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Air conditioner cleaning & sanitizing









Johnson Group Formaldehyde (VOC) Removal Service after Renovation

All Round Protection 24/7 – Eliminate Bacteria, Viruses & Odours, Decompose Formaldehyde

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

Excellent performance in improving Indoor Air Quality

Benefits of using our service...

  • Service since 1947
  • ACT CleanCoat™ - 24/7 actively decompose harmful airborne pollutants like odours & formaldehyde (VOC)
  • SafePRO™ Formaldehyde (VOC) & Odour Remover - Remove the pungent odour caused by the chemicals (formaldehyde, paint, adhesives) instantly
  • ATP (Adenosine Triphosphate) Meter to calculate the bacterial level on the walls
  • RAE® VOC Monitor to measure TVOC values at indoors and furnture
  • AURO Airfresh Wall Paint™ - Anti-Formaldehyde Paint to decompose formaldehyde (VOC), odours, mould spores, viruses and bacteria in the air

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



Listed IAQ Contractor (Indoor Air Quality Information Centre of EPD)



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:

Formaldehyde (VOC) & Odour Control System 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. ACT CleanCoat™ to ceilings and walls with ESS Electrostatic Spray Gun.
  3. Wipe surfaces of wooden furniture with SafePRO™ Formaldehyde (VOC) & Odour Remover.
  4. Air wash indoor air by axial fan ventilation kit.
  5. Measure again the overall value of TVOC.
  6. Calculate the bacterial level on the walls with ATP Meter.
  7. Free lending (1-2 week) of air filter to further improve indoor air quality.


AURO Anti-Formaldehyde Paint to paint the walls (Suitable for home that is going to renovate)

  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


Exclusive Tools & Natural Materials


SafePRO™ Formaldehyde (VOC) & Odour Remover

Decompose formaldehyde (VOC) & pungent odour instantly

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

(SafePRO™ removes Formaldehyde & VOC instantly - photo captured by William Hung of Johnson Group)



ACT CleanCoat™

Decompose formaldehyde, musty smell and harmful contaminants for 24/7 365 days

ACT CleanCoat™ is an eco-friendly, transparent, water based coating that eliminates viruses, bacteria, moulds and fungi effectively up to 99.9% within seconds. CleanCoat™ also decomposes formaldehyde (VOC), pungent odours, musty smell and harmful contaminants.

ACT CleanCoat™ is applied by a unique electrostatic coating method. Bacteria levels drop drastically within 30 seconds and all bacteria, viruses and moulds are virtually eliminated within 30 minutes.

ACT CleanCoat™ consists mostly of water and the active ingredient Nano Titanium Dioxide. The applied coating is activated by all light (as found in natural daylight or common fluorescent lighting), only releasing water and carbon dioxide back into the atmosphere.

Benefits of using ACT CleanCoat™

  • Harmless to people, pets and environment
  • Eco-friendly, Safe, Non-toxic & Non-hazardous
  • Lives up to all EU health and safety directives
  • 12 months protection
  • Long lasting elimination of 99.9% of all bacteria and viruses
  • Long lasting air purification effect
  • Self-cleaning properties
  • Product of Advance Cleantech Denmark

(ACT CleanCoat™ is applied by a unique electrostatic coating method. CleanCoat™ keeps decomposing formaldehyde & VOC for 12 months)


ATP Meter

Adenosine Triphosphate, or ATP, is the energy molecule found in all living things, making it a perfect indicator when trying to determine if a surface is clean or not. ATP systems help to rapidly verify if surfaces have been cleaned thoroughly and to ensure that biofilms are not developing on the surface that could affect quality.

Testing Method

Press the swab, holding only the stem of the swab, firmly against the test area and rub vigorously, rotating the swab while covering the whole area. Put the casing in the ATP Luminometer and wait for 15 seconds to calculate the bacterial level (0 – 9999).

ATP Levels Indications

  1. Very clean (e.g. hospitals) <15
  2. Clean (e.g bakeries, restaurant kitchen) <50
  3. Acceptable (e.g schools, public places, hotels) <100
  4. Unsatisfied 100-500
  5. Warning >500


ESS® Electrostatic Spray Gun

ESS® Electrostatic Spray Gun equips with the patented MaxCharge™ "air-atomizing induction-charging" nozzle, which was invented at the University of Georgia. The nozzle is a tiny electrode which applies an electrical charge to the spray, spraying out as fine as 40 micron VMD droplets. The electrical charging also causes a natural force of attraction between the spray droplets and target surface, making CleanCoat droplets coated on all sides of an object invisibly.


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)


AURO Airfresh Wall Paint™ (white color)

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.




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