About Altherm

About Altherm

You see the world at its best through an Altherm window, no matter the view.

Perfect for you

Stylish contemporary lines, effective thermal technology and unwavering attention to detail have made Altherm a favourite with architects, designers and homeowners across New Zealand.

Altherm draws on a 40-year tradition of design and engineering excellence, so whatever the project, you'll find an Altherm product that's perfect for your build or renovation. Altherm offers a wide range of solutions for all homes, from entrance doors to windows, sliders, bi-folds and thermally efficient options, Altherm has an option to suit every need.


Altherm is a brand of APL, the largest window solutions organisation in New Zealand.

Why choose Altherm Window Systems?

Local

When you choose First you're supporting a New Zealand made product. Everything we manufacture is designed and tested for our buildings and takes into consideration our country's unique landscape and environment. Our network of independently-owned and operated manufacturers have local knowledge and a commitment to excellence.

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Comprehensive

Our wide range of window types, configurations, and capabilities ensures a solution for the best design and function for houses of all sizes, styles, and budgets. We have options for both new builds and renovations.

Explore the ranges

Innovative

We’re dedicated to supplying high-quality products that are designed specifically for our unique environments. Our attention to detail and commitment to pioneering solutions that deliver exceptional performance have led to our unique focus on the complete window system: frames, glass, and installation.

See our window system

Reliable

Drawing on over 30 years' experience in the market and as part of the country’s largest supply chain of manufacturing windows and doors, First has become a trusted partner of homeowners, builders and architects nationwide.


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Responsible

We’re working together with our parent company, APL Window Solutions, to make sustainable changes for the future of our environments.

See sustainability initiatives

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APL Window Solutions

At APL, it’s all about quality. From aluminium extruding, to surface finishing, specialised manufacturing, distribution, and we continually invest in leading-edge products and processes.

Our dedication to quality extends to looking after our diverse network of manufacturers. We work hard to open the right doors for our manufacturers and employees.

APL Window Solutions is the parent company of First Windows & Doors.

APL and Sustainability

APL believes by building better buildings we're helping to shape a better world. Our approach to sustainability is all-encompassing.

We are working to pave a way forward for ourselves, and others in large industrial companies to do our bit for the environment. We are striving to make the future better for generations to come, and our country, through the steps we take in our business on a daily basis.

Tools to inspire you

Get Started

Get Started

9 helpful tips to inspire and get you started with First Windows & Doors

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Inspiration gallery

Inspiration gallery

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

Inspiration gallery
Product finder

Product finder

Discover our comprehensive product range - designed to complement any project

Virtual home

Latest trends

Entrance doors

Browse our gallery of ideas for your entranceway

Entrances

Living spaces

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Living Spaces

Bedrooms

Browse our gallery of ideas for your bedrooms

Bedrooms