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Cross-section of double-pane window frame with tools for removing fog between panes, Advanced Window Products logo.

How to Remove Fog Between Double Pane Windows

3 minute read


Occasionally, homeowners with double- or triple-pane windows notice fog forming between the panes that’s impossible to wipe away. If you’re searching for how to clean inside double-pane windows, the truth is you can’t. Once fog appears, the seal has failed, and the only real solution is replacement. Here’s why. 

The Truth About Foggy Double-Pane Windows 

Double- and triple-pane windows are sealed units filled with insulating gas. That gas prevents heat transfer and helps with efficiency. If fog forms, it means the seal has broken and moisture has entered. This can happen due to impact damage, natural wear, or aging seals. Unfortunately, because the condensation is trapped inside, it can’t be cleaned away. 

Why DIY Fixes Don’t Work 

Online, you’ll see plenty of supposed DIY solutions, drilling holes, injecting gas, or applying sealant. While they may look like they work briefly, these fixes don’t last. The fog always returns because the seal is permanently compromised. 

DIY attempts can also make the problem worse. They may weaken the window structure, reduce insulation value, and even void any warranty you still have. What starts as a small problem often turns into wasted time, money, and reduced energy efficiency. 

The Real Fix: Insulated Glass Unit Replacement 

Double- and triple-pane windows are also called insulated glass units (IGUs). They rely in argon gas to provide insulation. When the seal fails, the gas leaks out, and the window loses its insulating properties. 

Currently, there’s no technology to restore a failed seal. Replacement of the IGU or the entire window is the only reliable solution. Professional replacement ensures your new window is properly sealed, giving you clear views and restored efficiency. You may even notice your energy bills improving after replacement, since a failing window often loses effectiveness gradually. 

Benefits of Professional Replacement 

Professional installation comes with several advantages: 

  • Proper installation: Ensures your new windows are sealed and insulated correctly.
  • Warranty protection: Many new windows include warranties, giving you peace of mind.
  • Energy efficiency: A correctly installed IGU restores your home’s insulation.
  • Curb appeal: New windows can improve your home’s appearance and may even add value.

With professional service, you won’t have to deal with recurring fog or ineffective fixes. Instead, you’ll gain lasting clarity and comfort. 

Ready for Clearer Views and Better Efficiency? 

DIY fixes for foggy double-pane windows may sound appealing, but they simply don’t work. Replacement by a trusted professional is the only way to restore clarity and energy performance. 

Don’t waste time on temporary solutions.Contact us at Advanced Window Products for a free consultation and professional assessment. Let us help you enjoy clear views, better efficiency, and peace of mind with windows that last.

Reviews

Shane Anderson AvatarShane Anderson
From the start of the process with Darren Lewis to the install with Brock Rezac this company was first class all the way around. We had 11 windows and a sliding door replaced and they had the job done in about 5 hours, we weren’t waiting around all day like most do for the “we will be there between 8-10 am” schedule. Brock was knocking on our door at 7:50am, and he and his partner did not take a break until the job was done. We could not be happier with our new windows as they have given our house a little face lift, made the inside quieter from outside noise, and just in the few days they have been in we have been able to tell a huge difference in how much our AC runs. Thank you for a job well done start to finish Advanced Windows Utah - 8/10/2026 
Brian Rothschild AvatarBrian Rothschild
Advanced Window Products gave us a fair price and worked with us to find the exact product and price point for our needs. So far, I am happy with the product and installation. The installation crew was fast, courteous, and clean. - 8/08/2026 
Douglas Hutchinson AvatarDouglas Hutchinson
Had my windows done with these guys. They look amazing. We absolutely loved how fast and easy the process was. - 8/07/2026 
Sherri McMillan AvatarSherri McMillan
We recently had our French doors replaced with sliding glass doors from advanced windows! What a joy it was to work with them and to have beautiful new window windows/door! Everyone was so kind, professional, and so great to work with! They showed up on time and were very thorough in their work and the cleanup was incredible as well! I would highly recommend advanced windows to anyone wanting to replace their existing door/windows or upgrade! They were the best and I absolutely love my new sliding glass door! - 8/06/2026 
Sam Richins AvatarSam Richins
Best communication, service amd quality. I wish we would have done this 10 years ago - 8/06/2026 
Alison Bishop AvatarAlison Bishop
Advanced Windows came and did our windows and they are SO much better than what we had previously. Everyone was very professional (from sales to measuring to installation) and were clear with what to expect and the timeframe. The windows have looked and felt great, and we have enjoyed the slight tint and its effect in helping keep the heat out. Installation was quick, about 11-3:30 for 9 windows. (Lunch break included). They were very aware of the before and after looks of our house. They cleaned up after themselves, and did a great job. There were a few dings, dents and holes that were left after they did, but a very small amount of plaster and paint and it will be right as rain.Highly recommend they were awesome! - 8/06/2026 
Joey Tolboe AvatarJoey Tolboe
Great team to work with from their sales to scheduling to install. Professional and friendly at every turn. The install went great and the windows look amazing. - 8/06/2026 
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