WERS Helps You Choose

WERS is the official rating system of the NZ Window Industry for comparing the performance of windows and doors installed in a typical New Zealand home.

Government supported, it uses a simple 5-star system to tell you how various window frame and glass options will perform. It advises you the best windows to use for keeping your house warm in winter, cool in summer, and for minimising fading damage.

WERS helps you determine the suitability of particular window products for your location and climate. It covers different frame materials - aluminium, timber, PVC, etc - and different glazing types such as single or double glazing, tinted glass and so on.

The star rating and related cost factors help you determine the right product for your needs

Up to 40% of your home's energy is lost through the windows. Improving the energy performance of your window system reduces your heating and cooling costs, creating a more comfortable home and reducing energy consumption.

WERS applies to any glazed exterior joinery in your home, such as windows and glass doors.

WERS is your scientific reference point for energy conservation - the better the star rating, the better the performance. WERS is also your 'comfort' measure: now you have a star rating to help decide the level of comfort you can create in your home.

You know that you can choose WERS rated products with certainty, as WERS suppliers must be registered and their product ratings licensed.