How MDS and BTS work together for your business

BTS acquired Modular Ducting Solutions in late 2025, and the two businesses are complementing each other exactly as planned.

The most visible change is the launch of a new website for MDS, but in other respects we’ve simply continued working closely together as we have for many years.

BTS and MDS are complementary services for your business

The way the relationship works is that MDS is the extraction system design and component supply side of the business, while BTS takes care of installation, any special fabrication that might be required, and maintenance.

Why our service is important to know about

WorkSafe is placing a big emphasis on air quality in the workplace, and the penalties for non-compliance can be significant. What’s more, it’s the responsibility of every person conducting a business to maintain healthy air quality in their workplace.

Modular Ducting Systems (MDS) is the South Island’s only resident dust, fume, and material extraction specialist. BTS’ role is to support MDS as outlined above, and together we deliver a seamless service that will help you meet your WorkSafe obligations.

Get in touch today to learn how this new partnership can benefit your business.

MDS designs extraction systems that work

You might think that gas, odours, and dust/particles behave in the same way in an extraction system – but that couldn’t be further from the truth. That’s why designing an effective, cost-efficient dust and fume extraction system is a job for specialists with a mastery of the physics of airborne material transportation. Sadly, a lot of HVAC people don’t have that level of knowledge and get it wrong – they don’t understand the science and their designs are impractical and don’t work properly.

As specialists who understand the physics involved, we are able to design systems that work to transport dust just as effectively as they do simple gases – and keep working effectively without choking themselves because the design is wrong.

You’ll find Modular Ducting Systems in every industrial, commercial, and institutional category, from local joiners to factories, freezing works, seed warehouses, schools, and hospitals.

We’ll keep your extraction system doing its job

MDS carries a large stock of high-quality parts and components for extraction systems, and we can get them to you quickly – usually within a day or two to most places in the South Island.

• Cyclones               
• Flexible ducting              
• Modular steel ducting
• Electric motors               
• Axial fans              
• Centrifugal fans            
• Filters – cartridge, bags, and custom-made
• Fume arms
• Rotary valves
• School Systems                       
• Shredders, compactor machines