I am considering replacing my aluminum single frame windows with double pane energy efficient windows.One of the manufacturers I have contacted says quot;I don't put Argon gas between the panes because the gas will leak out in a year or twoquot;How important is Argon or another inert gas between the panes a far as energy efficiency is concerned? Also, some installers take out the entire existing aluminum frame while others insist to remove the entire frame is not a good idea and they leave the frame and install the new windows over the existing frameWhich installation method is recommended?
I think its great that you are upgrading your windows! Argon gas will leak out over the course of 5 years or soI think the window companys use argon to help them achieve better energy ratings when they are certified by the NFRC and AAMAThat being said, I would not waste money on argon filled unitsSeveral manufacturers have specifically designed windows to install directly over your exsisting window framesAs long as your window guy is using one of these replacement windows, its ok for them to leave your old frames in placeif they are using a window designed for new construction, then they should remove the old frames for proper fit and weather tightness,
