Questions before booking First check the FAQs

The time required varies by model, quantity, dust buildup, installation location, and work conditions, so the same time cannot be applied to every air conditioner. When enquiring, you can provide photos of the unit and its location so customer service can confirm the expected arrangement.

Please allow time for site protection, cleaning, tidying up and test running. If there is a required departure time or management restrictions on work, please raise them before confirming the booking.

Before cleaning, the technician will use protective covers and waterproof pads to protect the walls, furniture, and floor around the air conditioner. After the work is finished, the site will also be tidied up to keep the area as neat as possible.

Please first move away valuable items and movable clutter nearby, and inform us of any decorations or equipment that may be affected by water. Large furniture, special materials, and space restrictions should be confirmed in advance; work cannot be guaranteed to be directly possible in every environment.

High-temperature steam may be used on suitable parts and materials to help treat dirt; suitability must be assessed according to the equipment condition and the manufacturer's requirements, and not every part can accept high-temperature treatment. Steam treatment should not be understood as a guarantee to remove all bacteria or allergens, or to improve health.

High-temperature steam treatment for the AC is an add-on item, confirmed according to the current price list and the unit type. Steam treatment suitable for tumble dryers, ovens, dishwashers, cookers, fans and refrigerators is included in the basic cleaning price, but the suitability of parts and materials still needs to be confirmed.

Dust or blockage on the outdoor condenser may affect heat dissipation, but whether cleaning is needed should be assessed based on the unit condition, location, and whether the work can be carried out safely. Do not lean out of the window, climb up, or dismantle the equipment yourself to inspect it.

Basic cleaning for household and commercial air conditioners does not include the outdoor condenser. Please provide a full view of the outdoor unit location, model and issue details, and check the relevant add-on price list for scope and fees; high-level work, scaffolding or other extra work will be assessed separately.

Household window and split unit cleaning follows the current price list on this website; please provide the model, quantity, location and photos first. Commercial, appliance and fabric cleaning are confirmed according to the relevant items and conditions, and household air-conditioning prices do not apply directly.

Additional services, repairs and installation are quoted according to the actual situation. If extra work is needed, the scope and fee will be explained first, and work will only proceed after confirmation; enquiries or preliminary estimates do not mean all hidden faults have been confirmed.

Household window units and split units are priced according to the current price list. For example, 1 units HK$880, 10 units total HK$5,300, 15 units total HK$6,750. "From HK$450 per unit" is the average per-unit charge for the 15-unit offer, not the single-unit price, and not the automatic unit price for 11 to 14 units.

Multi-unit discounts apply only to the same housing estate or nearby estates, with service on the same day. Cross-household group bookings are quoted separately and do not directly follow the home multi-unit price. Please enquire according to the actual number of units, models and locations.

OPOExpert Air Conditioning offers group cleaning for split-type and window-type air conditioners. For a total of 25 units or more, prices start from HK$350 per unit. Service must be arranged in the same estate / nearby estate and on the same day; large units and add-on services will be quoted separately, and the actual fee must be confirmed by customer service. Not all group bookings are charged at HK$350 per unit.

Cross-household group bookings do not directly use the home multi-unit rate. Please provide each household’s address, model, the number of units per household and in total, and the date you want them cleaned on the same day, so customer service can confirm the quotation and on-site arrangement. Submitting information does not mean the booking is confirmed.

Suitable for AC cleaning, appliance cleaning, fabric and household cleaning, and repair inspections. This HK$500 rule does not apply to installation. After the technician arrives on site, if the customer cancels cleaning, refuses the cleaning or repair quotation, or the work cannot be carried out safely on site, a fixed HK$500 attendance fee will be charged according to the confirmed arrangement. Cancellations before arrival are handled as cancellation fees; if the customer only requests a reschedule after arrival, it will be handled as a rescheduling fee, and HK$300 and HK$500 will not be charged on top of each other. The HK$500 inspection/attendance fee for repairs is the same charge and is not split into two items; it may be deducted from the repair cost after agreeing to the repair, so please check the amount payable when confirming the quotation.

Enquire about TimesPlease provide the service item, model, brand and model number, quantity, district, current issue, preferred date, and photos of the unit and installation location. If you are not sure of the model, clear photos are fine first; for fabric items, size and material details are also needed.

Before cleaning, remove valuables and clutter near the work area, and inform the management office of any parking or access restrictions. Do not dismantle the unit yourself or climb to take photos; please confirm in advance whether large furniture needs to be moved.

A WhatsApp message is an enquiry only and does not mean the booking is confirmed. The service scope, fee, date and time must be confirmed with customer service, and then handled according to the relevant deposit arrangement.

Bank transfer, FPS, cash, PayMe, and Alipay are accepted. A deposit of HK$500 is required for cleaning and repair bookings. Installation bookings generally require a deposit of 50% of the project fee. The deposit will be deducted from the total cost, and the balance is paid upon completion of the service or work, with the deposit not added on top of the total price.

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 you reschedule only after the technician has arrived: a rescheduling fee of HK$300 applies to cleaning and repair. If notice is less than 24 hours, or if you reschedule only after the technician has arrived: installation will incur a rescheduling fee of 10% of the total order amount or HK$2,000, whichever is higher. Please contact customer service by WhatsApp to reconfirm the service date and time. The rescheduling fee is separate from cancellation fees and attendance fees. If rescheduling is requested after arrival, it will be handled under the above rescheduling fee and HK$500 attendance fee will not be added separately.

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.

Cancellation of installation with extra works fee: 20%; that is, HK$300 cancellation fee plus extra works fee: 20%.

For any AC fee already paid, the handling and refundable amount must be confirmed separately depending on whether the item has already been ordered; full refunds are not guaranteed.

After cancellation, the applicable cancellation fee will be deducted from the deposit already paid, and the balance will be refunded. For installation, the refundable amount will also be checked separately according to the above work fee and the air conditioner ordering status.

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.

The cleaning service includes a 90-day warranty for problems caused by the cleaning service; dripping and leakage cases must first have the cause verified and the applicable terms confirmed at booking, and not all cases qualify for free repair.

Please contact customer service and provide the service and problem details. First verify the records, the cause of the problem, and the terms confirmed at booking, then confirm the follow-up arrangement and any possible charges. The fact that a problem appears within 90 days does not guarantee that all faults will be repaired free of charge.

You may confirm with the technician that the site has been cleaned, the casing and visible parts have been restored, and then test the unit in a suitable mode, paying attention to airflow, operating sound and whether any new dripping occurs. Do not dismantle the unit yourself for acceptance checks.

If there was already insufficient cooling, dripping or strange noise before cleaning, it should be stated whether the problem has improved. Cleaning is not the same as full fault repair, and it does not guarantee that existing wear and tear will be eliminated; if anything abnormal is found after departure, record the time and symptoms and contact customer service.

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 the issue started, the specific situation, and clear photos or short videos. If available, please also provide quotations, payment records or service documents.

If there is a burning smell, smoke, a tripped breaker, severe abnormal noise, or water near electrical appliances, stop using the unit first and stay away from the dangerous area; do not restart the equipment just to film it. Customer service will confirm the next step based on the record and cause. Reporting a problem does not mean maintenance has been approved.

If damage is confirmed to have been caused by our staff during the air conditioner cleaning process, our company will bear the cost.

Please keep the service details and any safely accessible photos, and contact customer service as soon as possible to verify them. Existing wear, equipment faults, and other causes must be confirmed separately; do not automatically treat any post-service issue as caused by cleaning.

Poor cooling may be related to mode settings, restricted airflow, dust build-up, room load, refrigerant or component issues, so you cannot judge from feel alone whether cleaning or refrigerant replenishment is needed.

Please provide the model, when the problem started, the airflow condition, and recent cleaning and repair records. Dust buildup may be assessed for cleaning; if the unit does not operate, shows a fault light, freezes up or continues to behave abnormally, inspection is required depending on the situation. If there is a burning smell, smoke or tripping, stop using it first; the scope of inspection and repair will be confirmed separately.

Dripping may involve drainage blockage, the water collection point, installation slope, pipe insulation, ice formation or other faults. It cannot simply be described as dirt blocking the drain pipe.

Air conditioner cleaning includes clearing the drain pipe, but the actual scope must still be confirmed on site. If the cause is damage or an installation problem, cleaning may not solve it. Record the location and timing of the dripping. If water is near electrical appliances or the situation is serious, stop using the unit first. Do not disassemble the unit or poke into the pipe yourself.

HK$500 is the same inspection/visit fee, not the fixed total repair cost. It is still charged even if no repair is carried out; if you agree to repair, it can be deducted from the repair fee. Repairs are quoted based on the fault and scope of work, and there is no warranty for repair services.

The installation fee must be confirmed according to conditions such as pipe length, indoor and outdoor locations, and whether scaffolding is required. This includes basic installation and one year of installation warranty, but does not include running a new power line from the main switch to the unit. The quotation is valid for 30 days; if the scope of work changes, the quotation will be updated first and work will only proceed after approval.

Please provide the model, indoor and outdoor positions, and the existing piping and power supply details so the basic installation and any separately quoted works can be confirmed. Do not test the wiring or climb up to inspect it yourself; an enquiry or preliminary advice does not mean the work scope has already been confirmed.

For commercial AC cleaning, you may enquire about invoice and cleaning certificate arrangements as needed. If your company or management office has a specified format, addressee or required information, please provide the requirements before booking so we can confirm. We do not guarantee that every specified document can be provided directly.

You may enquire about monthly, quarterly, semi-annual, or yearly regular arrangements. The number of inspections and deep cleans, unit type, work scope, shutdown, and site access arrangements must be confirmed separately; regular plans are quoted separately.

Commercial air conditioning prices are not directly based on residential rates. Please provide the type and number of units, their locations, business hours and management requirements; whether parts, repairs, outdoor heat exchangers and other items are included must be confirmed based on the actual plan.

Home cleaning includes washing machines, dryers, bathroom heaters, ovens, dishwashers, cookers, fans and fridges. You may also enquire about sofa fabric, floor and bathtub cleaning. Each item has different cleaning methods, scope and prices, and should not all be treated as the same service.

Items already listed in the price list will be confirmed according to the current charges and quantity conditions; the actual model, size, material, location or additional work still needs to be checked. Please provide photos and the items to be cleaned, and do not dismantle the equipment yourself in preparation.

For sofas, mattresses and fabric curtains, please first provide full-view photos, dimensions, material labels and close-up photos of stains so we can assess the suitable cleaning method and scope. Leather, special coatings, and materials that are not water-resistant or heat-resistant cannot be treated using standard fabric procedures.

Cleaning results are affected by the type of stain, how long it has been there, the material and existing wear. Complete removal of stains, discolouration or restoration to original condition cannot be guaranteed. Bundle pricing and quantity conditions must also be checked against size and material; average package prices should not be treated as fixed prices for all products.