assessed on site; there is no standard square footage.
  • Explain when the fault occurred, the error code, and whether it has been repaired before; if it is a concealed ceiling unit, also provide photos of the access panel, dimensions, and installation height.
  • If there is a tripped breaker, unusual noise or leaking, stop using it first and do not repeatedly restart it to test; there is no need to dismantle parts or handle wires yourself.
05

Inspection/call-out fee and repair deduction

After the technician visits for an inspection, if the customer does not proceed with the repair or does not accept the repair quotation, a fixed HK$500 inspection/attendance fee will be charged; this is a single charge and is not split into two separate charges.

View other on-site charge situations
  • If you agree to proceed with repairs, HK$500 can be deducted from the repair fee; please check the deduction and amount payable when confirming the quotation.
  • If it is not safe to carry out the work on site, the on-site charge terms below will apply.
06

High-mounted units, access hatches and equipment constraints

If the unit is too high, the access panel is too small, the body is heavily rusted, or it cannot operate normally, please tell us in advance when booking and provide photos and measurements so we can assess whether the work can be done.

View on-site assessment arrangement
  • The actual workable scope must be confirmed on site; if safe work cannot be carried out, we will not force dismantling, cleaning, or repairs. If additional arrangements or repairs are needed, they will be explained and quoted first, and only carried out after approval.
How do I report after-sales issues?

If there is a problem after service, please contact customer service via WhatsApp, phone or email and provide the following information so we can verify the service and the cause of the issue.

  • Service date, booking name and contact number.
  • Service address, and the unit, model or service item with the issue.
  • When did the problem occur, what exactly happened, and provide clear photos or short videos.
  • If you have a quotation, payment record or service receipt, please provide them as well.

Customer service will first check the records and the cause of the problem, then confirm whether maintenance applies, how it will be followed up, and any possible charges; reporting a problem does not mean all faults will be repaired free of charge.

View warranty and after-sales notes →

Booking, payment and rescheduling

Payment, rescheduling and cancellation arrangements

01

Payment methods, deposit and balance

  • Bank transfer, FPS, cash, PayMe, and Alipay are accepted.
  • A deposit of HK$500 is required for cleaning and repair bookings.
  • The deposit will be deducted from the total fee, and the balance will be paid upon completion of the service or work. The deposit will not be added on top of the total price.
02

Reschedule: free if changed at least 24 hours in advance

  • For cleaning, repair, and installation, you may reschedule free of charge if you notify us at least 24 hours before the appointment.
  • If notice is less than 24 hours, or if the appointment is rescheduled after the technician has arrived: cleaning and repair rescheduling fee of HK$300 will be charged.
  • Please contact customer service via WhatsApp to reconfirm the service date and time.
  • The rescheduling fee, cancellation fee, and attendance fee are separate arrangements. If rescheduling is requested after arrival, it will be handled under the above rescheduling fee and will not be added to the HK$500 attendance fee.
03

Cancellation and refund for no-show

  • If the booking is cancelled directly before the technician arrives, a HK$300 cancellation fee will be charged for all services, regardless of how far in advance notice is given; free rescheduling in advance does not mean free cancellation.
  • After cancellation, HK$300 cancellation fee will be deducted from the paid deposit, and the balance will be refunded.
  • Refunds can be made by bank transfer, FPS, cash, PayMe or Alipay. Customer service will confirm the actual refund method and amount.

For example, if a cleaning deposit of HK$500 has been paid and the appointment is cancelled before the technician arrives, HK$300 cancellation fee will be deducted and HK$200 will be refunded.

View full payment and booking terms →

AirAir conditioning repair and inspection FAQ

Understand the applicable scope, charges and arrangements before booking

Can the price for air conditioning repair be determined from photos alone?

Photos, model information, and a fault description can help with a preliminary understanding, but they cannot replace an on-site diagnosis. After inspection, the technician will explain the repair plan and quotation. Work will only begin after the customer agrees. Any additional items or parts will be explained and quoted separately in advance.

How is the HK$500 inspection/visit fee charged?

After the technician visits for an inspection, if the customer does not proceed with the repair or does not accept the repair quotation, a fixed HK$500 inspection/attendance fee will be charged; this is a single charge and is not charged separately twice. If repair is carried out, HK$500 can be deducted from the repair fee; please confirm the amount payable when approving the quotation.

Does air conditioning repair include a warranty?

Our repair service does not include a warranty, including repair parts and workmanship. This is different from the 90-day cleaning warranty and the one-year warranty for general installation. Please confirm the repair scope, fees and service limitations before accepting the quotation.

What should you do when the air conditioner trips the breaker, smells burnt, or makes unusual noises?

Stop using the AC first. Do not restart it repeatedly, force a reset, or open electrical parts yourself. Do not lean out to photograph the outdoor unit. If safe, provide the model, when the problem started and any visible warning signs, then arrange a professional inspection.

View other service and booking FAQs →

REPAIR ENQUIRY

Enquire about air conditioner repair and on-site inspection

Please send us the fault details, AC model, and relevant photos or short videos on WhatsApp so we can understand the issue and arrange a follow-up inspection.

WhatsApp Enquiry: RepairBook Online

Please provide the model, quantity, district, issue, and preferred date. If you have photos, please send them too for a more accurate quotation.