Block Drafts & Save Energy with Insulating Window Inserts

Poorly insulated windows don't just create uncomfortable chills, they also contribute to skyrocketing energy bills. Indow offers the perfect solution: innovative window inserts designed to stop drafts, improve energy efficiency, and enhance your home's comfort all year round.

The High Cost & Deep Discomfort Of Drafty Windows

The human body loses most of its heat from the head, hands, and feet. That's why we wear hats, gloves, and heavy socks when we're trying to stay warm in the winter.

Similarly, drafty windows are the #1 source of temperature loss in the home and the leading cause of wasted energy.

The average single pane window lets in a basketball worth of cold air every hour (double pane windows aren't much better!), which is why it can be so difficult to keep your home a comfortable temperature without running the heat all day.

  • Single Pane

    =

    A basketball's worth of cold air/hr

  • Double Pane

    =

    A softball

  • Indow + Single Pane

    =

    A marble

Imagine all that wasted energy just flying out of your poorly insulated windows and creating uncomfortable temperatures, high energy bills, noise pollution, and more.

If you experience any of those issues, that's a sure sign you need better window insulation in your home.

Insulating Your Windows Is Easy With Indow

Indow window inserts are a revolutionary solution for insulating your existing windows. These custom-made inserts fit snugly within your window frames, creating a secondary layer of insulation that:

  • Blocks Drafts

    Stops cold air infiltration in winter and hot air intrusion in summer, resulting in a more comfortable living environment.

  • Improves Energy Efficiency

    Reduces heat transfer, significantly lowering your energy consumption by an average of 20% and saving you money on utility bills.

  • Enhances Noise Control

    Acts as a sound barrier, reducing outside noise pollution an average of 50%, creating a quieter, more peaceful home.

SEE IT IN ACTION

Our acrylic window inserts create a barrier of trapped air to keep cold out and heat in. See why acrylic aces our insulation test!

The Affordable Alternative To Window Replacement

Indow window inserts are an incredibly cost-effective alternative to window replacements. When you factor in labor and inconvenience, window replacements can cost over $1,000 per window and still only reduce energy bills by 15%!

You'll also need to coordinate having contractors tear out your existing windows and the disruption to your day-to-day life. To make matters worse, the total costs of window replacements (including labor) aren't a great option for increasing your home's resale value.

Average Percentage Saved on Heating & Cooling Bills

20%

30%

15%

INDOW

REPLACEMENT WINDOWS

Invest in Comfort & Savings

Our team of Fit Specialists are available to ensure you get the right product and the right solution for your unique window problems and will make sure you get our best available pricing.

So what are you waiting for? Get in touch with us today and put your window worries behind you.

The Indow Window Difference

  • Guaranteed To Fit

    Your inserts are custom made to your exact window measurements with our proprietary compression tubing, ensuring a nearly airtight seal and backed by our Snug Fit Guarantee.

  • Quality Built For A Lifetime

    Your inserts feature premium insulating acrylic that is built to withstand daily use and engineered to perform for the lifetime of your home. Guaranteed to be free from defect by our Lifetime Warranty.

  • Easy To Install & Remove

    Installation is simple - no tools or modifications to your existing window frames are necessary. Simply slide them into place in seconds and experience immediate results.

  • Handcrafted In The USA

    Each insert is proudly handcrafted in our Portland, OR facility using materials sourced right here in the USA, which allows us to maintain rigorous quality control and meet our exacting standards.

Customer Stories

Indow window guide - research by topic.

Customers see immediate benefits

Read what our customers are saying about insulating drafty windows with Indow:

“As soon as they installed the Indow inserts, the chill disappeared. The Indow inserts were the missing piece that made my home both comfortable and energy efficient,” raves one consumer.

Our inserts have even been featured twice on This Old House! Read more case studies on how our Indow window inserts can effectively block drafts to create coziness in your home.

Trusted Since 2010

Indow has insulated more than 23,000 buildings - helping reduce carbon emissions by nearly 200,000 tons - and creating comfort across the US & Canada!

Excellent

4.49 Average  Rating

1526 Reviews

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    Excellent product, support, and very clear instructions. We look forward to installing these on all our windows.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    I ordered the "acoustic grade inserts" for my bedroom to reduce road noise. They work exactly as advertised. Are they soundproofing? NO. Do they reduce noise to acceptable levels? YES. Compared to other solutions on the market (replacement windows, glass inserts etc) this is much more affordable. However, if you are looking for actual soundproofing, you need to spend more money and get something else. As a bonus, the inserts are tight fitting and have reduced drafts.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    We have single pane historic windows in our house in Newport RI. I was looking for a great solution to both temperature and noise. I decided to try the acoustic indow product.

    I am thrilled with the process and the product. James from Indow was super helpful in answering questions. The laser measuring kit was easy to use and gave you confidence in your own measuring ability as it checks your work. The 4 indow products i ordered came well packaged and were easy to put in.

    Finally, the indow inserts look great and work great. We can no longer hear every conversation outside and the birds don't wake us up every morning. My wife didn't even know they were there. They blend in and can't see them unless you look.

    I highly recommend these. More cost effective than custom storm windows, they look better and you can easily install or remove them as you need.

    Fantastic product and service.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    There work perfectly and I can't even tell they are there. My windows look the same but NO noise!!!

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    Excellent servie and support from start to finish!

    So satisfied with my first purchase, I got more indows!

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    We installed the windows in our four seasons room We got some 85 degree days recently and the area stayed amazingly cool usually we would have the AC on it was not needed !!!

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    Indow has established the complete breadth of custom service, from initial enquiry to being very responsive to "after-sales" questions. Ours was and out-of-the ordinary project involving casement windows in a solarium and the end result turned out quite perfectly. Access to information online, instructions arriving with the delivered windows, and answers by phone insured we "enthusiastic amateurs" completed the job to satisfaction.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    I am very pleased with my Indow window inserts. I have a very old house and am near a busy road. I wanted to reduce the noise. I've just installed them and find a considerable reduction in traffic noise. They definitely were worth the cost. The measuring process is quite detailed but easy to follow and my inserts fit perfectly in crooked, 265 year old openings. The company representative Hannah Hendrickson

    was very professional, knowledgeable, and courteous. I highly recommend the Indow

    company.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    I appreciate everything about the whole Indow window process.

    Scheduling and holding a consultation online was easy and seamless. I consultant with KAYA, and he provided a thorough easy-going no pressure to move forward until I was ready consultation.

    Incentives were clearly outlined if I decided to move forward and order to be able to make my inserts even more affordable if I acted in a timely manner with measuring and submitting my order as well as returning the measure kit.

    The Indow inserts arrived within the expected timeframe and installing them was very easy. One of my favorite parts was watching how to install video, because they used humor, and it really held my attention and put me at ease, allowing me to take in all the little details I needed to insert my Indows correctly.

    Within hours, I noticed a temperature shift in the room. It was cooler and more comfortable. The next day when I worked in my office with the Indows the landscaper was across the street with the leaf blower and there was considerable reduction in noise making it a low background buzz instead of a disturbance to the work I was doing. I’ve only had them installed for three weeks and I’ve been so happy with them. It was a great investment for that room in the house that I use for my office.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    A great product. Excellent fit. Greatly reduced outside noise. Easy to install. Very happy!! Match your frame color to your current frame color and they disappear. So glad I got them.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    Well it all starts with customer service. 10 out of 10. Brain McCracken did a great job. The waiting period wasn’t long considering they had to make the window inserts and measuring the window units with the laser was actually fun. Worth every penny!

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    They are working great! Very happy with the purchase.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    I'm enjoying the units, however will need to wait until next year's colder weather to get a truer feel or read on how well they work - thanks

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    They work very well for my 3 Bedroom windows.easy to install.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    I purchased two Indow window inserts for two west-facing bedroom windows. These windows are exposed to the hot afternoon sun, making it difficult to cool the bedroom, and there is considerable outside noise. The Indow inserts work great at reducing the outside noise and keeping my bedroom cooler. I absolutely recommend Indow window inserts.

Indow For Your Windows

  1. 1

    Request a Free Estimate. We'll provide you with a preliminary estimate based on your basic window dimensions. It's quick and easy!

  2. 2

    Measure your windows with our easy-to-use laser measurement kit. We'll guide you through the simple process, ensuring a perfect fit.

  3. 3

    Customize your inserts to match your needs and your aesthetic, with tubing colors that seamlessly blend into your space.

  4. 4

    Transform your space with custom-crafted inserts shipped directly to your home, ready to fit perfectly in your windows.

Zip / Postal Code

WE SHIP TO YOU!

You're one step closer to creating more comfort & quiet in your home.

Congratulations!

To receive a customized estimate for your space or learn more about how Indow inserts can improve the comfort, quiet, & efficiency of your home, fill out the fields below.

First Name
Last Name
Email
Phone
Zip / Postal Code
Country

What issues are you experiencing?

(Optional) For a faster response, include the number of windows you'd like to insulate and approximate window dimensions (rounded up to the next inch) for each window:

We value safety and privacy. We will never share, sell, or rent your data to third parties not directly related to your purchase or consideration of our products. Read our full policy here.