Products reviews

Extremely pleased with the performance of these inserts on a 70 year old house! Even during single digits in the North Georgia mountains snow storm the house remained toasty warm and no draft. The difference is remarkable.

I would rate you 10 stars if that was an option! From initial ordering to the finished product, I am extremely pleased. (updated)

Very happy with your inserts. Fit perfect and look great. I mistakenly ordered the wrong size and they sent me replacements without charging me for the inserts or shipping. A great company to do business with and a great product. Thank you so much.

These are fantastic. Overnight was minus 10 oF. Saved money right out of the box. Thanks. No drafts.

The window inserts make the windows look as if nothing has been added to them; and they do keep the cold draft out in MN winter time. Thanks for the great product.

I’m really happy with the window inserts. I had to delay the delivery and it was delivered perfectly in time, just as promised. All window inserts fitted well and checking my electricity bill I found out that energy consumption went down 40%. I’m curious to see how much it will be in winter.

I cannot express how highly we regard this company and their window inserts. The quality and quick service was great!!
We were concerned about the inserts not working because our windows have a lot of quarter round that might prevent a tight seal. After trying out one window we found the inserts still fit great! We ordered 11 more for the rest of our windows. They are so easy to install and made a difference right away!!! Can't express how great these are. We could not afford new windows and our heating and cooling bills were very high. The value is fantastic. We can check our energy usage online and have already seen a reduction. Be sure to measure carefully. We measured one window incorrectly and had to re-order. The customer service was far above what we even expected. They worked on getting us a replacement insert as quickly as possible and were very understanding about our mistake and didn't make us feel bad for not measuring correctly. Again we would highly recommend the company and the window inserts.

Customer service is outstanding. Received my order of six large inserts in 8 days. They all fit snug. Have a skylight in kitchen and placed one there as well as the window over the sink. The kitchen not only felt warmer but the thermometer showed a 2 degree increase in temperature within three hours. Follow the on-line instructions and you should have no problems. Only drawback are the color choices. Maybe an almond or beige color to cover all the bases. Fantastic product.

I live on a lake approx. 90 miles north of Houston, Tx. My house faces north and has 12
single pane windows across the front that give me an unrestricted view of the lake.
Natural gas is not available where I live, so I have electric heating.

In 2009, I experienced several "blue northers" (cold fronts from the north) that resulted in very high electric bills (over $500 a month for three months)
I considered double pane windows to replace the existing windows, but every cost estimate I got was in excess of $3500.00

I searched the internet and found the window inserts and purchased 12 inserts in 2010.
Since installing the inserts, my heating bills have been reduced by approx. 50%.

I highly recommend using these inserts to lower your heating costs.

Don L. , Coldspring, Tx

I am over the top happy with my Energy Saver window inserts!!!
They have solved the problem of trying to keep a mid-century modern house warm. It is essentially a glass aquarium with large single pane windows.
It was impossible to heat or cool and prohibitively expensive to replace the windows..
I happened on this site, read all the reviews and was impressed enough to order a sample window.
The quality was excellent, gave it a trial run and ordered windows for the whole house.
The ordering process was easy and help is only a phone call away. The windows arrived as promised and were well packed.
We made an error on measuring one window, called Customer Service last Thursday afternoon and got a call today (Monday) saying the replacement was shipping today and there would be no additional charge.
Customer Service is Superior.

Thanks to everyone at Window Inserts I am now warm and am looking forward to being cool come summer.
PS
I know my energy expenses will be lower because my heating system is not running constantly.

Thanks again,

Carolyn,
a very satisfied customer!

the initial test windows that i ordered immediately eliminated the drafts from the windows that i covered. i went back to eric and jessica and ordered more for the whole house.
the product does do what the company says it will do. i live in the north east in a 1970's home. my windows have been very drafty.
i am only sorry that i did not learn about this product sooner i strongly suggest that this product be used in any home. the inserts look perfect and blend into the window. even my wife likes them

we have a 1920's home with original windows.the walls and attic are insulated very well but the house was still very drafty. we bought 18 inserts for the first and second floor. What a difference it has made. No draft at all, not even the draft that used to blow down the steps. I highly recommend this product. We live in south central Minnesota. Thank you Eric.!!!! you were great to work with!!

Those arrived and they are GREAT!!! VERY helpful for our air infiltration in our 1853 house.

Thanks for sending them! I wish I’d ordered them sooner and instead of the 5 x more expensive magnetic interior storm windows. The magnetic ones are excellent, but not sure they were worth that much more money.

Thanks again!

Bought and installed 10 inserts several months ago. I live in North Dakota where cold and wind is intense and these have helped greatly with draft from windows and heating bill.

I live in Northern Ontario, Canada and as I could not find a similar product in Canada, I decided to purchase inserts from Energysavr. I did a trial of 11 windows. Unbelievable product! -45 celcius and no drafts. House nice and warm. Excellent product. Received personal phone call as well. Customer service above and beyond. Thank you for making a great product

I purchased these inserts without my husband's knowledge and this was the BEST money I ever spent. I have had the inserts in for only 3 days, put them in myself, and the difference in temperature near my huge bay windows , each 93 inches wide, is barely perceptible, I came home to a power outage, temps in the teens, and my house was still warm. I intend to purchase inserts for the rest of the windows in my home. Thanks for such a wonderful product!

Very pleased with our new window inserts—no more chipping ice off the steel window frames, no more pools of water on wood window sills, not to mention the dramatic drop in cold air coming off the windows.
Thanks,
Syd

I received the window inserts today and have already installed them. Our home is in a historic section of Beacon Hill in Boston so we are restricted as to what we can install. These window inserts cannot be seen at all and have really cut down on the drafts through the old window sash. I would recommend this product.

I installed 57 window inserts in my home a year ago.

I have been in my home 50 years. In winter the north wind would blow thru cracks around windows.

After installing window inserts fitted perfectly to each window my house has no drafts. It is like being in a warm nice cave.

Dallas, TX

Amazing!!! My daily power usage was $24.00.
After the inserts, it is $10.00
They just paid for themselves.

Roswell, GA

Eric, you’re a genius, man! Your shipment arrived damage free, and the installation was a piece of cake. I just installed 13 window inserts in under and hour, and most of that time was devoted to working around the shades and curtains to gain access to the window openings. Many thanks for a great engineered product and your fine customer service.

My wife and I recently received 30 inserts, and we are delighted by them. Each one fitted easily in the space it was made for, and we could instantly feel their effectiveness. The service you provided was excellent, and we can highly recommend these interior storm windows to anyone living in a cold climate!!

I recently ordered 5 of your window inserts for my basement egress windows that are “exposed” to daylight. I received them today and installed them. They fit perfectly and were very easy to install. I could tell a difference as soon as I put them in! The drafty air stopped immediately! We will be ordering more for some of our “West” facing windows in the upstairs. Thanks for a great product, lightning fast shipment and saving us money on our heating bill!

Morton, IL

We received and installed our 18 window inserts back in October and installed them just before the cold winter hit Downeast Maine in November. Since mid-November, it has been unusually cold here, average temperatures in December at least 5 degrees below normal. The inserts have performed wonderfully; indeed, I don't know how we could have survived in our old, un-insulated farm house without them. You have a great product, and you handled our order and delivery with a very high degree of competence. Many thanks!

Sorrento, Maine

I've had my Windowinserts for a year now and can now give an honest review of the product. Working for a utility company, I'm always looking for energy efficient ideas and products. From my first contact with Eric, to delivery and fit, Windowinserts have surpassed my expectations. Living in a 2 story house, there used to be a distinct temperature change when walking from the kitchen into the living/dining area. Both areas have large double pane windows, and used to feel the cold radiating from the glass, but no more. We recently had a cold snap, with temperatures dropping below zero, and there's still wasn't any cold radiating from the windows. What a difference! Upon Eric's recommendation, I left the inserts in during the summer, finding it easier to cool the house as well. I highly recommend Windowinserts for anyone frustrated with cold, drafty windows, as a cost effective alternative over replacing existing windows. Thanks so much and keep up the good work.

Tried 1 window last year on a window we could not keep plastic on even with duct tape. These actually work. better. then I thought they could. Ordering the rest of Windows this year.I know they can stop a 40 mph wind