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 allow light in while you enjoy the view of your garden, yard or scenery. The last thing you need to see is a sweaty window coated in a film of condensation.

Not only are windows coated in condensation unattractive, they also can be a sign of a larger air-quality deficit throughout your home. Thankfully, there’s numerous things you can try to correct the problem.

What Creates Condensation on Windows

Condensation on the inside of windows is formed by the damp warm air throughout your home reaching the cold surface of the windows. It’s especially common in the winter when it’s much cooler outside than it is within your home.

Inside Moisture vs. In Between Panes

When discussing condensation, it’s necessary to know the difference between moisture on the inside of your windows versus 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 throughout your home collecting on the glass.
  • The moisture you find between windowpanes is caused when the window seal stops working and moisture gets in between the two panes of glass, and at that point the window has to be repaired or replaced.
  • Condensation in the windows isn’t a window issue and can instead be fixed by adjusting the humidity in your home. Many things produce humidity inside a home, including showers, cooking, bathing or even breathing.

Why Condensation on Windows Can Be Trouble

Though you might presume condensation in your windows is a cosmetic issue, it may also be a sign your home has excess humidity. If this is the case, water might also be accumulating 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 Inside Your Home

Thankfully there are various options for extracting moisture from the air in your home.

If you have a humidifier running inside your home – whether it be a small 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 higher than you prefer, think about purchasing a dehumidifier. While humidifiers introduce moisture into your home so the air doesn’t dry out, a dehumidifier pulls excess moisture out of the air.

Compact, portable dehumidifiers can eliminate the water from an entire room. However, portable units require clearing water trays and usually service a small area. A whole-house dehumidifier will remove moisture across your entire home.

Whole-house dehumidifier systems are controlled by a humidistat, which allows you to establish a humidity level precisely as you would choose a temperature via your thermostat. The unit will start instantly when the humidity level overtakes the set level. These systems work with your home’s HVAC system, so you will receive the best results if you contact skilled professionals for whole-house dehumidifier installation Wyandotte.

Alternative Ways to Reduce Condensation on Windows

  • Exhaust fans. Installing exhaust fans around humidity hotspots like the bathroom, laundry room or above the stove can help by pulling the warm, humid air from these rooms out of your home before it can increase the humidity level across your home.
  • Ceiling fans. Running ceiling fans can also keep air swirling inside the home so humid air doesn’t get stuck in one spot.
  • Open window treatments. Opening the blinds or drapes can decrease condensation by stopping the humid air from being stuck against the windowpane.

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