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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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


4.49 Average 1423 Reviews logo

Charles T

Working with Indow has been a great experience from start to finish. They answered all our questions & guided us through the whole process. We ordered 15 inserts & they have reduced the Highway noise that we were experiencing after buying our house. A great product & innovative company.

Posted 1 day ago

Sue W

I live 20 feet from a busy road with lots of trucks. We almost didn't buy the house because of the noise. my house is the perfect candidate for indows. After installing them (myself. .. directions were so easy) we can barely hear any trucks noise at all. Indies live up to their claim and has made a huge difference.

Posted 2 days ago

Richard H

I am very pleased with the noise reduction and heat-trapping effects of my Indow inserts. I bought three small inserts as an experiment for the noisiest part of the house all year round, and where it's cold in winter. They have done beautifully well in sealing out both noise and heat. My only issue has been to get one of them installed perfectly straightly on one side, but it was done in a difficult location and isn't that important. They are also quiet expensive, but I may get a federal tax rebate on them.

Posted 6 days ago

Hee D

It could have been better if the pallet was collected after the delivery. Also the inserts are more beneficial for picture/fixed windows rather than open windows. The price of insert are expensive.

Posted 1 week ago

Larry S

I was pleasantly surprised how well the appearance after installation, perfectly clear, plus reduce the noise from the outside more than I expected. I would definitely recommend anyone looking for noise reduction to consider these. I will be purchasing more as time goes on, thank you Indow

Posted 1 week ago


Called about price $1000.00 For 2 small windows asked about energy savings? They said no guarantees depending on location and almost other factors, why would I spend that money w no guarantees

Posted 1 week ago

Christie R

It has cut down noise tremendously and is definitely more efficient with keeping our cooling in and heat out this summer.

Posted 1 week ago

William U

Indow is a trendsetter in eCommerce. They make the entire process of ordering, purchasing, and installing their product very easy for any walk of life; and, their communication processes are excellent. The inserts I purchased and installed were just as described. They are effectively blocking soundwaves, but not vibration, which was discussed during my initial call with an Indow Representative. I would recommend Indow window inserts to a friend.

Posted 1 week ago


Our window inserts have decreased road noise in our bedroom by 75 percent which we are very pleased with. The whole process was extremely simple and organized. Everyone we dealt with was professional and helpful. The inserts were simple to install and I would recommend to others.

Posted 2 weeks ago

Jeanne S

They make it easy to measure and install and it does reduce the noise as I live next to a busy highway. I am happy with the purchase.

Posted 3 weeks ago

Ivan L

We have a multi-story building construction next block that starts at 7 a.m. daily and a busy street a few blocks away. Before the insert was in place in our bedroom, we heard every piece of construction equipment there, including the obnoxious beeps from vehicles backing down in the lot, and all of the emergency vehicles passing by on the avenue. Now, this sounds like something happening twenty blocks away, barely noticeable. This is a huge quality-of-life improvement from day one of the insert installation.

Posted 3 weeks ago

Stan B

All fit as planned and are good

Posted 3 weeks ago

Cassie M

Overall very easy process from ordering to install. Was just hoping that the sound dampening would have been a little better.

Posted 3 weeks ago

Dan C

Effective and frequent communication from Indo Window starting with the order process, through production and post-delivery. The insert fit was excellent, fitting snuggly. The panel is quite effective in reducing noise. My wife was sleeping in the basement due to traffic noise. She is able to sleep in her bedroom again. Overall an excellent experience!

Posted 1 month ago

Lynett P

Great product. Arrived a bit dirty.

Posted 1 month ago

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bedroom with window with Indow inserts installed for soundproofing in San Francisco


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