Polaris is an old line company that I trust. They have been pretty good through the years. However, "Energy Wall" is not one of their window lines. They have Ultraweld (premium), Thermalweld (mid grade) and Value Smart (basic budget) windows

 

The Energy Wall web site doesn't give me any confidence in them. No address, no way to contact them, no solid information of any kind. Made in China?

 

I'm thinking the homeowner has been doing some internet research and found what someone said is the best thing ever.

I know nothing about Polaris or energy wall.

I've just had similar conversations with potential customers over the years. It's always the latest and greatest thing, they just can't seem to find it for sale anywhere.