Nanocoating works in a similar way to window films — it increases the insulation of your windows by keeping the heat outside in summer, and inside in winter. Nanocoating does not significantly affect the amount of light coming through your windows, can be installed on all types of windows and has a 10 year warranty.
Nanocoating is also a good alternative to double glazing if you are having issues with condensation. Being an infrared radiant heat barrier, the coating helps keep the window surface temperature the same as the ambient room temperature. There will be less condensation forming on the coating compared to a single glazed window, and it will also evaporate during the day instead of dripping down and pooling at the bottom of your window frames.