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Question DetailsAsked on 6/14/2011

Double pane low-e glass versus new vinyl windows

I currently have aluminum windows with single pane glass throughout my house. I need to replace one broken window pane and this has lead me to consider getting 1. new vinyl windows throughout the house (with double pane low-e glass) or 2. double pane low-e glass in the existing aluminum frames. I know that double pane low-e glass will be more energy efficient than the single pane glass that I currently have. But I'm not sure if paying more for new vinyl windows would be a good investment (versus just getting the double pane low-e glass in the existing aluminum frames). Any advice on this?

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    5 Answers


    Can you get double-pane low-e glass in your existing aluminum frames? Do you have an estimate from someone to do it?

    Answered 9 years ago by harry


    I can. I got a quote for about $2,500. We have 8 windows in our house.

    Answered 9 years ago by lhs3407


    Meself, I'd go for the new vinyl windows.

    Answered 9 years ago by harry


    It's much more cost efficient to change over to new vinyl windows as opposed to replacing all individual glass panes.

    Answered 9 years ago by Angelia


    Hi There.

    I am a general contractor is Charleston, South Carolina.

    If you are replacing the glass for increased energy efficiency and lower utility bills, then generally you will be better off replacing the entire window unit.

    Depending on the number of windows (typically somwhere around 20 for the average home), type of home construction, age of your home, climate zone, and a few other variables, one could expect to see a slightly lower utility bill.

    When I have looked at the return on investment for replacement windows, I have found that high efficiency replacement windows usually start paying for themselves somewhere around 8 years.

    Also, the older aluminum framed windows do transfer the heat and cold from outside to inside alot more than newer constructed windows.

    Good luck to you.

    Answered 9 years ago by tstrock

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