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 take in the view of your garden, yard or scenery. The last thing you need to see is a sweaty window coated in a coating of condensation.

Not only are windows coated in condensation unattractive, they also can be evidence of a more substantial air-quality problem inside your home. Fortunately, there’s numerous things you can do to resolve the problem.

What Creates Condensation along Windows

Condensation on the inner layer of windows is produced by the moist warm air inside your home mixing with the cooler surface of your windows. It’s especially commonplace over 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 necessary to recognize the contrast between moisture on the inside of your windows versus moisture in between the windowpanes. One is an air-quality issue and the other is a window issue.

  • Moisture on the inside of a window is caused from the warm humid air throughout your home condensing on the glass.
  • Any moisture you see between windowpanes is caused when the window seal stops working and moisture gets in between the two panes of glass, in which case the window needs to be repaired or replaced.
  • Condensation inside the windows isn’t a window issue and can instead be solved by adjusting the humidity in your home. Different things cause humidity inside a home, including showers, cooking, bathing or even breathing.

Why Condensation on Windows Can Be a Problem

Even though you might presume condensation inside your windows is a cosmetic issue, it may also be evidence your home has higher humidity. If this is in fact the case, water could 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 Decrease Humidity Throughout Your Home

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

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

If you don’t have a humidifier going and your home’s humidity level is excessive, look into getting a dehumidifier. While humidifiers introduce moisture in 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 a single room. However, portable units require clearing water trays and most often service a fairly small area. A whole-house dehumidifier will extract moisture across your entire home.

Whole-house dehumidifier systems are regulated by a humidistat, which allows you to specify a humidity level the same as you would select a temperature with your thermostat. The unit will run instantly 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 Payson.

Other Ways to Lower Condensation on Windows

  • Exhaust fans. Installing exhaust fans around humidity hotspots like the bathroom, laundry room or above the kitchen range can help by drawing the warm, humid air from these spaces out of your home before it can increase the humidity level in your home.
  • Ceiling fans. Turning on ceiling fans can also keep air circulating within the home so humid air doesn’t get stuck in one place.
  • Opening your window treatments. Throwing open the blinds or drapes can reduce condensation by stopping the damp air from being trapped against the windowpane.

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