ENERGY STAR Canada (V5.0) minimums and “Most Efficient” criteria for windows, patio doors, and entry doors—used by Vinyl Window Pro.
This Vinyl Window Pro reference illustrates ENERGY STAR Canada Version 5.0 criteria: Windows (U ≤1.22 W/m²·K or ER ≥34; Most Efficient U ≤1.05 or ER ≥40); Sliding patio doors (U ≤1.22; Most Efficient U ≤1.05); Entry doors—opaque (U ≤1.22; Most Efficient U ≤1.0), ≤½-lite (U ≤1.22; Most Efficient U ≤1.2), >½-lite (U ≤1.80). Canada is one climate zone.