Why Your Windows Are Sweating Indoors and How to Fix It

September 27, 2022

The windows of your home open up to the outdoors, a way to let light in when you enjoy the view of your garden, yard or landscape. The last thing you would want to see is a sweaty window plastered in a film of condensation.

Not only are windows plastered with condensation unsightly, they also can be a symptom of a more serious air-quality deficit inside your home. Thankfully, there’s numerous things you can do to address the problem.

What Causes Condensation along Windows

Condensation on the inner layer of windows is produced by the damp warm air inside your home reaching the colder surface of your windows. It’s particularly common during the winter when it’s much colder outside than it is in your home.

Inside Moisture vs. In Between Panes

When dealing with condensation, it’s crucial to understand 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 on the inside of a window is caused from the warm damp air throughout your home condensing along the glass.
  • Any moisture you find between windowpanes is caused when the window seal breaks down and moisture slips between the two panes of glass, and at that point the window should be repaired or replaced.
  • Condensation inside the windows isn’t a window issue and can instead be fixed by changing the humidity across your home. Many things produce humidity inside a home, like showers, cooking, bathing or even breathing.

Why Condensation on Windows Can Be a Problem

Though you might presume condensation in your windows is a cosmetic issue, it could also be evidence your home has high humidity. If this is the case, water might also be collecting on window frames, cold walls or other surfaces. Even a small film of water can help wood surfaces to mildew or rot over time, promoting the growth of mildew or mold.

How to Reduce Humidity Throughout Your Home

Not to worry, because there are various options for eliminating moisture from the air inside your home.

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

If you don’t have a humidifier active and your home’s humidity level is high, look into installing a dehumidifier. While humidifiers put moisture into your home so the air doesn’t dry out, a dehumidifier extracts excess moisture out of the air.

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

Whole-house dehumidifier systems are controlled by a humidistat, which permits you to set a humidity level precisely as you would choose a temperature on your thermostat. The unit will begin running immediately when the humidity level surpasses the set level. These systems work with your home’s HVAC system, so you will want to contact skilled professionals for whole-house dehumidifier installation Huntingburg.

Additional Ways to Reduce Condensation on Windows

  • Exhaust fans. Adding exhaust fans in humidity hotspots such as the bathroom, laundry room or above the oven can help by extracting the warm, moist air from these areas out of your home before it can raise the humidity level throughout your home.
  • Ceiling fans. Running ceiling fans can also keep air moving throughout the home so humid air doesn’t get stuck in one place.
  • Opening up window treatments. Opening the blinds or drapes can decrease condensation by stopping the damp air from being trapped against the windowpane.

By lowering humidity in your home and dispersing air throughout your home, you can take advantage of clear, moisture-free windows even during the winter.