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Block Heat, Save Energy, and Stay Cool

Heat infiltrates through your windows and your AC has to work on overdrive, leading to high energy bills and a house that is still too stuffy and warm.

Do You Have Trouble Keeping Your House Cool?

Is your energy bill astronomically high in the summer? Running the A/C but not feeling comfortable results? Searching for how to insulate windows to keep heat out?

When the weather is hot, heat infiltrates through your windows and your AC has to work on overdrive, leading to high energy bills and a house that is still too stuffy and warm.

How To Insulate From Heat & Stay Cool All Summer

Indow inserts create an airtight seal around your windows that insulates your home and keeps the cool conditioned air inside.

The problem could be that your windows are underperforming – leaking the cool air out and letting the hot air in.

It’s time to give your A/C a rest by upgrading your windows.

Insulate and seal your windows with Indow window inserts – the most affordable way to keep your house comfortable and quiet (and save money) all year long.

Upgrade Your Windows to Maximize Summer Comfort

Sealing your windows is an important part of protecting your home against hot weather. Indow inserts create an airtight seal around your windows that insulates your home and keeps the cool, conditioned air inside. Our inserts stop heat from coming through windows while still allowing natural light in.

Additionally, Indow’s inserts help homeowners save 20% on their yearly energy bill , reduces outside noise by up to 70%, blocks pollutants like smoke or pollen from infiltrating through your windows, and helps regulate your home’s temperature all year long.

Cheryl Scott

These window inserts have solved so many of the problems with old houses and gorgeous old windows. It seals in the cool air (critical in Florida) and seals out the dust and noise from the park across the street. WOW!

Let Us Help You

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

WE SHIP TO YOU!

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

Congratulations!

Fill out this form and one of our Comfort Experts will be in touch to prepare a specialized estimate for your space.

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.

See The Results – Not The Insert

You’ll notice the impact your Indow inserts make right away, but you might forget they’re there soon after. We’ve engineered our inserts to be inconspicuous and blend in with your existing windows. Each insert is customizable with your choice of tubing color to match your frame.

A Smart Investment

Indow inserts can cost as much as 60% less per square foot compared to a full window replacement, while providing substantial savings on energy bills and unparalleled performance compared to bargain solutions.

Lifetime Warranty & Snug Fit Guarantee

Our on-staff Comfort Experts work with you to make sure inserts will solve your window issues, fit snugly, and be a valuable improvement to your home. That’s why all of our inserts are backed by a Lifetime Warranty, Snug Fit Guarantee, and why we love reading the thousands of rave reviews we receive!

Customer Reviews

Excellent

4.49 Average 1479 Reviews

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Anonymous

Don't be afraid of buying an older home with single pane windows. This company has you covered. Their inserts are super high quality and fit well thanks to the laser measuring kit they send. Highly recommended!

Posted 5 hours ago

Katie M

We purchased three Indows to reduce drafts and noise in our bedroom, which faces the street. The improvement was immediate. Our house was built in 1958 and although we have exterior storm windows we didn't want to replace the windows outright due to cost and architectural consistency. These were an excellent solution.

Posted 1 day ago

Matthew L

Indow inserts were easy to measure, order and install. They've provided great insulation for old single-pane and stained glass windows in an antique home. We can significantly feel how much better the home holds heat.

Posted 4 days ago

Ellis W

I ordered two Indow inserts for my home. They are doing a great job, entirely happy with them and the ordering process.

Posted 2 weeks ago

Elizabeth W

I can't say enough good things about this product and company. Our house is 101 years old and the sidelites next to our front door are single pane ancient wavy glass which means when it gets very cold (Chicago temps) we can have an inch of frost covering the INSIDE of our windows. I was desperately searching for a solution so our front vestibule was not so cold and a friend recommended Indow. The process could not have been simpler and the temperature difference it has made is off the charts.

Posted 2 weeks ago

Austin T

I have several historic single pane gridwork mullion windows. They're beautiful but have almost no thermal protection. Indows proved to be the perfect solution to preserve these windows while getting the thermal comfort we need. They were easy to install and work perfectly!

Posted 4 weeks ago

Kathryn M

Amazingly easy to install even the safety chain holders. I. Noticed an immediate sound level difference and the room atmosphere became more solid feeling and pleasant. They also gave an insulating feature to the window drafts are non existent! The house is 50ft off a State highway that is heavily traveled in warmer months I'm confident the indows will handle it. I'm very pleased!

Posted 1 month ago

Anonymous

We ordered the acoustic inserts to help with road noise, and we've been sleeping so much better with them!

Posted 1 month ago

Sienna K

We used the windows inserts in our skylight. They are great! They the horrible drafts and noise out and were cost efficient. My only comment would be to provide better measurement and installation instructions for skylights specifically. It took us a lot of guessing and research to measure and install because skylight directions were not provided and the windows install guide doesn't always apply to skylights. Other than that though great product and I would buy again!

Posted 1 month ago

ted t

Our home was built in the late 1800s and we have spent a lot of money over the last 20+years restoring it.We did not want to replace the windows with modern windows because of the cost and originality. But the single pane windows come with a price also. the main reason we purchased the Indow window inserts is because of the condensation on the inside of the windows.We would literally have a take a towel and wipe them down every morning in the winter. There would be a puddle on the sill,and wood and water dont get along to well. SO we looked into the best solution to our problem and found Indow. Was reluctant to spend that much money but am super glad we did!! They have been installed now for over two months and our condensation problem has been virtually eliminated.!!! AND our furnace does not run as much as it did before. Over all it was money well spent!! The process was a little scary at first but they have a simple formula. And our contact person,Reed was awesome. Answered any questions i had and was always available.

Posted 1 month ago

Anonymous

Used to block interior side of a garden window in the the kitchen. Without insert, cold air literally poured into the kitchen making a winter jacket almost mandatory when preparing meals or washing dishes

Posted 1 month ago

Rob S

Highly recommend! The team (Brian) took time to help me figure out the best solution. They were made and delivered faster than expected. It was very rewarding to install them because I could feel the cold air get squeezed out as they went flush against the single pane of glass. Solid quality and great fit.

Posted 1 month ago

Alexa L

My inserts fit beautifully into my 125 year old windows - many of which were 5 feet tall. Easy to unwrap and install. Great product and even better service! I liked the process of measuring the windows with a laser measuring tool which was easy to use and precise. The product came in good condition after shipping across country and was well marked. The customer support was excellent.

Posted 1 month ago

Sarah D

Received our Indow Windows and can tell they are blocking a lot of the noise we could hear. Right now the weather is mild, but hoping to notice a big difference when the summer heats up. Our house is in a historic district and we cannot change our windows. They are very drafty and thin glass. We only ordered two, but we are in the process of ordering for four more. Love that we don’t need to drill holes or anything and they just pop right in.

Posted 2 months ago

Allan F

Every thing arrived in perfect condition, thanks to the very secure packaging. Windows fit as expected, although quite tight. After installation we noticed that the cold drafts were gone and the room felt a lot warmer. We are very satisfied with the product and the result.

Posted 2 months ago