Winter Humidity and Window Frost in Winnipeg Homes
Winnipeg winters bring a constant balancing act: too dry and everyone's uncomfortable, too humid and windows frost over.
Request an HVAC technicianWhy the air is dry
Very cold outdoor air holds almost no moisture. Heated indoors, it becomes extremely dry.
Signs it's too dry
Static shocks, dry skin and eyes, irritated sinuses and cracking wood floors or furniture.
Signs it's too humid
Frost or water on the inside of windows, especially at the bottom corners, and damp spots on walls.
Adjust as it gets colder
Lower the humidifier setting as outdoor temperatures drop.
Ventilation
Run bathroom and kitchen fans, and keep an HRV balanced and clean.
Windows
Older windows frost more easily. Opening blinds lets warm air reach the glass.
Humidifier upkeep
Change pads and clean the humidifier regularly.
More help
See humidifiers and HRVs.
Basements
Basements can feel damp in summer and dry in winter. A dehumidifier in summer and a humidifier setting in winter keep things balanced.
Doors and skylights
Frost can also form on door frames, skylights and attic hatches where warm, humid air meets cold surfaces. Sealing air leaks helps.
A simple guide
Many homeowners keep indoor humidity lower as it gets colder, for example around 30 percent when it's −20°C and lower still in deeper cold. A hygrometer helps you see where you are.
Showers and cooking
Long showers, boiling pots and drying laundry indoors add a lot of moisture. Run fans and lids to keep it under control.
Mould risk
Persistent condensation on windows and walls can lead to mould on sills and in corners. Dry it up promptly and lower humidity.
New windows
Modern windows with warmer edges frost less. If old windows frost badly every winter, replacement may help.
More HVAC guides
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