The air conditioner isn’t cold enough, has a bad smell, leaks water, or causes nasal allergies?
95% of the time, it’s because the air conditioner hasn’t been cleaned for too long — it’s too dirty.
Why should you regularly clean your air conditioner and dehumidifier?

Whenever you turn on the air conditioner, the indoor air quality is directly affected by the cold air it blows out. In fact, how clean the air is depends largely on when you last cleaned your unit.
Unclean air conditioners can contain over 6 million bacteria.
Research shows that the bacteria count inside an air conditioner can reach up to six million — twice as dirty as raw meat from the market. If your air conditioner has not been professionally cleaned, a musty smell is a clear sign of mold growth. The bacteria and mold inside are then circulated throughout the room with the airflow, and long-term exposure can trigger allergies, pneumonia, or even Legionnaires’ disease.
Washed the filter but still smells bad?
Although inverter air conditioners are known for their energy efficiency, they dehumidify less effectively during low-power operation. This leaves moisture inside the unit, creating an ideal environment for mold. Even if you clean the filter regularly, deep internal buildup may still cause unpleasant odors and reduce cooling performance. Attempting to clean the inner components yourself could damage the machine, so it’s best to leave it to a professional air conditioner cleaning service.
Johnson Group Air Conditioner and Dehumidifier Cleaning Service
Johnson Group provides transparent pricing based on air conditioner models, following a standardized deep-cleaning procedure that includes full dismantling, eco-friendly cleaning agents, and an anti-mold coating. Our service removes up to 99% of mold and bacteria, instantly restoring clean air and cooling efficiency so you can enjoy a fresh, comfortable home environment.
70 Years of Expertise and Assurance
Our cleaning team has years of hands-on experience and undergoes technical training to follow our 7-step professional cleaning procedure. We serve both residential and commercial clients across Hong Kong and have earned strong customer trust. Whether it’s a split-type, window-type, ducted, or ceiling-concealed air conditioner, we offer customized cleaning and sanitizing solutions.
Comprehensive Mould Removal and Prevention
After cleaning, we apply AerisGuard™, an anti-bacterial and anti-mold coating certified by the U.S. Environmental Protection Agency (EPA). This coating effectively inhibits the growth of bacteria and mold, providing long-lasting protection for at least 12 months, allowing our customers to enjoy peace of mind for the long term.
The Gentlest, Greenest Cleaning Solution in the Industry
We prioritize eco-friendly materials, using industrial-grade equipment and natural, plant-based cleaning agents that eliminate 99.99% of bacteria and viruses. Our cleaning solutions are safe for humans and the environment, making them especially suitable for households with children and pets.

Limited-Time Add-on Offer
From now on, book our Air Conditioner Cleaning to enjoy exclusive limited-time add-on deals on Yohome appliances!
- Yohome Dual-Core Dehumidifier – Add-on Price: $399 (Original price: $499)
- Yohome Sterilizing Foldable Clothes Dryer – Add-on Price: $299 (Original price: $399)
Limited quantities available, while stocks last. Book now and create a fresh, mould-free living environment!

Special Offer – Upon Spending A Designated Amount
Free SmellGREEN® Natural Cleaning Disinfectant
Receive 2 bottles of SmellGREEN® Natural Cleaning Disinfectant (100ml) upon spending $2,000 on Johnson Group’s Air Conditioner Cleaning Service, and receive 4 bottles upon spending $3,800.
The gifts will be delivered on the day of service. Limited quotas while stock lasts!
Air Conditioner Cleaning and Dehumidifier Cleaning Service Scope
Google 5-Star Customer Review
Don’t rush to top up refrigerant if your air conditioner isn’t cooling! Under normal use, refrigerant never gets consumed or leaks. Long-term lack of cleaning is what affects airflow and cooling performance.
Talk to our experts to learn how to restore your air conditioner’s efficiency and enjoy refreshing coolness again.
Tel: 2481 3988|WhatsApp: 5412 3517
Professional Steps of Air Conditioner and Dehumidifier Cleaning

Remarks: The cleaning and disinfection service excludes electronic circuits, motors, radiators, and outdoor units. Actual anti-mold performance may vary depending on usage and environment.
Hospital-grade Standardized ProcessDeep Cleaning with Simultaneous Disinfection and SterilizationNatural & Non-toxic CleanersAnti-mould and Anti-bacterial Protection for 12 monthsSuitable for Sensitive Groups
Air-Conditioner Cleaning – Before and After






Johnson Group Air Conditioner Cleaning Service Features
| Johnson Group | Other Brands | |
|---|---|---|
| Hands-on experience |
✔ |
❍ |
|
Service Model |
✔ On-site deep cleaning, sterilization, and disinfection — time-saving and convenient |
❍ Some companies need to remove the air conditioner for cleaning |
| Suitable for Sensitive Individuals |
✔ Designed for those with high hygiene requirements, children, pregnant women, and allergy sufferers |
✘ |
|
Cleaning Depth |
✔ 7-step standardized process, thoroughly cleans evaporator coils and fan blades |
❍ Only surface cleaning, unable to reach the evaporator fins |
|
Cleaning Technology |
✔ |
❍ High-pressure water cleaning may damage internal components |
|
Cleaning Materials |
✔ Australian AerisGuard™ pH-neutral enzyme solution that won’t damage metal surfaces |
❍ Strong acidic or alkaline cleaners can corrode evaporator fins and cause rust |
|
Mold Protection |
✔ U.S. EPA-certified antimicrobial coating on evaporator coils, effective for 12 months |
✘ No mold prevention treatment; mold and odor continue to grow |
| Natural Cleaning Agent | ✔ Non-toxic, non-corrosive, 99.99% sterilization rate |
✘ Chemical residue and metal oxidation leading to rust |
|
Drip Water Handling |
✔ Professional tools used on-site to unclog drain pipes immediately |
✘ No service or extra charge required |
|
Environmental Protection |
✔ Protective film is placed throughout the area to prevent contamination of furniture and floors |
✘ Lack of protection measures may cause secondary pollution |
Air Conditioner Cleaning Pricing
Why do air conditioner cleaning prices vary so much?
The cost of air conditioner cleaning depends on the type and number of units. Beyond price, professionalism, cleaning agents, and service scope are equally important. Low-cost options ($300–$500) often mean only surface-level cleaning or the use of cheap, harsh chemicals, while premium services include thorough internal cleaning, non-toxic solutions, high-temperature sterilization, and anti-mold maintenance.
A high-quality cleaning service is absolutely worth the expense. We clearly outline what’s included and not included, so you can compare options using the same transparent standard. Contact Our Customer Service here To learn more.
Air conditioner cleaning is a preventive health investment
Regular cleaning is not just a maintenance cost — it’s a preventive health investment that pays itself off over time. A properly cleaned air conditioner can reduce energy consumption by 10–30% and prevent costly repairs or replacement expenses. Delaying cleaning to save money can directly lower indoor air quality and negatively impact your health.
Air-Conditioner Cleaning Service FAQs
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