To improve the BER (Building Energy Rating) of your home, Wright Windows can supply Energy-efficient windows and doors from A-rated through to Passive standard. Combine style and elegance with quality, energy efficiency and security with our extensive range of PVC; Aluminium, Alu-Clad, Flush Sash and Timber products. The National Standards Authority of Ireland (NSAI) operates an independent Window Energy Performance (WEP) Certification scheme for the Irish market.