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How to Minimize Condensation on Windows

Foggy windows are nothing new to homeowners. Some can get really frustrated by it while others are able to tolerate this nuisance.

How to Minimize Condensation on Windows

In this article, trusted window company, Renewal by Andersen® of Southwest Missouri, discusses how condensation occurs on windows and what you can do to avoid it.

What You Need to Know About Condensation

Condensation is the result when warm, moist air comes into contact with cooler surfaces like your window glass. It’s more common in winter, but it can also happen during a warmer season or whenever water vapor from warm air touches a colder surface. A good example of this is when a glass of cold water sweats. Since the air is warm and moist, and the glass surface is cold, condensation occurs.

Indoor moisture is mostly caused by the activities you do inside your home. It results from cooking, showers or any activity that makes use of water. Vapor pressure usually forces moisture through materials like plaster, wood, brick and cement.

With regards to moisture outside your window, this often happens in spring and fall. During these seasons, the days are usually warmer and the nights cooler.

But before assuming that your windows are bad, take note that condensation isn’t entirely a bad thing. On the contrary, experts see it as an indicator that your windows are tightly sealed and energy-efficient.

Reducing Humidity in Your Home

Although it can be hard to completely stop your windows from fogging up, there are ways in which you can minimize humidity in your home. Professionals recommend homeowners to do the following:

  1. Ventilate the attic and crawl space.

  2. Cover the earth in the crawl space with a vapor barrier.

  3. Vent appliances and exhaust fans outside.

  4. Run an exhaust fan in the kitchen when cooking and in the bath until the mirror is clear.

  5. If you have a forced air furnace, ensure your home is properly ventilated.

Renewal by Andersen of Southwest Missouri offers window replacement services. We can ensure quality workmanship and excellent customer service. Call us at (417) 351-2801, or fill out our contact form to request a free estimate.


"Quality product, quality workmanship. Everyone I interacted with at Renewal by Andersen of SW Missouri had pride in their work from sales to financing to project oversight to installation. It must be a great company to work for because that shows in the professionalism of the staff. Best of all, they want happy customers and go out of their way to make sure that happens. Yes, I love my windows (but I knew I would--it's a great product). Friendly, helpful, easy financing, and yes--they pass costs on to the customer for this, but it meant that I was able to get the windows I wanted and needed for my creaky, lopsided old house. Couldn't be more pleased."

Aug 11, 2023

"The company representative who met with me initially was very direct, told me how the process would go, explained about why Anderson windows are of such good quality and how they stand by their products and their workmanship. My 3 windows arrived when they said they would, & the men who installed them were very professional, polite, & efficient. They showed me how the windows work and left the room as tidy as it was before they did the installation."

Judith Peavey
Aug 14, 2023

"We just had our windows done by Renewal. They kept us informed about the progress of manafucture & installed at the approximate date. Good qualtity & if you didn't know that there were screens on the windows you would think they were missing. Very clear view. Great in this hot weather, the house stays cool."

Jerry C
Aug 22, 2023

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