Cleaner Air Conditioning
Comfort You Can Feel
From inspection, dismantling and cleaning to clearing the drain pipe, we handle air conditioning needs for homes, offices and shops. Clear pricing—understand the situation first, then arrange the right service

Split-type AC cleaning photosWatch the split-type air conditioner cleaning process
Real photos of window unit cleaningWatch the window-type air conditioner cleaning processNeed a cleaning, or do you need the problem fixed?
Once the need is clear, communication becomes more direct. From everyday domestic maintenance to multiple AC units at commercial sites, we provide the appropriate approach
Residential AC cleaning
Suitable for window and split AC units. Includes a full inspection, high-pressure water jet cleaning, and drain pipe clearing; outdoor condenser not included
Learn about the service detailsCommercial AC cleaning
Suitable for offices, shops and restaurants. Supports four-way cassette split AC, central air conditioning and slim ducted split AC; multi-unit discounts and regular maintenance are available
View commercial pricingRepair and installation
If there is water leakage, no cooling, unusual noise, or a new installation, please provide photos or video first and ask for a quote based on the actual environment
Learn about the service detailsOther home cleaning
Deep cleaning for washing machines, range hoods, bathroom exhaust heaters, fabric sofas, etc. Check the service item for pricing
Learn about the service detailsTake a close look first
Book with confidence again
Residential window and split-type unit cleaning is subject to the current price list on this website. The total charge for the listed number of units is shown below; the average price of HK$450 per unit applies only to the 15-unit discount and is not a single-unit price.
View full services and chargesResidential AC cleaning | window units and split-type unitsCharges (HK$)
The multi-unit offer requires the same estate / nearby estates and service on the same day; cross-household group purchases are quoted separately and do not directly apply the residential multi-unit price.
Cleaning includes a full inspection, deep cleaning with a pressure washer, and clearing the drain pipe, but excludes the outdoor condenser.
Other models, additional work, repairs and installation are quoted separately, and any extra charges will be confirmed first.
Please confirm the scope covered by the 90-day maintenance with customer service before booking.
Suitable for air conditioners of all major brands
The following common brands are covered; for specific models and service scope, please send photos first for enquiry
See the cleaning process
Cleaning for residential window and split-type units will be arranged according to the unit type and site conditions. The main steps include:
- Check unit condition
- Dismantle and clean parts
- High-pressure cleaning
- Clear the drain pipe
Residential cleaning does not include the outdoor condenser; the exact scope of service is confirmed according to the unit type and site conditions
Split AC cleaning processWatch the split-type air conditioner cleaning process
Window-type air conditioner cleaning processWatch the window-type air conditioner cleaning process View the 9 major service process
From pre-cleaning inspection and waterproof protection to post-cleaning acceptance, below are our 9 major service steps. Dismantling and cleaning details will be arranged according to the model and site conditions.
Pre-cleaning inspection and testing
Before cleaning the AC, inspect the unit and carry out a test.
Peripheral waterproof protection
Before cleaning, waterproof the area around the AC unit.
Remove and clean parts
Use professional tools to remove the fan blade, dust filter, and front cover.
Thorough cleaning of removed parts
Thoroughly clean the removed fan blade, dust filter and cover.
Cleaning the refrigerant copper pipes
Spray a high-concentration cleaning agent onto the air conditioner to clean the refrigerant copper pipes.
High-pressure drain outlet cleaning
Use a high-pressure water spray to clean the air conditioner drain outlet for the best cleaning result.
Wipe dry and reinstall
After cleaning, wipe dry the AC components and reinstall them.
Clean up the site
After cleaning the air conditioner, the site will be tidied up.
Customer inspection and testing
Notify the customer to inspect the air conditioner and carry out testing.
Real service cases
All service cases
AC installation・Mont Vert, Ma On ShanSplit-type AC installationWatch case study video
Air Conditioner Inspection and Repair・Saizeriya Italian RestaurantAir Conditioner Inspection and RepairWatch case study video
Commercial AC cleaning・Caritas Community Centre - Caine RoadFour-way cassette split AC cleaning processWatch case study video
See what customers say, directly
Customer WhatsApp message excerpt, sharing cleaning details and service experience. Tap the image to open the original and zoom in
Brand presence
From the Weekly Economic column to years of outdoor advertising, learn about OPOExpert Group
Partners
Start with one photo
No need to guess
Want to know which service is suitable? Take photos of the AC model, quantity and problem locations, and send them to us via WhatsApp for a first review
Photo and description
Take photos of the AC exterior, unit location, and any water leakage or odour issues
Learn more · Quote
Customer service will make a preliminary assessment based on the information you provide; cleaning, repair and installation are handled separately
Arrange · On-site
After confirming the service details, we will arrange a time. Please ask before booking about the cleaning scope and maintenance details
What happens after cleaning?
Confirm the quotation first
Residential window and split-type unit cleaning is priced according to the published price list and number of units; for repairs, installation, or additional work, we will first assess from photos, then quote based on the unit type and site conditions. If any new work or charges are required, they will be confirmed before proceeding.
90-day Cleaning Maintenance
The cleaning service includes a 90-day warranty, covering issues caused by the cleaning service. If there is dripping or leakage after cleaning, please provide your booking details and the issue to customer service for follow-up. Whether it is applicable and how it will be handled depends on verification of the cause and the terms confirmed at booking. Not all dripping or leakage cases are guaranteed free repair.
Judge it yourself first
Then decide whether to call a technician
From common faults to daily maintenance, a few practical articles help you understand your air conditioner first
AC not cold enough? 5 common causes and solutions
It may not be a faulty unit. Start by checking the dust filter, mode setting and dust buildup inside the unit
Read full article Model selection referenceSplit-type vs window units: how to choose based on installation, noise, and maintenance
Compare the two AC units from the room, installation, energy label and future maintenance perspective
Read full article Cleaning knowledgeHigh-pressure AC cleaning: cleaning scope, protection and limits of results
Learn about the deep-cleaning process, safety protection and issues that still require repair
Read full articleAC cleaning FAQ
Price, cleaning scope, maintenance and group-buy arrangements: understand them before booking
How much is home AC cleaning? What are the conditions for "from HK$450 per unit"?
For home window and split AC cleaning, please refer to the current price list on this website. For example, 1 unit(s) for HK$880, 2 unit(s) total HK$1,400, 10 unit(s) total HK$5,300. "From HK$450 per unit" applies only to the 15-unit promotion, total HK$6,750, and is not a single-unit charge. Multi-unit discounts require the same housing estate or nearby estates and service on the same day; cross-household group bookings are quoted separately and do not directly use the home multi-unit rate. Additional services and other work are quoted separately and will be confirmed before booking.
View residential AC cleaning pricesWhat does AC cleaning include? Does it include the outdoor condenser?
Home window and split AC cleaning includes a full inspection, deep cleaning with a high-pressure water jet, and drain pipe clearing. The outdoor condenser is not included. The exact scope depends on the model and site conditions; if you need cleaning for the outdoor condenser or other extra work, please ask about feasibility and charges before booking.
Learn about home cleaning scope and extra servicesHow long does it take to clean one window or split AC?
For a typical home window or split AC, cleaning usually takes about 45 to 60 minutes. Actual time depends on the level of dirt, installation location and unit condition; if the unit is harder to access or several units are cleaned at once, please provide photos and the number of units before booking so we can confirm the schedule.
Read cleaning and booking FAQsIf the AC is leaking water or not cooling enough, should I clean it first or have it checked for repair?
First, identify the cause before deciding between cleaning or repair. If the problem is caused by dust buildup inside the unit or a blocked drain pipe, cleaning may help. If refrigerant is leaking or parts are damaged, repair may be needed. Please provide the model, problem details, and photos or video first; water leakage or insufficient cooling alone does not guarantee that cleaning will solve the issue.
Learn about AC fault inspection and repairWhat is included in 90 days of AC cleaning maintenance? How is water leakage followed up after cleaning?
The cleaning service includes a 90-day warranty, covering issues caused by the cleaning service. If there is dripping or leakage after cleaning, please provide your booking details and the issue to customer service for follow-up. Whether it is applicable and how it will be handled depends on verification of the cause and the terms confirmed at booking. Not all dripping or leakage cases are guaranteed free repair.
Read cleaning, maintenance and aftercare FAQsCan residents of the same estate / nearby estates join together for group AC cleaning?
Yes. OPOExpert Air Conditioning's group cleaning for split and window AC units starts from 25 units in total, at a low of HK$350 per unit. Service must be arranged for the same estate or nearby estates, on the same day; large units and additional services are quoted separately. The actual fee must be confirmed by customer service, and not all group bookings are charged at HK$350 per unit. Cross-household bookings do not directly use the home multi-unit rate.
View group-buy prices, eligibility and enquiriesAC cleaning, repair or installation?
Select the service you need, then WhatsApp us for pricing and arrangements
Not sure of the model? You can WhatsApp us a photo.
Service area
- Central and Western
- Wan Chai
- Eastern
- Southern
- Yau Tsim Mong
- Sham Shui Po
- Kowloon City
- Wong Tai Sin
- Kwun Tong
- Kwai Tsing
- Tsuen Wan
- Tuen Mun
- Yuen Long
- North
- Tai Po
- Sha Tin
- Sai Kung
- Islands



























