Why Your Windows Are Sweating Indoors and How to Fix It

September 27, 2022

The windows throughout your home open up to the outdoors, a way to allow light in while you enjoy the view of your garden, yard or scenery. The last thing you want to see is a sweaty window plastered in a coating of condensation.

Not only are windows plastered with condensation unappealing, they also can be a sign of a larger air-quality deficit in your home. Thankfully, there’s numerous things you can do to resolve the problem.

What Causes Condensation along Windows

Condensation on the inside of windows is created by the humid warm air in your home mixing with the colder surface of your windows. It’s particularly prevalent in the winter when it’s much colder outside than it is within your home.

Inside Moisture vs. In Between Panes

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

  • Moisture within a window is caused from the warm damp air in your home forming on the glass.
  • Existing moisture you notice between windowpanes is formed when the window seal breaks down and moisture gets in between the two panes of glass, and by then the window should be repaired or replaced.
  • Condensation inside the windows isn’t a window issue and can instead be solved by changing the humidity inside your home. Numerous things cause humidity inside a home, such as showers, cooking, bathing or even breathing.

Why Condensation on Windows Can Be a Problem

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

How to Reduce Humidity Throughout Your Home

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

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

If you don’t have a humidifier running and your home’s humidity level is high, consider purchasing a dehumidifier. While humidifiers put moisture inside your home so the air doesn’t become too dry, a dehumidifier extracts excess moisture out of the air.

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

Whole-house dehumidifier systems are managed by a humidistat, which allows you to establish a humidity level the same as you would select a temperature via your thermostat. The unit will begin running automatically when the humidity level surpasses the set level. These systems work with your home’s HVAC system, so you will receive the best results if you contact experienced professionals for whole-house dehumidifier installation Ellsworth.

Additional Ways to Reduce Condensation on Windows

  • Exhaust fans. Adding exhaust fans near humidity hotspots including the bathroom, laundry room or above the stove can help by extracting the warm, humid air from these areas out of your home before it can increase the humidity level in your home.
  • Ceiling fans. Turning on ceiling fans can also keep air swirling inside the home so humid air doesn’t get caught up in one area.
  • Open window treatments. Opening the blinds or drapes can decrease condensation by preventing the damp air from being caught against the windowpane.

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