Comfort, Soundproofing, & Energy Efficiency Solutions

The Best Way to Insulate Windows

Want to know how to insulate windows? Indow inserts are an easy, immediate, reversible solution to: cold drafts, noise, hot summer air, and fading hardwood floors. Indow uses precise laser measurements to create custom inserts.

Every insert fits your window precisely – even if your window is odd-shaped. We use durable acrylic panels, which insulate better than glass, surrounded by compression tubing so inserts fit snugly in place. This combination is the best way to insulate windows. Indow inserts don’t just insulate against drafts and noise. You can choose privacy or UV protection. Look through our solutions below to find the best window inserts for your needs.

Drafts & Savings

Indow insulating windows.

The best way to insulate windows against cold, summer heat, and save on energy bills.These inserts seal out drafts, insulating windows against cold while providing some noise reduction.

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Noise

Indow insulating windows

Our acoustic panels insulate against drafts and have increased noise reduction abilities. These inserts are insulating windows against outside noise to create a quiet, more soundproof environment.

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Lights & UV

Indow insulating windows.

In addition to insulating windows, our these inserts obscure light for privacy, block UV light for protection, or completely blackout a room for a dark, quiet sleep environment.

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All Products

Indow insulating windows.

All custom-made Indow inserts are great at insulating windows against drafts and noise. Different grades have additional insulating powers. See all our grade types to find the best window inserts for your situation.

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  • Popular Mechanics
  • Dwell
  • This Old House
  • Treehugger
  • The New York Times
Indow window insert compression tube color samples.

Customize Your Insert

Each insert has a tube that edges the clear acrylic. This tubing should blend into your window frame. It comes in three colors: white, brown, and black.

All our acrylic interior storm windows are durable, lightweight and made to blend seamlessly with the surrounding frame. Don't buy new windows. Make the ones you have just right with our precision measuring software, which will ensure a tight fit for your new window inserts. Just choose the grade you need and get started measuring. We're here to help at every step.

Insulating Windows is Easy

Indow window insulation inserts are custom made to fit your window perfecty. When they arrive, all you have to do is press them in to place to start insulating your windows. Our window inserts install in minutes with no mounting hardware. And depending on their size, you only need one person to put them in place.

Man installing window insulation inserts.

How to Insulate Windows with Indow Inserts:

  • Acrylic panels insulate against cold better than glass
  • Silicone tubing creates an almost airtight barrier because of its compression abilities
  • Dead air space between the acrylic panel & the glass adds more insulation
  • Dead air space & acrylic also insulate against noise

All of this means saving money from lowered energy costs. By insulating windows with our inserts, you also preserve your existing windows. The inserts press inside your window frame with no construction needed, ready to insulate immediately.

Customer Reviews

Excellent

4.49 Average 1505 Reviews

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Anonymous

WE just took delivery of the two window inserts we ordered. they both fit perfectly. The most difficult part of the process was me trying to hold the laser measuring device still while taking the diaginal measurment! The Indow team was helpful and the ordering process was catch free. the finished product is just as they described. once installed, you can not even tell that they are there. I will warn you, if you have larger sizes they will come in a pretty large packing crate/box to protect them so be prepared. The only reason for 4 stars insted of 5 is they have just been istalled and we shall see how effective they are at reducing cold air, but they fit so snug that I anticipate they will be very effective. Just in time too, because our area is in a low temp/low wind chill pattern at the moment.

Posted 1 week ago

Craig F

The Indow I ordered was a perfect fit. It looks great and is an extremely well made product. The ordering process was seamless.

Posted 1 month ago

Catherine J

Noise reduction by at least 50%! I cannot hear most car that drives by now. My bedroom is so quiet! Thank you!

Posted 1 month ago

Walter M

Easy to order and install.

Posted 2 months ago

Dianne F

Window inserts help with sound since I live facing the street and the highway

Posted 2 months ago

Dianne

This is a 5 star company from beginning to end. I purchased the I inserts in 2017 because the bedroom on the second story faced the street. These are very effective for street noise. Noticed a problem on one of the windows recently and they quickly took care of it due to their warranty. Customer service personnel are very helpful. The price of the windows was acceptable for top quality of sleep and less noise during the day

Posted 3 months ago

Charles C

Recently purchased the acoustic window inserts for a couple of old windows facing a busy street and they've made a huge difference in terms of noise reduction! The measuring process was relatively easy with the laser measuring tool that Indow sent and the windows were delivered faster than expected. Martin was easy to work with and we would highly recommend Indow to those looking for window inserts.

Posted 5 months ago

Dean C

Installed noise canceling acrylic Indow window inserts to deal with the road noise at my condo, 4 lane state road is 40 feet from the condo. Expensive custom fit, but oh my gosh, they cut the noise by 75%! Decibel meter app I trust shows a 6 Decibel noise reduction, average Db over 30 minutes. Turns out 6 Db is letting only 25% of noise through! I am one happy camper…

Posted 5 months ago

Harry T

The Indow team was great from start to finish! They were very clear about each step. After installing the inserts my home has been significantly while still preserving the fabulous city views. For anyone who lives in a noisy street or city like NYC I would highly recommend it. Leave the chaos outside and come home to piece and quiet.

Posted 5 months ago

Paula S

From start to finish, we were very pleased with our rep, Reed, and the other staff at the PDX will call! The inserts themselves are stupendous! We purchased six total for the noisiest, road side(s) of our home. The outcome was beyond our expectations! Not only did the three rooms that bordered the road become at least 70% quieter, the other end of our home did as well! I cannot recommend Indow inserts more! The technology makes sense to add the inserts rather than purchasing new windows. Great results and thank you! Paul and Paula Spilsbury

Posted 6 months ago

JD

Brian was very helpful & informative. He helped me order the correct windows for my needs. They were shipped with the utmost of care & arrived ahead of schedule. Ultimately, the Indow Windows have been very helpful in muffling unwanted noises & they have helped save on our energy costs. Thank you, Indow Window!

Posted 7 months ago

Cynthia M

Very happy with the reduction in noise. Easy to install and use. Great customer service.

Posted 8 months ago

Juli E

We are thrilled with our Indow window inserts! I'd been on the lookout for a more permanent solution to leaky windows in our third floor living space. I discovered Indow on social media but since then have learned of friends who'd had Indow recommended to them by their rennovation contractor. The entire process went smoothly with friendly reps at hand to talk through questions during measuring, etc. They fit perfectly and help us to maintain the beautiful design of the windows on our 100 year old home! Highly recommend!!

Posted 8 months ago

Jen F

Worth the money!

Posted 9 months ago

Elizabeth H

For townhouse living, this solved my problem with noise from my neighbor's with my kitchen window. A considerable decrease of noise indeed! Measurements were a bit frustrating so I recommend using a laser measurement device and following directions to use a string for the diagonal. They look great and were easy to push into place. I highly recommend as an alternative to buying a new window.

Posted 9 months ago

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