Frequently Asked Questions

Modular Ducting Systems is a Christchurch-based company that supplies modular ducting hardware, system design, and technical advice for the transport and extraction of gases and solid materials. We work with industry, schools, and in domestic applications.

Modular Ducting Systems specialises in dust, fume, and material extraction, movement, and containment systems.

We have been supplying modular ducting hardware, system design, and technical advice in the South Island since 2001.

Modular Ducting Systems is a partner business of BTS Engineering, with shared ownership.

We are a local company with extensive experience and a proven technical base. We use quality components, and we have long-running relationships with complementary suppliers.

We are proud of our design excellence and conscientious aftercare and backup.

Yes, we work with a very wide range of industries to provide specialist industrial ducting and extraction systems.

Since 2001, we have built an enviable reputation as a trusted supplier of modular ducting hardware, system design, and technical advice to the South Island industry, schools, and for domestic applications.

Building and installing successful air movement systems requires a very high level of specialist knowledge. Our systems are proven to work every time.

BTS Engineering is now available to you as an on-call installer. BTS Engineering have been working closely with Modular Ducting Systems for many years, and we already know and have worked with a large number of Modular Ducting Systems’ clients.

Yes, Modular Ducting Systems is committed to serving clients in the South Island for the long-term.

Modular Ducting Systems is located with BTS Engineering at 813 Waterholes Road, Rolleston.

Yes, we supply modular ducting systems throughout the South Island.

Yes, we service Christchurch and Canterbury.

Yes, we frequently travel to industrial sites across the South Island.

Yes, we work with local South Island installers and fabricators.

Yes, we supply ducting systems to remote South Island locations.

No, we don’t work directly with customers on the North Island. However, we do have a long-established network of competent and trusted ducting companies in the North Island, who we can refer you to.

Get in touch via our website.

Use the contact form on our website, or get in touch directly by email or phone.

Yes, we are happy to provide technical advice before you purchase ducting components. A ducting and extraction system is complicated, and it’s important to get it right before you invest in installing, extending, or improving it.

Yes, we do offer free consultation and system advice. Please get in touch.

Immediately! If you have an emergency, get in touch.

An industrial dust extraction system comprises ducting from a source through a fan to a filter.

A fume control system is required in all government-regulated environments or when dust from industrial processes and noxious fumes are present.

A dust and fume control system is needed by every industry that requires the exhaust of fumes or the transport of materials.

A correctly designed and installed dust extraction system will create a healthier working environment by removing dust from the air in a workplace.

Yes, dust extraction systems are required under New Zealand health and safety laws. It’s important to note that the laws relating to workplace health and safety are becoming more stringent, and penalties for non-compliance are more severe.

Correctly designed and installed dust and fume control systems help meet WorkSafe NZ requirements by improving the health of the working environment. It protects them from dust and fumes inherent in work processes like cutting wood products and welding.

An industrial ducting system works in an enclosed space to control where gases, materials (dust), and fumes are present and where they’re transported to.

Modular ducting is a ducting system that’s made of individual components that are assembled to fit a particular space, and to control the gases, materials, and fumes that are produced by a specific manufacturing process.

Flexible ducting is used with moving machinery to keep the intake where the dust or fumes are produced and maintain the size and volume of the ducting so the airflow necessary for efficient extraction is maintained.

To make sure you get the right ducting system for your factory or workshop, the first step is to call us so we can do a site assessment. Each workplace has its own individual requirements.

Correct ducting and fan design are crucial to airflow and system efficiency.

The types of filters that are used in a dust extraction system depend on the material being extracted. We use fibre socks and composite materials in pleated filters. We liaise with accredited filter suppliers to determine the right filter for each application.

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Cyclones are used in dust extraction systems to separate the air from the material being extracted.

A rotary valve is like a revolving door that controls the separation of the material that falls out of the air in a bag house to allow removal of the material while keeping the air in the system.

The use of axial fans or centrifugal fans depends on the nature of the air movement in the ducting system. An axial fan is used for fumes and gases, and a centrifugal fan is used for high mass materials like wood dust.

Fume arms allow precise extraction of fumes from welding, chemical, and other strong odours from where they are being generated.

Yes, Modular Ducting Systems can design complete dust extraction systems.

We can supply complete systems or individual components depending on your requirements.

It depends on where the upgrade or extension falls within the capability of the existing fan. Modular ducting allows for the system to be adjusted as demand on it increases.

We can supply industrial ducting components overnight if we have stock of the component in our comprehensive range. For custom-made components, we target supply in five days.

Yes, if we have stock of the component in our comprehensive range, we can supply overnight. For custom-built components, we target supply in five days.

A dust extraction system should be inspected at least every six months. Checking the airflow will indicate the filter and fan efficiency. A ducting system is the lungs of a workplace. If it’s choked, you can’t breathe!

The cost of an industrial dust or fume extraction system in New Zealand depends on the requirements, including what material is being extracted, the distance from the fan to the equipment being served, and the volume of air being extracted.

The cost of an industrial dust or fume extraction system in New Zealand is affected by what material is being extracted, the distance from the fan to the equipment being served, and the volume of air being extracted.

Using second-hand dust extraction or ducting equipment is not recommended due to improvements in technology and government regulations. What’s more, used equipment is scarce, difficult to maintain due to outdated control systems, and it tends to be inefficient compared to modern products.

Yes, our pricing for industrial ducting systems is competitive.

All businesses, regardless of their size, will benefit from a well-designed and installed modular ducting system. Businesses need to consider the health of their workers, and Government air quality and Health and safety legislation is becoming stricter, and the penalties for non-compliance can be significant.