Proudly family owned and locally made

When you choose Altherm you're supporting a New Zealand made product.

As part of the largest supplier of windows and doors in the country, our commitment to 'all things local' began when APL did. For us, it starts with our products which is why everything we manufacture is designed and tested for New Zealand buildings and take into consideration our country's unique landscape and environment.

We've never been more committed to supporting the growth of our local communities.

What does it really mean to be NZ Made?

As part of the largest supplier of windows and doors in the country, our commitment to 'all things local' began when APL did. In the  seven-part Made here, for you podcast series, APL dive deep into the craft, care, and commitment behind our windows and doors - from the people who know it best.

Made here, for you is a series about the people and thinking behind our locally made window systems; where local knowledge drives innovation, performance, and quality. Leading experts across APL and AGP have shared insights on how Innovative, Customisable, Local, Reliable, and Responsible Kiwi-made products truly stand apart in the face of increasing overseas imports.

Here's a selection from the series; to see the full panel of experts and their interviews with Simon Farrell-Green, editor of HERE magazine, visit aplnz.co.nz or listen to the full series on Spotify and Apple. 

Innovative

APL Senior Design Engineer, Dave sits down with Simon to talk about APL's innovative technology that keeps First's windows and doors ahead of Building Code requirements.

Listen to Dave's episode

Local

Scott, APL Business Support Manager, talks about our nationwide reach, supporting skilled jobs and communities, and APL's growing legacy of craftsmanship that stays close to home.

Listen to Scott's episode

Responsible

Profile Group's Sustainability Project Manager, Bex, explores what responsibility looks like for us and the impact on the place we call home.

Listen to Bex's episode
NZ owned and operated

NZ owned and operated

APL began in the heart of the Waikato in 1971, by a local family. Fast forward to today and we're still family-owned and Waikato based and have since built a nationwide network and several respected brands, including Altherm Window Systems. For over 30 years First has been working with architects, designers and homeowners across New Zealand. All First manufacturers are independently owned and operated with local knowledge and relationships.

Designed for NZ

Designed for NZ

We take huge pride in our track record of supplying window and door solutions for New Zealand home and building owners. Everything we manufacture is designed and tested specifically for New Zealand homes and businesses. Our Centre of Innovation houses our dedicated research, development and testing facility where our products are developed for our country's unique landscape, weather and aesthetics. Part of our commitment to designing for New Zealand is designing and operating in a way that reduces our environmental footprint.

NZ end-to-end

NZ end-to-end

Altherm is a brand of APL, the largest window solutions organisation in New Zealand. Every part of our supply chain has a local connection. Our Waikato based team designs and develops the product ranges. Our aluminium is extruded and surface finished in Hamilton. It’s then distributed nationwide to our independently owned manufacturers who fabricate and install the windows and doors into kiwi homes.

Supporting jobs

Supporting jobs

APL is a vertically integrated business which ensures our products are of the highest quality, delivered on time and help keep jobs in New Zealand. The ability to carry out most steps and produce many components in the operation and keeps business in our own backyard.

Nationwide

Nationwide

While our headquarters are in the Waikato, our extensive network of branches, staff and manufacturers spreads across Aotearoa.

Customer stories

Kiwis have been building homes with Altherm Window Systems for over 30 years. Explore some of these homes through our stories, videos, podcasts and galleries for inspiration.

Explore stories

Find an expert

Our independently owned manufacturers are based in towns and cities nationwide. They have a wealth of experience and because of their involvement in manufacturing and installation on a daily basis, their advice is highly practical.

Find an expert