Choosing energy efficient windows just got easier - new standard

Choosing windows to make homes warmer and more comfortable is now easier with the launch of ENERGY STAR qualified windows.

The Energy Efficiency and Conservation Authority (EECA) says selecting the right windows for a new build or renovation is important because up to half1 of a new home's heat can be lost through its windows but buying energy efficient windows can be confusing.

Senior Technical Advisor Christian Hoerning says ENERGY STAR qualified windows are an easy way for consumers to identify a higher standard of energy efficiency compared to a minimum standard aluminium frame with double glazing.

"ENERGY STAR qualified windows are a step up in thermal performance over minimum standard aluminium frames with double glazing and will make your home warmer and more comfortable. EECA estimates they will reduce heat loss through windows by more than 18 percent."

EECA developed ENERGY STAR qualified windows in consultation with the Window Association of New Zealand (WANZ) and the Building Research Association of New Zealand (BRANZ) to ensure a technically robust certification process.

BRANZ Senior Scientist John Burgess says it has been difficult for consumers to understand the technical information about windows. BRANZ research had identified how higher performing windows can be endorsed with ENERGY STAR, he says.

WANZ Executive Director Stewart Knowles says the association welcomes the introduction of ENERGY STAR qualified windows because ENERGY STAR is widely recognised as an independent mark of energy efficiency and will encourage homeowners to consider higher performing windows when renovating or building a new home.

"ENERGY STAR is a simple way for homeowners to know they are getting more energy efficient windows."

Christian Hoerning says about 21,000 new homes are expected to be built each year for the next five years, with new builds driven from population growth in Auckland and the Christchurch rebuild.

"Increasing the uptake of energy efficient windows installed in new and existing homes has the potential to make a significant difference to improving the energy efficiency and comfort of homes," he says.

Read more about ENERGY STAR windows on the ENERGYWISE website  

Media enquiries:

Penny St John, Senior Communication Adviser, EECA

Phone: 027 687 3123

Email: penny.stjohn@eeca.govt.nz

Darian Hutson, BRANZ

Phone: 04 238 1323 or 027 218 6958