what causes condensation on bedroom windows?

Answer 1

Excessive humidity and lack of air flow. When it's cold outside, it causes your window to also be cold. If the air in your room is stagnant and full of moisture, that moisture will condensate onto your window. How do you correct this? You want to keep humidity in the air in the winter for comfort and to prevent dry skin so the main objective is to get the air moving. If you have forced air heat, make sure nothing is blocking the vents. Check your humidifier settings. You want humidity but you don't it running all the time either. If you have hot water radiation or baseboard electric heat, get an air exchanger. They do run a bit of money but if you have wood windows and that condensation keeps up, your windows will rot and replacing all of your windows would cost a lot more than having an air exchanger put in. Air exchangers also improve the air quality and breathability in your house and helps to prevent mould. It's a good investment.

Answer 2

Condensation is caused by inadequate heating and lack of ventilation. If you don't do something about both of those then you will continue to have condensation. When I open my Lounge curtains every morning in cold weather there is a tiny bit of moisture on the bottom of the window which is normal because the curtains are closed. If they are left open this doesn't happen because my windows have air vents in them.

Answer 3

When it is much colder outside than it is inside, the cold outdoor temperature will make the glass window colder. Then, when the warm indoor air molecules get near the window, the cold emanating from the glass will cause the air molecules to get colder and slow down. When gas molecules slow down, they condense into their liquid form; in this case, air will condense to water. This is why condensation (drops of water) form on windows.

You can see the same effect on drinks with ice in them. If you cover the top of the glass with saran wrap (so you know that no water can possibly get out), you will still see water droplets form on the outside of the glass.

Answer 4

Warm air can hold more moisture than cold air. When the warm air inside your house (which contains moisture) hits the cold windows, it cools rapidly, and gives up some of the moisture it can no longer hold -- resulting in condensation on your windows.

Getting double-pane windows will pretty much cure this. The double-panes have an insulating layer of air or gas between the two panes, so the inside pane isn't nearly as cold as the outside air, and the warm air inside won't give up moisture when it hits it.

:)

Answer 5

Let's put it this way. Molecules of the water attract each other and stay stick to each other at temperature around 20 oC. However, the heat (that is the energy measured by temperature) forces these molecules to move (stochastically) by hitting each other. In fact the heat transfers from the hotter molecules that hit into the colder molecules which accept the impulse and become hotter. Getting back to the water, the molecules of the hot air hit the molecules of the water (at the surface) and move them apart from each other so they become the part of the air. The water in such a state is called moisture. If such moisturized air start cooling the water molecules in the vicinity of each other stick by molecular forces to each other and the insufficient heat (kinetic energy of air molecules) is not enough to break them apart. More molecules stuck together make a drop and that is the way how we get the rain. Hot moisture air (from the Ocean) lifts up and cools down where the moisture transforms into the water drops.
Now the answer to your question comes from the same concept. Hot air with the moisture comes close to the cold window glass.The water molecules in the air that come into the vicinity of each other stick to each other making drops. And since they are close to the glass window they stick to the glass. That's how you get the watery glass window.
This theory is called Statistical Theory of Heat and is based on the mechanical movement of molecules vs. molecular forces that keep molecules together to make the matter. With enough kinetic energy you can break any molecular forces. This causes the matter to go from solid to liquid and finaly to the gas state.

Answer 6

The difference in temperature of the air and the glass. Warm air can hold more water (as water vapour) than cold air. When warm air comes into contact with the cooler glass window, the air cools and cannot hold as much water. The extra water is deposited as liquid on the cold surface as condensation,

Answer 7

High humidity in the room and cold outside temperatures.

The glass in the window is the coldest thing in the room, so the water condenses on the glass.

Answer 8

Because the glass is cold. Water from a glass or something is heated up and evaporated into the air or it could even be moister from your body. So now you have water vapour in the air then when that water vapour comes into contact with the cold glass it is condensed back into its liquid form.

Answer 9

Cold air outside the window, moisture and water vapour (such as from breathing, showering etc) on the inside of the window

Answer 10

your breath and a wamer room and much colder temperatures outside. The condensation forms on the inside as the warm moist hair hits the colder glass.