Foggy, icy or dripping windows are a common sight in Alberta winters, especially during extreme cold snaps. While it might seem harmless, window condensation can lead to bigger problems if you don’t address it.
Find out what causes it, why it matters, and how you can keep your windows—and home—safe this winter.
What causes window condensation in winter?
When the temperature drops, your home’s heating system kicks into high gear to keep you warm. That warm air inside holds more moisture than the chilly air outside. Everyday activities like cooking, showering, or even breathing add to the humidity.
When this warm, moist air hits the cold surface of your windows, the moisture condenses into water droplets—or worse, frost. This happens most often on single-pane or older windows because they aren’t as well-insulated.
Why should you care about condensation?
Condensation isn’t just a nuisance; it can damage your home over time. Here’s how:
- Mold and mildew: Excess moisture creates the perfect breeding ground for mold and mildew, which can trigger allergies or asthma.
- Damaged windows and walls: Water pooling on windowsills can weaken seals, warp frames, and damage drywall.
- Higher energy bills: If your windows are damaged, they may let cold air in and warm air out, forcing your furnace to work harder.
How to prevent moisture on windows
Taking simple steps to reduce moisture on windows can save you a lot of trouble. Here are some ways to get started.
1. Check your windows regularly
Inspect your windows for signs of trouble, especially during cold snaps. Look for:
- Water pooling on sills
- Frost or fogging
- Mold or mildew around the frame
If you find moisture, wipe it away right away. Use a household cleaner to stop mold from spreading.
2. Open blinds to let warm air circulate
Closed blinds or curtains trap cold air against your windows. Open them a few inches during the day to let warm air flow over the glass. If you notice frost, place a towel on the sill to catch any melting water and protect your windowsill.
3. Adjust your humidifier
If your furnace has a built-in humidifier, turn it down to 10% or off completely during extremely cold weather. Alberta’s dry air naturally keeps indoor humidity around 20% just from activities like cooking and showering.
Pro tip: If you don’t have a humidifier and struggle with dry air, Rümi can help you install one that adds just the right amount of moisture to your home.
4. Run a dehumidifier in problem areas
Rooms like basements, attics, or bathrooms often have more moisture. Use a dehumidifier in these spaces, especially during Chinook melts, spring thaws, or extreme cold.
Bonus: Dehumidifiers also produce heat, which can warm up chilly spaces like basements while preventing moisture damage.
When should you replace your windows?
If you see condensation between the window panes or notice cracked or worn seals, consider replacing them. Designers make modern windows to better handle Alberta’s harsh winters. These windows keep your home warm and lower your energy bills.
Rümi offers durable, energy-efficient windows that are built for Canada’s climate. If your old windows are causing issues, we can help you upgrade.
Check out Rümi's Guide to Window Replacement in Alberta.
How to deal with mold or moisture damage
Mold in the home is a health hazard and especially dangerous for individuals with allergies, asthma or mold sensitivity. And the musty smell and stains left behind don’t exactly give a luxurious “welcome home” feeling.
Need a mold check-up? Book Mold Inspection & Air Quality Testing.
Extra tips to reduce condensation
- Use kitchen and bathroom fans: Always run exhaust fans while cooking or showering to remove excess moisture.
- Seal leaks: Check for drafts around windows and doors. Adding weatherstripping or caulking can keep warm air in and cold air out.
- Keep furniture away from windows: Ensure furniture or heavy curtains aren’t blocking airflow to your windows.
Don’t let condensation ruin your winter
Steamy windows are common, but they don’t have to be a problem. By reducing moisture and checking your windows regularly, you can avoid damage and keep your home comfortable.
Call in a pro
If you need help with window upgrades, mold remediation, or humidity control, Rümi’s experts are here to help. We'll help you with a setup that keeps you warm, cozy and condensation-free all winter long.
Ready to take control of your winter window woes? Contact Rümi today for expert solutions.
