Product reviews: Easy Order Window Inserts Online

Wanted to thank you for a well-made product. Quality and sizing were right on. The clarity of view was better than expected. Plan on ordering more in the future.

Great product!

My 65 YO apartment building has drafty windows -- and my apartment has windows facing all directions so no matter which way the wind blows, I was freezing in the winter. We got two nor'easter snowstorms this winter in NYC and the inserts blocked the wind so effectively I didn't need to put space heaters on in every room and wear my winter coat indoors just to stay warm. These window insets have been life-changing. Highly recommend. (Great customer service, too!)

Very pleased ! We were looking into window replacement but couldn't afford so after some research found windowinserts site.We have pretty big windows and since the install noticed walking past them we didn't feel the cold as much as before.
They were very helpful with working with us to make sure they fit and shipped fast

Hello, I just wanted to share with you my newest electric bill. My electric bill for January, 2025 said I used 1560 kWh of electricity. My new bill for January, 2026 showed I used 889 kWh! That is my first full month with my window inserts. That is AMAZING!

My first electric bill dropped 40 dollars a month with only half of my windows finished.

Thank you for this awesome surprise

We purchased 12 Window Inserts in 2023 for use on our 3 season sunroom at our lake home in Minocqua Wisconsin. Our hope was to add a few extra months of use to this room with the use of a small electric heater. We could not be more happy with the results. We were even able to use the room 24/7 the entire Christmas week when family visited as outside temperatures dipped as low as 6 degrees. I cannot say enough about how pleased we are that we can use this room "almost" year round. (I didn't attempt to heat the sunroom last week at -31 below zero).

I live in a pre-war building in NYC, and just six weeks ago, when it was around 35 degrees outside, I was sitting in my room working in wool socks, sweatpants, and a hoodie—and still freezing. I tried the plastic window insulation kits, which helped a little, but they still let in noticeable drafts and honestly looked terrible.

I finally came across Window Inserts and decided to give them a try, especially after seeing other companies charging two to three times more for similar products. The difference has been night and day. It’s now the coldest weather NYC has seen in a long time (around -5 with wind chill), and I’m comfortably sitting in my room wearing shorts and a sleeveless T-shirt.

The inserts were lightweight and easy to install—I set them up myself in about 15 minutes—and they work incredibly well. They also look clean and polished in the windows, unlike the plastic kits. On top of that, the pricing felt very reasonable compared to other options I researched, and customer service was excellent throughout the process.

This has been an absolute game changer. If you live in an older building or are struggling with drafty windows, I highly recommend Window Inserts.

Hey Eric just letting you know i got my order today they are installed and I'm no longer feeling the chill. They are great and i will be singing your praises to everyone i know. Omg. I wish i had done this sooner. I am so happy. Best money I've spent so far on this money pit. I will be ordering more for my last two bedrooms. Thank you so much.
Happy customer in Michigan. -4 right now

They are awesome and took 10 mins to install. Heated my living room by 10 degrees. I'm ordering more.

Thank you for exceeding my expectations.

We were looking for a quick, simple, reasonably priced solution to help seal the drafts around our old aluminum windows. We found the answer that checked all the boxes with EnergySavr window inserts. The inserts fit my dimensions perfectly and were fairly easy to install. Every panel fit very snugly and securely with little effort. I couldn’t be happier with the service I received from windowinserts.com. The owner even texted me after receiving my order with suggestions on minor modifications that would make the inserts a little easier to handle and install, plus save me about half of my shipping costs. Thanks for a great product and for great service.

What a great product you custom build and sell. Just installed four of them (48"X36") in my 30 X 40 insulated pole building . The wind this past weekend in Northern Illinois was 50 mph gusts and teens for temperature but could keep the shop at 70 Degrees. A few weeks ago before installation we had similar weather and could only maintain 60 degrees.

These were very easy to install although for a couple of the bad air leaking windows, I installed blocks to keep them from pushing out of the frame. So glad I found your product and took a chance and purchased. Very easy to order and install, and the shipping and delivery was very prompt. Thank you again for you fine product and service

We would like to rate your product and customer service at 5 stars. We have been telling all of our friends about your product I hope they contact like we did!

Wow, I LOVE the inserts!

I am so impressed with how easy they were for me to install, by myself.
So far, so good with them staying in place - and today will be a test because high winds are expected this afternoon.

I appreciate your customer service and I hope to add more in this 100+ year old house of mine with lots of windows.

Wanted to get you a big shout out for the window inserts.

I knew they would work, but not only worked, they actually exceeded expectations. I knew when I put up the first panel insert, I could immediately tell the difference. My central heat stopped cycling every 20 minutes, but went to every 45 minutes.

Thanks again!

Please tell everyone concerned about my measuring capabilities and my understanding of what the inserts are designed to do that the inserts arrived today and I put them up by myself. They fit perfectly. FYI I’m going to be 83 on the 14th of this month, which is of little consequence since I’m planning on living forever.

Five years ago I bought a house in Michigan that was built in 1880. It needed a lot of tlc but the windows with their wavy glass and original woodwork made me fall in love.

I found your company by surfing the web and took a chance. I measured my windows, entered my info on line, paid and pushed submit. I was a little nervous but excited too.

I received my large order of window inserts about 2 weeks later, from your company, and installed them immediately! I couldn’t be more happy with the way they fit and keep the cold air out!

I open my curtains every morning and they are not cold to the touch! They are warm! The air in my rooms is also warm! I am so very happy that I chose you to help beautify my old home.

Thank you from the bottom of my heart

Good morning. We received our window inserts, way up here in Northwest Maine! They have been installed for three days and they are AMAZING! The room is retaining heat better than ever. The difference was immediate. I can now relax on the window seat without draft, or the cold air that was emanating from the glass. We are very appreciative of the quality of the product and real customer service. You guys should get some kind of consumer award.

Thank you very much. Happy Holidays.

Well need I say they are the BEST item I've purchased in a while .. had a little son in laws help but they are astounding .. will see when we really get a big chill her on Long Island..

I placed my order one year ago yesterday but waited to write a review to see how well they really worked. The window inserts are perfect. I was very hesitant on purchasing these, however I am so happy that I did. Customer service is out of this world. I picked the wrong split, Eric noticed it and called ME before processing my order to let me know that I could save money and the inserts would actually match my window split exactly, if I went with his suggestion. My single pane windows in a two year old townhouse are worthless, the inserts have stopped the drafts, rattling screens, and the dirt that tends to blow in. I ordered inserts for 7 windows and didn't think about the basement window or patio door. I am hoping to order the last two soon. I have shown and recommended these inserts to friends and neighbors and they have been very impressed at the quality, ease of inserting, and how you don't notice the inserts. My heating bills have been reduced and I'm pretty sure that the 2025-2026 WI winter is going to prove a warmer house again.
Thank you for a great product that is made in the USA!

Wow! So much more than I thought! So sturdily made, so easy to use and makes so much of a difference. I bought for my screened in porch and I was able to install them all by myself as a 65 yo. The ordering was easy, direct contact with a representative who helped me so much. I love the numbering of items which eliminated the need to figure it out. Just love the entire process. Thank you Window Inserts!

My husband saw the ad on TV and we checked it out because we live on the southside of a northern Minnesota lake, and the north winds are brutal during the winters. Today, we put them in the windows for the 5th year in a row, and the savings is so well worth it, plus the warmth stays in the house instead of going out the windows!
And the service when we first ordered them! A++ One of the owners called me and asked if we followed the video to measure them...because they are custom made. So I told her the truth...my hubby knew how to measure. And yes, we'd do it the right way this time. Of course, they came perfect for our windows and quickly! We would recommend them, and have, to several people so far.

I bought three sets of inserts for original Andersen single pane casement windows as I did not like any of the options for replacement windows, That was 2019. They have held up just fine, cut down on drafts. I only remove them for cleaning as our NEW heat pump is either heating or cooling, no need to open windows

These window inserts are made exactly as I specified in my order and they are made well. Tight window inserts with no wrinkles. Frames are strong and fit well. Packaged for shipping very well. Nothing to dislike and a good price too.

We own a historic 1833 plantation home that we’ve renovated into a charming B&B. With many original (and old) windows, preserving the home's character was a top priority for us. While we updated the windows, it was the Window Inserts from windowinserts.com that truly completed the transformation. The best part? You can’t even tell they’re there—they’re invisible, yet so effective. Our guests consistently praise how these inserts maintain the authentic charm of the home.

windowinserts.com went above and beyond to assist us, providing exceptional communication and a delightful experience throughout the process. Highly recommended!

I am super happy with this product! I installed them the moment they arrived, which by the way was faster than I expected. They were well packaged and fit perfectly into my 6 living room windows. That night happened to be an unexpected cold snap, and I was so shocked at how comfortable I was in my living room. I had to check the outside temp a few times because I was so used to cranking up my heat on days like this. They look great too. Like they've always been there. Not to mention that I checked around and the price was great, and they are all-season which other brands aren't necessarily. Customer service is great. Eric had a question for me and I'm glad I got to talk to him as he gave me even more confidence in this product. It has saved me so much money and was so easy! I'm going to be recommending these to my neighbors who were complaining about their windows too!