Why Your Windows Are Sweating Indoors and How to Fix It

September 27, 2022

The windows throughout your home are a portal to the outdoors, a way to allow light in when you enjoy the view of your garden, yard or other surroundings. The last thing you need to see is a sweaty window covered in a film of condensation.

Not only are windows covered in condensation unsightly, they also can be a sign of a more serious air-quality deficit throughout your home. Thankfully, there’s numerous things you can try to address the problem.

What Creates Condensation on Windows

Condensation on the interior of windows is produced by the humid warm air throughout your home hitting the colder surface of your windows. It’s especially commonplace in the winter when it’s much cooler outside than it is inside your home.

Inside Moisture vs. In Between Panes

When discussing condensation, it’s crucial to know the contrast between moisture on the inside of your windows in comparison to moisture in between the windowpanes. One is an indoor air quality issue and the other is a window issue.

  • Moisture inside a window is produced from the warm humid air throughout your home collecting against the glass.
  • Any moisture you find between windowpanes is produced when the window seal breaks down and moisture gets in between the two panes of glass, and at that point the window needs to be repaired or replaced.
  • Condensation in the windows isn’t a window situation and can instead be resolved by fine-tuning the humidity in your home. Numerous things generate humidity in a home, including showers, cooking, taking a bath or even breathing.

Why Condensation on Windows Can Be Trouble

Even though you might think condensation inside your windows is a cosmetic concern, it could also be evidence your home has excess humidity. If this is the case, water may also be collecting on window frames, cold walls or other surfaces. Even a small film of water can cause wood surfaces to mildew or rot over time, increasing the growth of mildew or mold.

How to Lower Humidity in Your Home

Fortunately there are numerous options for removing moisture from the air throughout your home.

If you have a humidifier operating inside your home – whether it be a small-scale unit or a whole-house humidifier – lower it further so the humidity inside your home decreases.

If you don’t have a humidifier going and your home’s humidity level is excessive, think about purchasing a dehumidifier. While humidifiers introduce moisture into your home so the air doesn’t get too dry, a dehumidifier draws excess moisture out of the air.

Smaller, portable dehumidifiers can absorb the water from a single room. However, these units require emptying water trays and most often service a fairly small area. A whole-house dehumidifier will extract moisture from your entire home.

Whole-house dehumidifier systems are regulated by a humidistat, which permits you to specify a humidity level the same as you would select a temperature with your thermostat. The unit will start automatically when the humidity level surpasses the set level. These systems coordinate with your home’s HVAC system, so you will receive the best results if you contact skilled professionals for whole-house dehumidifier installation Monroe.

Additional Ways to Lower Condensation on Windows

  • Exhaust fans. Installing exhaust fans around humidity hotspots including the bathroom, laundry room or above the oven can help by pulling the warm, humid air from these spaces out of your home before it can raise the humidity level across your home.
  • Ceiling fans. Turning on ceiling fans can also keep air circulating within the home so humid air doesn’t get trapped in one area.
  • Opening up window treatments. Opening the blinds or drapes can reduce condensation by stopping the humid air from being stuck against the windowpane.

By reducing humidity inside your home and moving air throughout your home, you can enjoy clear, moisture-free windows even in the middle of the winter.