Absolute garbage. Loe E Argon? Spare me.Stick with a known brand of quality windows: Pella, Anderson, Marvin
spend the extra few bucks and get a well known brand name window.. just remember you get what you pay for!
From efficientwindows.org:
Low-emittance (Low-E) coating are microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a window or skylight glazing surface primarily to reduce the U-factor by suppressing radiative heat flow. The principal mechanism of heat transfer in multilayer glazing is thermal radiation from a warm pane of glass to a cooler pane. Coating a glass surface with a low-emittance material and facing that coating into the gap between the glass layers blocks a significant amount of this radiant heat transfer, thus lowering the total heat flow through the window. Low-E coatings are transparent to visible light. Different types of Low-E coatings have been designed to allow for high solar gain, moderate solar gain, or low solar gain.
Basically, there’s a coating that prevents energy from passing through which saves you money on your heating and cooling bills. I had these in a new house I built and the cost of heating and cooling it (a 3000 square foot house) was the same as what I was paying with an older 860 square foot home with older windows.
Definitely worth the investment.
better off with depot windows……you’ll have a better warranty too……and i don’t necessarily like the depot store ,,,but excaliber??? be safe not sorry
Looks like you`ve already done the homework, you have to make the final decision.