Do triple glazed sealed units always have a better Window Energy Rating (WER) than double glazing?

Triple glazed sealed units for trade can offer higher energy ratings, but performance depends on glass coatings, gas fill, and spacer bars. Some high quality sealed units for trade in double glazing can still achieve an A++ WER if optimised correctly. Before purchasing sealed units for trade, check the full WER calculation, not just the number of panes.

U-Values WER - Window Energy Rating Sealant Desiccant Gas Spacers Manufacture Product