Why Your Windows Are Sweating Indoors and How to Fix It

September 27, 2022

The windows of your home are a gateway to the outdoors, a way to allow light in while you enjoy 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 evidence of a more serious air-quality problem within your home. Thankfully, there’s several things you can try to resolve the problem.

What Produces Condensation on Windows

Condensation on the inside of windows is formed by the humid warm air inside your home mixing with the colder surface of the windows. It’s notably common around 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 crucial to understand the difference between moisture on the inside of your windows in comparison to moisture in between the windowpanes. One is an air-quality issue and the other is a window issue.

  • Moisture inside a window is created from the warm damp air in your home condensing against the glass.
  • Existing moisture you see between windowpanes is formed when the window seal fails and moisture seeps between the two panes of glass, and at that point the window needs to be repaired or replaced.
  • Condensation in the windows isn’t a window issue and can instead be resolved by adjusting the humidity across your home. Numerous things produce humidity inside a home, such as showers, cooking, taking a bath or even breathing.

Why Condensation on Windows Can Be an Issue

Though you might consider condensation on the inside of your windows is a cosmetic problem, it can be indicating your home has high humidity. If this is the case, water may also be condensing on window frames, cold walls or other surfaces. Even a small film of water can encourage wood surfaces to mildew or rot over time, promoting the growth of mildew or mold.

How to Lower Humidity Throughout Your Home

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

If you have a humidifier operating in 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, consider installing a dehumidifier. While humidifiers put moisture inside your home so the air doesn’t dry out, a dehumidifier pulls excess moisture out of the air.

Small, 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 throughout your entire home.

Whole-house dehumidifier systems are managed by a humidistat, which permits you to establish a humidity level just as you would choose a temperature with your thermostat. The unit will begin running immediately when the humidity level surpasses the set level. These systems coordinate with your home’s HVAC system, so you will receive the best results if you contact experienced professionals for whole-house dehumidifier installation Booneville.

Alternative Ways to Eliminate Condensation on Windows

  • Exhaust fans. Adding exhaust fans in humidity hotspots like the bathroom, laundry room or above the stove can help by drawing the warm, humid air from these spaces out of your home before it can elevate the humidity level across your home.
  • Ceiling fans. Turning on ceiling fans can also keep air circulating within the home so humid air doesn’t get caught up in one spot.
  • Opening your window treatments. Throwing open the blinds or drapes can decrease condensation by preventing the humid air from being caught against the windowpane.

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