Energy rating systems


Energy efficiency is increasingly important for New Zealand home-owners. First offers window and door options that optimise interior comfort levels and save on power bills.


weers Window Energy Efficiency Rating System

The Window Energy Efficiency Rating System is a second grading format that allocates between one and six stars to a job lot of windows and doors. One star is a basic mark while three stars is the threshold for the achievement of the blue Energy Star mark. Between three and six stars (half stars available) are possible with ThermalHEART systems and high performance glass options.