Energy & carbon FAQs.

It depends on glass area, orientation, glazing and film grade. In cooled buildings the summer cooling saving can be meaningful; our Energy Savings Calculator gives an indicative annual figure in seconds.

Low-emissivity films reflect some indoor heat back into the room, trimming heat loss through large windows — a smaller, year-round benefit on top of the summer cooling saving.

Yes — it reduces cooling (and some heating) energy and its carbon, and upgrading existing glazing with film avoids the embodied carbon and waste of replacing whole window units. See our Environmental Policy.

Yes — by rejecting up to 79% of solar heat, less cooling is needed to hold temperature, so the system runs less.

It's a recognised, cost-effective way to reduce solar heat gain and overheating in glazed spaces — often used where re-glazing isn't practical.