I am looking at replacing all my windows. I have talked to Lowe's and Champion.

There is of course a huge difference between the two. Both seem to be of vinyl construction with the Champion being the more solid. My question is about the Low E/Argon Gas, is that really efficient as it gets or do the windows at Champion exceed that energy efficiency? Thanks in advance for all comments.
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Anonymous
Yes absolutely, windows are woefully inefficient so Low-E, Argon, Triple-Panes (instead of the now standard Double-Panes) or ANYTHING that helps is paying you back sooner and a wiser investment. However, you must get both the R-VALUE (more so the glass area's insulation, higher is better) and both U-FACTOR and SOLAR HEAT COEFFICIENT (the entire window unit's insulation, lower is better) for the specific models you're considering. - Then, the Longer Warranty is any tie-breaker, as this indicates the sealing of the Argon inside is better or more reliable and long-lived. Don't let marketing and price fool you. For example, CertainTeed had an excellent window by all accounts for over a decade (the Bryn Mawr II model) that beat even most new windows (including CertainTeed's own newer models) of the time, but it only cost $200 (without installation) for a decent range of normal window sizes.
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Anonymous

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