Foggy windows can be more than aggravating. They can allow condensation into your home, which can lead to mold, mildew, and damage to your home. The good news is that you can actually prevent this issue. If your windows are fogging up then you should assume that there’s too much humidity in your home.
According to the American Society of Home Inspectors, a family of four will release more than 2 ½ gallons of water each day just from showering, cooking, washing, watering plants, and even just breathing. If you reduce the humidity in your home, it’s likely you can reduce the fog.

Ways to reduce fog on your windows
There are many ways to reduce the fog on your windows. You may find that one of them works or you may have to do a combination of them to get results. Options including:
- Turning on exhaust fans in the kitchen and / or bathroom when you’re showering or cooking.
- Keeping your curtains open and making sure the ceiling fan is on to increase how much warm air is circulating around your windows.
- Open your windows when it’s warm so you can air out and dry out your home.
- During cold nights, keep your furnace set to the same temperature you keep it at during the night.
- Check the vent on your dryer to make sure it’s clear and that it vents outside your home.
- If you see a plumbing leak, take care of it right away.
- If you have a portable or whole-house humidifier, turn it off.
- Run a dehumidifier.
- Seal any exposed soil into your crawlspaces / basement with a vapor barrier.
- Install a whole-house heat recovery ventilator. It will exhaust your stale, moist air outside and replace it with air that’s clean and pre-heated from outside.
- Replacing older windows with new windows.
- Use your storm windows when necessary.
These are just some of the ways you can reduce the fog on your windows. Try one or more until you find something that works for you.
If the problem is your windows then we have the solution
Condensation can be a sign that your windows aren’t sealed correctly or that they’re not offering enough protection from the outside world. If this is the case, then installing new windows is likely the answer. Contact Charles Window to find out what your options are to solve this potentially dangerous problem.