Why Your Windows Are Sweating Indoors and How to Fix It

September 27, 2022

The windows in your home are a gateway to the outdoors, a way to draw light in as you appreciate the view of your garden, yard or other surroundings. The last thing you need to see is a sweaty window plastered in a film of condensation.

Not only are windows plastered with condensation unappealing, they also can be a symptom of a more substantial air-quality problem in your home. Thankfully, there’s numerous things you can try to address the problem.

What Creates Condensation in Windows

Condensation on the interior of windows is produced by the humid warm air inside your home reaching the cooler surface of your windows. It’s particularly commonplace during the winter when it’s much cooler outside than it is inside your home.

Inside Moisture vs. In Between Panes

When talking about condensation, it’s crucial to know the distinction 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 moist air inside your home forming along the glass.
  • Any moisture you notice between windowpanes is produced when the window seal fails and moisture seeps between the two panes of glass, in which case the window has to be repaired or replaced.
  • Condensation in the windows isn’t a window problem and can instead be resolved by adjusting the humidity inside your home. Numerous things produce humidity inside a home, such as showers, cooking, laundry or even breathing.

Why Condensation on Windows Can Be an Issue

Even though you might presume condensation on the inside of your windows is a cosmetic issue, it may also be indicating your home has excess humidity. If this is the case, water could also be accumulating on window frames, cold walls or other surfaces. Even a slim film of water can encourage wood surfaces to mildew or rot over time, increasing the growth of mildew or mold.

How to Decrease Humidity Inside Your Home

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

If you have a humidifier active in 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 active and your home’s humidity level is higher than you prefer, think about installing a dehumidifier. While humidifiers put moisture in your home so the air doesn’t get too dry, a dehumidifier pulls excess moisture out of the air.

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

Whole-house dehumidifier systems are managed by a humidistat, which allows you to specify a humidity level the same as you would select a temperature via your thermostat. The unit will run immediately when the humidity level overtakes the set level. These systems coordinate with your home’s HVAC system, so you will receive the best results if you contact qualified professionals for whole-house dehumidifier installation Kingsville.

Additional Ways to Reduce Condensation on Windows

  • Exhaust fans. Putting in exhaust fans near humidity hotspots such as the bathroom, laundry room or above the kitchen range can help by drawing the warm, moist air from these rooms out of your home before it can elevate the humidity level inside your home.
  • Ceiling fans. Spinning ceiling fans can also keep air circulating inside 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 preventing the warm air from being stuck against the windowpane.

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