I have relatively new double glazing (less than 10 years?), but the panels are not argon filled or coated.
Can I simply replace the existing units with 'A' rated units? Or does it involve ripping the whole frame out as well?
Also what sort of improvement will I get with A rated units?
Can I simply replace the existing units with 'A' rated units? Or does it involve ripping the whole frame out as well?
Also what sort of improvement will I get with A rated units?