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Air conditioner cleaning & sanitizing









Johnson Group Formaldehyde (VOC) Removal Service for Home Renovation

Eliminate formaldehyde (VOC) & pungent odour caused by building materials, new furniture & paints

Excellent performance in improving Indoor Air Quality

Benefits of using our service...

  • Service since 1947
  • AURO Airfresh Wall Paint™ - Anti-Formaldehyde Paint to decompose formaldehyde (VOC), odours, mould spores, viruses and bacteria in the air
  • SafePRO™ Formaldehyde (VOC) & Odour Remover - Remove the pungent odour caused by the chemicals (formaldehyde, paint, adhesives)

Caring for your family, home and the environment is our business

(Johnson Group VOC Removal Service can eliminate VOC inside home - photo captured by William Hung of Johnson Group)


What is formaldehyde

Formaldehyde is a colorless, flammable gas at room temperature, has a pungent, distinct odor, and may cause a burning sensation to the eyes, nose, and lungs at high concentrations. There is some evidence of asthma or asthma-like symptoms for children exposed to formaldehyde in homes.

Exposure to formaldehyde

The US Occupational Safety & Health Administration (OSHA) has limited workers' exposure to an average of 0.75 ppm for an 8-hour workday, 40-hour workweek.

The U.S. Department of Housing and Urban Development (HUD) set standards for formaldehyde emissions in manufactured housing of less than 0.2 ppm for plywood and 0.3 ppm for particle board. The HUD standards are designed to provide an ambient level of 0.4 ppm or less in manufactured housing.

Why we need to remove formaldehyde (VOC) from home after renovation

Formaldehyde is one of the Volatile Organic Compounds (VOCs) which is dangerous to human health. Building materials, new furniture and paints are often the major sources in homes because materials off-gas formaldehyde over time. People often spend more than eight hours a day in their homes; infants, kids and the infirm sometimes even spend the entire day inside their home. California Environmental Protection Agency Air Resources Board suggests that it is highly desirable that residential levels remain well below 27 ppb (0.027 ppm) to avoid acute effects in such individuals.


Allergy is a hypersensitivity disorder of the immune system. Allergic reactions occur to normally harmless environmental substances known as allergens; these reactions are acquired, predictable, and rapid. Strictly, allergy is one of four forms of hypersensitivity and is called type I (or immediate) hypersensitivity. It is characterized by excessive activation of certain white blood cells called mast cells and basophils by a type of antibody known as IgE, resulting in an extreme inflammatory response.

Asthma and Allergy

Some main signs of allergy are itchiness, sneezing, inflamed or infected eczema, watering/reddening eyes, runny nose and clogging in the lungs. Allergens that triggers of asthma can hide in the most unlikely places like on air conditioners. This is why regular air conditioner cleaning is vital.

IgE and Asthma

Immunoglobulin E, or IgE, is a natural substance in your body that plays an important role in the development of allergic asthma. Increased levels of IgE may result when you are exposed to triggers, such as:

  • Animal dander
  • Dust mites
  • Molds

When you're exposed to certain allergens, your body releases IgE, which then binds with several types of cells:

  • Basophils
  • Lymphocytes
  • Mast cells

When IgE binds with any of these cells, it can stimulate your immune system, cause your airways to become narrow and inflamed, and make your asthma symptoms worse.



Ask for help from our Home Sanitizing Professionals



In keeping our words "Reducing any unnecessary use of toxic chemical to further reduce the impact to the rest of environment". We use only natural materials to decompose formaldehyde and Volatile Organic Compounds. This service not only can minimize your family from exposing to toxic chemicals but also eliminate harmful contaminants and odours effectively.


Formaldehyde (VOC) Removal Service for Home Renovation is available in two options:

AURO Anti-Formaldehyde Paint to paint the walls (Suitable for home that is going to renovate) - Hong Kong Exclusive, for reference only.

  1. Prime the walls with wall filler.
  2. Paint the walls with Airfresh Wall Paint™ (white color) which can decompose formaldehyde (VOC), odours, mould spores, viruses and bacteria in the air. Protection up to 12 months

SafePRO™ Formaldehyde (VOC) & Odour Remover to treat Newly Painted Walls and New Furniture (Suitable for home that renovation is just done)

  1. Measure Total VOC (TVOC) values at indoors and furnture with RAE® Portable Handheld VOC Monitor.
  2. Spray to all surfaces like ceilings, walls and furniture with a fogging machine.
  3. Wipe surfaces of furniture
  4. Continue to spread and degas the scent with a ventilation system.
  5. Measure again the overall value of TVOC.
  6. Continue to capture air particles with Giabo Air Filter for 1 week. After which you will notice remarkable results.


Exclusive Tools & Natural Materials


SafePRO™ Formaldehyde (VOC) & Odour Remover

Most conventional odour solutions consist of applying fragrances to mask the problem. SafePRO™ Formaldehyde (VOC) & Odour Remover is a scientifically developed technology formulated specifically to eliminate unpleasant odours, without relying on strong perfumes and harsh chemicals. SafePRO™ significantly reduces odours like formaldehyde, Volatile Organic Compounds, paint, adhesives, mould and flooding etc. replacing them with a refreshing scent.

SafePRO™ Formaldehyde (VOC) & Odour Remover is ecofriendly, non-toxic and does not contain paradichlorobenzene, making it safer for the environment.

Benefits of using SafePRO™ Formaldehyde (VOC) & Odour Remover

  • Reduces Malodours (Formaldehyde / Volatile Organic Compound odours)
  • Leaves a clean and refreshing scent
  • Harmless to people, pets and environment
  • Eco friendly product
  • Safe, Non-toxic & Non-hazardous 
  • Hypoallergenic 
  • Non-corrosive 
  • Non-irritating smell 
  • Non-perfumed
  • Non-flammable 
  • No phosphates
  • Made in Australia



AURO Airfresh Wall Paint™ (white color) - Hong Kong Exclusive, for reference only

Decompose Formaldehyde, Solvent-Free, VOC-Free

AURO Airfresh is a natural wall paint with a photo-catalytic effect. The paint effectively decompose formaldehyde, odours, mould spores, viruses and bacteria in the air, thereby creating a healthy home. The photo-catalytic effect of Airfresh wall paint has been tested and confirmed by the Institute of Technical Chemistry in Hanover, Germany.

This outstanding result shows that the formaldehyde is not just absorbed but actually decomposed by Airfresh.


RAE® Portable Handheld VOC Monitor

RAE® Portable Handheld VOC Monitor is the most advanced handheld volatile organic compound (VOC) monitor on the market. Its photoionization detector’s (PID) extended range of 0 to 15,000 ppm and a rapid three-second response time makes it an ideal instrument for detection.

(We use RAE® Portable Handheld VOC Monitor to measure VOC level - photo captured by William Hung of Johnson Group)

Our Services
  • Pest Control
  • Termites Control
  • Home + Solutions for Allergy (IgE,Asthma,Eczema)
  • Rug/Carpet Cleaning
  • Mattress,Sofa Cleaning & Sanitizing
  • Air conditioner Cleaning & Sanitizing
  • Home Cleaning & Sanitizing
  • Home Renovation Cleaning & VOC Removal
  • Formaldehyde removal service after renovation works
  • Anti-Fungus & Bacteria Service for Humid Home
  • Office Cleaning & VOC Removal
  • Bed bugs Control
  • Bird Control
  • GreenStore - Green lifestyles
  • Exporting Fumigation (MB & ETO)
  • Dust Mite & Allergen Removal
  • Pest Management & Allergen Removal Consultancy
  • Aircraft Disinsection
  • GreenStore
  • Solar Power Outdoor Insect Trap
  • SmellGREEN 100% Natural Insect Repellent
  • SmellGREEN Natural Disinfectant Spray
  • Bug DeFence Automated Mosquito Misting System
  • Starkeys Products -Insect Killers
  • Bird Control Products
  • SafePRO InsectTrap


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