About Us

DTN specialises in Mechanical HVAC Drafting and 3D Modelling.

With over 20 years of experience, we pride ourselves in the quality of our work.

Our approach is doing things correctly the first time with the appropriate tools, at the appropriate time.

We move forward through technology and innovation; and have a straight forward philosophy – keep it simple.

Projects and coordination problems can be complex but our solutions are always clear and simple. Utilising RevitMEP, 3D laser scanning and prefabrication/modularising assembly workflows we achieve maximum efficiency and accuracy.

We’ve had the privilege to work with some of the largest contractors in the business and have established a reputation for always delivering finely detailed functional and energy efficient models that capture the clients projects requirements.

Our team works collaboratively with our clients and are committed to building and developing long term relationships. We strive for excellence and deliver with confidence.


  • Mechanical HVAC Drafting
  • 3D BIM Modelling LOD 100-500
  • 4D BIM Sequencing
  • 5D BIM Schedules
  • Project Management
  • Coordination
  • 3D laser scan surveying
  • As builts


  • VAV – Variable Air Volume
  • VAF – Variable Air Flow
  • FCU – Fan Cool Units
  • HX – Heat Exchangers
  • Chillers
  • Boilers
  • DX – Direct Exchange
  • AHU- Air Handling Units




  • Revit MEP
  • AutoCAD MEP
  • Navisworks
  • CADmep+ (CAD-Duct)
  • Recap
  • Inventor
  • 3D Laser scanner
We find Datt & his team to be diligent, motivated and more competent in all
areas of mechanical services within the

B.Woodyard A.G.Coombs

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To chat about your project contact usWe’ll get back to you asap.