Design Windows are New Zealand’s leading aluminium window systems manufacturers. Established in 1984 we have over 30 years experience in the aluminium joinery industry working with key suppliers.

We manufacture one of the most respected aluminium joinery brands in the building industry, Altherm Window Systems. We also manufacture other brands from APL Window Solutions, New Zealand’s largest aluminium windows supplier.

Our core purpose is to provide excellent Window and Door Joinery experiences to all concerned without regret.

To do this, our core values are:

  • Excellence is a way of life
  • Take responsibility for my work
  • Tell it straight
  • Love to win
  • Put my hand up to help the team
  • Willing to learn and change

We have modern factories and showrooms in Nelson, West Coast, Cromwell, Dunedin and Auckland so we believe we can offer superior service and performance which fit perfectly with our core values.

At Design Windows we are not just residential experts, we have been involved with a wide range of architectural and commercial projects, including many award winning projects that set the benchmark for New Zealand Architecture.

We are a proud distributor of Locarno Louvres. These aluminium louvres are designed and manufactured in New Zealand. Locarno offers customised solutions and design assistance on a range of products to suit all projects. These include roof louvres, shutters, screens and commercial applications.

Design Windows Central Otago is a Gold Associate Member of the Registered Master Builders Association, Central Otago Branch.