I have windows that are supposed to be Low-E Argon, but I do not see anything printed on the spacer between the glazings. Does this mean that it is not Low-E Argon? The windows are from a larger company that distributes nationally. Is there any way to test the windows?
Answer:
There's no real way to test them that I know of but surely you can dig out the receipt you got when you paid for them. You'll have to take that to the local retailer.
