March Madness Sale

Score Big During Our March Madness Sale!

Don't let your windows play weak defense any longer! Indow window inserts are your defensive powerhouse against window drafts and noise.

Sub in the insulation all-stars for your windows and score big with 10% off 3-5 inserts, 15% off 6-9 inserts or a slam-dunk 20% off 10+ inserts.* Achieve peak performance in window comfort and efficiency without changing the look of your windows. Become a Comfort Champion and invest in decades of reduced energy costs with Indow window inserts.

Connect with a Fit Specialist to craft a savings gameplan

STANDARD GRADE WINDOW INSERTS

Decrease energy consumption by an average of 20%, reduce noise by up to 50%, and keep your home warmer in winter and cooler in summer.

  • Standard 3' x 4' window cost: $372
  • 10+ sale price per window: $298**

ACOUSTIC GRADE WINDOW INSERTS

Enjoy all the benefits of Standard Grade window inserts PLUS up to 70% noise reduction.

  • Acoustic 3' x 4' window cost: $480
  • 10+ sale price per window: $384**

Talk to a Fit Specialist today to get a free estimate.

  • * Discount valid for residential customers who start an order by 4/4/2025 and submit final payment by 4/30/2025. This offer may not be combined with any other offers or discounts.

  • ** Shipping and sales tax are not included. Shipping costs vary by size of order and location of delivery. Consult with a Fit Specialist for a shipping quote.

The Best Offense Is A Good Defense

Imagine a basketball's worth of cold air escaping your single-pane windows every hour (double-panes aren't much better!). That's like throwing money out the window! Stop the energy drain this March Madness.

Defend against leaky windows with Indow inserts

Level up your insulation game against leaky windows, maintaining your comfort and saving you an average of 20% on energy. That's a win for your wallet and the planet!

Save More With Tax Credits

You can save 30% on the cost of energy-saving Indow window inserts with tax credits from the Inflation Reduction Act. With these tax credits, you can lower your tax bill by up to $1,200 by purchasing approved energy efficient window inserts - that's over $100 in savings on a standard size Indow window insert!

The best part? Indow's insulating window inserts qualify for this tax savings of up to $1,200/year on energy efficient home improvements.

Stack up towering savings with IRA tax credits

Why Choose Indow?

Our inserts are custom cut to your specific windows in virtually any size or shape. They come fitted with our patented compression tubing in a variety of colors, so they'll blend in and slide right into place without any need for hardware or professional installation. We manufacture our inserts right here in the USA and ship them directly to your home in the US or Canada within weeks of your order.

Connect with one of our Fit Specialists today to ensure Indow inserts are the right solution for your home and get a free estimate. We'll answer any questions and guide you through the steps to measure your windows and maximize the comfort of your space.

  • ‡ Pricing for non-rectangular windows varies by shape. Inquire for a customized quote.

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.

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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.

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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

1530 Reviews

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    I bought these bedroom inserts primarily for sound reduction. My house is about a mile from a busy train track and several miles from an interstate highway with an exit close that has trucks braking. These inserts completely eliminated the interstate noise and the train rolling noise, and dropped the train whistle noise to very faint. No more waking up at night and counting trains. I measured carefully and the fit was perfect, and with the blinds open I can't even tell they are there. For info my jam depth allowed approximately 3" gap from the top window pane and 2-1/2" from the bottom and still allowed the use of an inside mounted 1" blind. Using the new compression blinds that install with no brackets allowed that much gap and maximizing the gap distance is important for sound reduction. I also installed jam stops specifically for the Indow insert to get it to the right place.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    Our Indowindow inserts arrived thoughtfully packed and quickly shipped. They were easy to install and fit after using the pre-supplied Lazer measurements tool from indow. The fit was perfect and we immediately noticed a huge change in noise levels for the better. I added some brightly colored cord to the d rings incase of fire removal and escape through the window is needed. We are very satisfied with our purchase and we highly recommend Indowindow inserts for noise issues.

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    We moved into a home right next to a busy highway. The window inserts have allowed us to sleep without wearing earplugs. The difference is dramatic. Please note that the inserts don't reduce noise to 0; this is especially evident with large rock hauling trucks. Even though we still hear noise from these (VERY) loud sources, Indow Window inserts have been able to dramatically reduce the noise to the point of allowing us a normal existence in our home. Thanks Indow!

  • 5 Stars ⭐️⭐️⭐️⭐️⭐️

    These windows are great! They have improved the quality of our home with reduced thermal loss and reduced noise level! The temperature today is 93° outside, our split system is set at 73° and the inside house temperature is 74°! Before the install of these windows the inside temperature with these conditions would have been 76°! Last night I noticed an ambulance going by. Normally the first thing I recognize is the noise, but last night I didn't realize it was an ambulance until I saw the flashing light! Hannah did a wonderful job coordinating the measurements and the sale! I would recommend these windows to anyone!

  • 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!