Altherm is part of APL, the largest window solutions organisation in New Zealand, based in Hamilton, and with a strong supplier network throughout the country.

Our diverse range includes Metro Series, APL Architectural Series, ThermalHeart technology, Smartwood and commercial suites. We also have Miro, Icon and Urbo which are exclusive hardware ranges with an integrated look.

	ALTHERM Altherm is a leading brand in the New Zealand building industry. Find out why.		RANGES Altherm's offers a wide range of windows and doors, perfect for your project.
	VIDEO View our online videos for product demonstrations and useful tips.		ENERGY RATING SYSTEM Altherm is committed to energy efficiency. See the two rating systems and what it means for you.