Tools to inspire you


9 helpful tips to inspire and get you started with Altherm Window Systems


Find the best window and door options for your living, kitchen, bathroom and entranceway


Discover our comprehensive product range - designed to complement any project

Architecturally Designed

With stylish contemporary lines, effective thermal technology and unwavering attention to detail, Altherm has become a favourite with architects, designers and homeowners across New Zealand.

Altherm offers a wide range of solutions for all homes, from entrance doors to windows, sliders, bi-folds and thermally efficient options. Everything is designed and tested specifically for New Zealand's unique landscape, weather and aesthetics. It's then fabricated and installed by Altherm's network of independently owned and operated manufacturers. 

Window and door options


Choose from a range of window and door formats to suit your home and style


We offer powdercoated or anodised surface finish options in a wide range of colours


We have four distinct hardware ranges to enhance your windows and doors

A Customer Story

Crowd Pleaser