Insulating Drafty Windows for Comfort

Drafty windows make your home cold in winter as heat flows outside. In summer, they force your air conditioner to work extra hard — leading to high energy bills all year. Window replacement is one solution, but it can be expensive and disruptive. For homes built before 1978, it also carries the risk of lead paint contamination. At Indow, our insulated window inserts are custom-made to press into your existing windows for outstanding insulation to help block drafts in your home and save energy. 

 
closeup of window insert used to seal window drafts
 

Whether you’re trying to keep historic windows to preserve the value of your home or want to enhance the performance of newer windows, Indow inserts will regulate the temperature to make you comfortable year-round.

 
closeup of window insert used to seal window drafts
 
 

How to Seal Window Drafts Effectively

Our acrylic inserts are edged with a soft, patented silicone compression tube that presses into the interior of your window frames to seal drafts. You’ll feel warmer in winter and cooler in summer, while saving up to 20% on your energy bills.

Unlike other solutions for insulating windows, Indow inserts are custom-made using our proprietary laser-measuring system. Why does this matter? Since homes and buildings settle over time, most windows aren’t square. To seal window drafts effectively, we custom-make our inserts to be the exact shape of your window frames. Our laser measuring system ensures each insert fits every window just right.

 
 

Our patented compression tubing allows you to easily install or remove your inserts without damaging your existing windows with a mounting bracket or track system. The thermal acrylic increases the surface temperature of your existing windows, which raises the overall room temperature and lowers your energy bills. Another benefit? Due to the airtight seal, Indow inserts often reduce or eliminate window condensation.

 

Data Driven Results

 
 
 
Testimonials
 
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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.

 

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.

See All Grade Types

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.

 
 
Awards & Recognition
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bedroom with window with indow inserts installed for soundproofing in san francisco

 


 
 
 

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