We put 13 of these inserts into our 100… We put 13 of these inserts in our 100 year old farm house last spring and after almost a year, we can say we are extremely pleased with the results. They were a great alternative to new windows which would have been cost prohibited. The drafts normally felt on cold windy days are gone. Our home is more comfortable and the amount of LP gas used for heating has been greatly reduced. Visitors don't even notice the inserts unless we point them out. For us, the inserts were worth the investment.

Bad experience Bad experience. I bought this product expecting a noise reduction which did not happen whatsoever. The only response I got is that performance can not be guaranteed. It was so frustating because they dont give you money back either. $700 trough the drain.

New windows are really expensive and… New windows are really expensive and can ruin the look of a house. These Indows are not the cheapest inserts on the market, but they are really clever, do not require permanent frames, are made very precisely (none of my hundred year windows were still square) and our home was a lot warmer this winter because of them. Replacement window salespeople promise the world in terms of ease and energy savings and rarely deliver. These are such a simple alternative that do just as good a job.

Super easy to install I ordered these for a home which had lost all of its original interior storm windows to foolish previous owners. The measurement kit was easy to use and all of the windows arrived intact and fit properly. I probably spent more time getting them out of the box than I did installing them. I purchased mine for additional insulation and I look forward to the reduction in cold drafts this winter.

We had an A++++great experience from start to finish! We had a great experience from beginning of the processing working with James Werth who helped us understand how Indows worked and led us through the process! We got our inserts for 5 strategic windows where the highway gives a lot of noise, and we are superbly satisfied with the end result. The noise has been greatly reduced as was promised, so we are infinitely happy and satisfied! Highly recommended and end product fit perfectly!