I was under the impression that it would help with noise level as we live on a busy street with lots of traffic. The noise was only intensified. The salesman never told us about the different payment options or that if you buy four you get one free (ha, ha). We were told they had their own installers and that they didn’t subcontract them–wrong, they did subcontract the job out. When the main reason for replacement windows was for noise and they said it would be improved, but it’s far from quieter. My husband may be happy, but Mommy isn’t! Husband can’t hear, Mommy can!! Our old windows kept the noise down better than the new ones!!!! What a waste of good money, windows are not cheap. Even the ones from Home Depot in our old house kept the noise down better than the new Andersen’s.