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
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.
Noise
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.
Light & UV
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.
All Products
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.
Featured In:

“Once you pop them in (no hardware required), you don’t even notice them. It’s the kind of ridiculously simple invention that you think must have been invented before.” -Popular Mechanics, These Ingenious Window Inserts Will Slash Your Heating Bill

Customize Your Insert
Choose which grade of custom window insert works for you. All grades block drafts and noise, but premium grades offer special features for specific situations. See all grade types.sdf
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. For a limited time we are offering a fourth color: Natural Wood! (Not available in Acoustic Grade)
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. Indow uses its patented silicone Compression Tube to keep window inserts in place instead of hardware like tracking. And depending on their size, you only need one person to put them in place.

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.
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