Why Your Windows Are Sweating Indoors and How to Fix It

September 27, 2022

The windows in your home are a portal to the outdoors, a way to let light in when you appreciate the view of your garden, yard or scenery. The last thing you would want to see is a sweaty window covered in a film of condensation.

Not only are windows coated in condensation unappealing, they also can be a symptom of a more substantial air-quality problem throughout your home. Fortunately, there’s multiple things you can do to resolve the problem.

What Produces Condensation on Windows

Condensation on the inner layer of windows is produced by the moist warm air throughout your home reaching the cooler surface of the windows. It’s notably commonplace in the winter when it’s much colder outside than it is within your home.

Inside Moisture vs. In Between Panes

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

  • Moisture within a window is caused from the warm moist air in your home condensing against the glass.
  • Existing moisture you find between windowpanes is caused when the window seal breaks down and moisture slips between the two panes of glass, in which case the window should be repaired or replaced.
  • Condensation on the inside of the windows isn’t a window situation and can instead be fixed by adjusting the humidity inside your home. Many things produce humidity in a home, such as showers, cooking, laundry or even breathing.

Why Condensation on Windows Can Be an Issue

Even though you might consider condensation on the inside of your windows is a cosmetic problem, it may also be indicating your home has excess humidity. If this is in fact the case, water may also be accumulating on window frames, cold walls or other surfaces. Even a thin film of water can help wood surfaces to mildew or rot over time, fostering the growth of mildew or mold.

How to Decrease Humidity Inside Your Home

The good news is there are various options for extracting moisture from the air in your home.

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

If you don’t have a humidifier running and your home’s humidity level is excessive, look into purchasing a dehumidifier. While humidifiers introduce moisture into your home so the air doesn’t become too dry, a dehumidifier pulls excess moisture out of the air.

Small, portable dehumidifiers can remove the water from a single room. However, those units require clearing water trays and most often service a somewhat limited area. A whole-house dehumidifier will eliminate moisture across your entire home.

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

Additional Ways to Decrease Condensation on Windows

  • Exhaust fans. Putting in exhaust fans near humidity hotspots such as the bathroom, laundry room or above the oven can help by pulling the warm, humid air from these rooms out of your home before it can elevate the humidity level throughout your home.
  • Ceiling fans. Running ceiling fans can also keep air flowing throughout the home so humid air doesn’t get stuck in one spot.
  • Open window treatments. Opening the blinds or drapes can reduce condensation by stopping the humid air from being trapped against the windowpane.

By reducing humidity in your home and dispersing air throughout your home, you can make the most of clear, moisture-free windows even in the winter.