Home windows turning to ice.

I'd say that's acceptable with below -10 temps outside. Ice should be on the outside of the glass, though, never inside the panel. 27% relative humidity is still enough for the windows to frost like that. Some of my windows look like that in the morning, especially in the basement where is colder indoors.

Looks about right. From the picture (Which is kinda blurry)

They look like old aluminum double sash single pane glass type windows and they're directly mounted to the wood opening. There's no insulation on these windows at all.

There was a recent thread about this. Please use search function.

tebore wrote: ↑ Looks about right. From the picture (Which is kinda blurry)

They look like old aluminum double sash single pane glass type windows and they're directly mounted to the wood opening. There's no insulation on these windows at all.

Yes these are 1986 windows, two rows of glass.

Other than replacing the windows, one solution would be to increase the air circulation across the windows. That will reduce the amount of ice on the glass. You could also reduce the humidity, but then you’re probably at the low end for comfort, now. Leave the blinds, if you have any, up. You could also put a fan in the room, aimed at the window. Least expensive cures, at this point.

Had this problem for a bit at home when temps were dropping into the -20 region. Humidity needs to be reduced, below levels of comfort.

If you don't want to deal with the condensation. Otherwise just wipe the windows down in the morning and at night.

azn_dan wrote: ↑ Had this problem for a bit at home when temps were dropping into the -20 region. Humidity needs to be reduced, below levels of comfort.

If you don't want to deal with the condensation. Otherwise just wipe the windows down in the morning and at night.

I further reduced the humidity to 22% and bumped up the heat to 23 degrees. Left the doors in every room opened and the ice started to defrost. Most likely wiping it down every morning and night is better than waking up to dry nose and throat.

cristianosham wrote: ↑ I further reduced the humidity to 22% and bumped up the heat to 23 degrees. Left the doors in every room opened and the ice started to defrost. Most likely wiping it down every morning and night is better than waking up to dry nose and throat.

yea that's the trade off sadly. Unless you have a more efficient window, i just let my ecobee control the humiditiy with its "frost control"