Are all EnergyStar windows made with Low-E glass?

Question

My Pella Thermastar windows were just delivered from Lowes. We ordered Low E glass but there is nothing on the windows that says "Low-E". The guy at Lowes said if it has the EnergyStar sticker on the glass then it is low-E. Is that true? Are all Energystar windows made with low-E glass?

Answer 1

EnergyStar is really based on past preformance, and wether it performs at a certain percentage better, say 10%-20% more efficient, so not neccessarily. the pervious answer was correct, generally low e II, with or without argon is an upcharge....if you paid for it.....is should say on the NFRC sticker. It should also tell you the R and U value as well as the design performace information.


former window distributor trainer

Answer 2

We just moved to FL, had all of our windows changed out to Low E from regular windows. There was a difference (a drop) on our electric bill, and a huge difference with the afternoon sun/heat pounding against the old windows vs. the new Low E ones. We had ours done a year ago, and I don't know what "upvc" means, however windows do have a grade, maybe that's in reference to the grade? When in doubt, check various places such as Lowes and Home Depot or even specialty window places just to get further insight, education and information before investing. This is also a good way to verify prices amongst competitors. As the market for home improvement is very slow, you have the advantage at this time to negotiate with independent dealers (if this is who you end up chosing). Just a thought, independent window contractors may deal with just a few window suppliers, therefore makes their resources to the consumer limited as well. There's a possibility that this contractor is pushing what he has, without coming across this way, to you. Be aware of contractors in general. Verify if they are licensed and bonded (don't know what state you're in, each state is different, check out the State Contractors Board for details that'll protect you as the consumer). Some states require that contractors for windows be licensed and bonded. We thought we were savvy shoppers, aware of what to be cautious of when choosing a contractor, however, a few will slip between the cracks. We were overall satisfied with our window guy. We chose an independent. He was good and his prices were fair (better than Home Depot and Lowes). We were out of state when the installation was done. Suggestion: Someone be at the home when any work is done (This was our disadvantage at the time) Hope this tidbit of consumer insight helps.

Answer 3

I put windows in a few years ago and it was absolutely not the case then. I had to pay extra to get low-E. Things may have changed but I would check with the manufacturer or some regulatory agency.

Answer 4

yes they are

3/4" insulated glass when enhanced with LowE and Argon Gas achieves a rating conforming to the Energy Star criteria

Answer 5

i dont think they are call the manufature and ask they have to tell you