Air Duct Disinfection

We disinfect HVAC ductwork and AHU sections using ULV dry-fogging that produces ultra-fine dry-fog micro-droplets of a hospital-grade disinfectant. The dry mist reaches long runs, risers, branches and complex plenums for uniform contact—without wetting.

Non-wetting dry-fog approach; suitable for internal duct surfaces when used as directed

Aligned to Malaysia’s IAQ expectations and your internal EHS/SOP requirements

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Non-wetting dry-fog approach – suitable for internal duct surfaces when used as directed

Fast return to service after purge and checks

Minimal disruption as works planned around live operations

Clear proposal –fixed fee with dosing plan, dwell time and deliverables

problems we solve

Mitigating Microbial Risks in HVAC Systems

HVAC duct systems can harbor microbial growth, bacteria, and residual contaminants long after surface cleaning is completed. Without proper disinfection, these hidden pollutants may continue circulating through the ventilation system, contributing to recurring indoor air quality concerns, unpleasant odors, and potential health risks for occupants.

These are common risk factors and performance gaps we help contractors and facility managers address through validated air duct disinfection solutions:

Where we disinfect?

Standards & context

Air duct disinfection is performed strictly after mechanical cleaning to ensure contaminants are removed before antimicrobial treatment is applied.

Aligned with Malaysia’s IAQ regulatory expectations, including OSHA 1994 and DOSH ICOP IAQ 2010 guidelines, and are delivered in accordance with established Environmental, Health & Safety (EHS) and internal SOP requirements.

how we work

Our disinfection process

Method : ULV dry-fog application of a hospital-grade disinfectant, producing ultra-fine dry-fog micro-droplets for uniform, non-wetting coverage inside ducts and AHU sections.

01 Preparation & isolation

Sections isolated
Signage posted
Sensitive equipment protected

02 ULV dry-fog pass

Controlled dosing to fill the section and contact internal surfaces evenly

03 Dwell time

Maintained per label to achieve efficacy

04 Ventilation purge

Controlled purge and safe re-entry checks

05 Close-out

Certificate
Application map
Photos
Optional verification sampling

DOCUMENTATION & CERTIFICATE

What you will receive

a) Disinfection certificate with disinfectant type (hospital-grade), batch/expiry, volumes, dwell time and treated sections

b) Application map (by duct section/AHU area) with photos at access points

c) Safety & re-entry guidance for your team

d) Optional verification on request (e.g., swab/ATP or targeted IAQ checks)

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frequently asked questions (FAQ)

Have some questions?

Do you disinfect without cleaning?

We can, but best practice is clean → disinfect → verify so debris doesn’t shield microbes.

Does it leave residue or smell?

A light, temporary odour may be present; the purge clears it.
Is it safe for insulation and coils? The ULV dry-fog is non-wetting when applied correctly.

Is it safe for insulation and coils?

The ULV dry-fog is non-wetting when applied correctly.

Can you prove coverage?

Yes—application photos, dosing logs and a certificate per treated section.

How long is the dwell time?

Set according to the disinfectant label and site conditions; we document the exact period on the certificate.