When people talk about surviving Minnesota winters, they mostly talk about the cold. But there’s another factor that makes winter life harder, and more expensive, that doesn’t get nearly enough attention: indoor humidity.
In the Brainerd Lakes Area, we button our homes up tight from October through April. We run our furnaces constantly. The result is indoor air that becomes extremely dry, often far drier than outdoor desert air. And that dryness has real consequences for your health, your home, and even your heating costs.
What’s the Right Indoor Humidity Level in Winter?
The ideal indoor relative humidity in winter is between 30% and 50%. Most Minnesota homes, without any intervention, run well below this, often dropping to 15–25% during deep cold snaps. You can measure your home’s humidity with a hygrometer (an inexpensive tool available at any hardware store).
Why Low Humidity Makes You Feel Colder
Here’s a counterintuitive fact: dry air actually makes you feel colder at the same temperature. Humidity affects how your body’s evaporative cooling works, when the air is very dry, moisture evaporates from your skin faster, pulling heat away from your body. This is great in summer. In winter, it means you feel colder than the thermostat says.
The practical implication: homes with proper humidity can often set their thermostat 2–3°F lower and feel the same level of comfort. Over a full Minnesota heating season, that’s meaningful energy savings.
Health Effects of Dry Winter Air
Low indoor humidity affects your health in several concrete ways:
Respiratory irritation: Dry air dries out the mucous membranes in your nose and throat, which are your body’s first line of defense against viruses and bacteria. When they dry out, they become less effective. This is one reason respiratory illnesses spread so readily in winter.
Skin issues: Dry, itchy skin and cracked lips are the most obvious signs of low indoor humidity. Eczema sufferers often see significant worsening during dry winter months.
Static electricity: That shock you get touching a doorknob? That’s low humidity. Not a health issue, but definitely annoying, and bad for electronics.
Sleep disruption: Sleeping in dry air causes nasal congestion, snoring, and throat irritation that disrupts sleep quality.
Eye irritation: Contact lens wearers in particular notice dry, uncomfortable eyes during winter in low-humidity homes.
What Low Humidity Does to Your Home
It’s not just you, your house doesn’t like dry air either:
- Hardwood floors and furniture shrink and crack in very dry conditions. Gaps between floorboards, squeaking, and cracking furniture are classic signs of low humidity.
- Musical instruments are very sensitive, pianos can go out of tune, and wooden instruments can crack.
- Doors and trim can shrink, warp, and develop gaps.
- Wallpaper can peel at edges and seams.
These are slow, cumulative effects, but over years of very dry winters, they add up.
Solutions: What You Can Do
1. Whole-Home Humidifier (Best Option)
A whole-home humidifier installed on your furnace is the most effective and lowest-maintenance solution. It adds moisture to the air as it circulates through your heating system, maintaining consistent humidity throughout your home automatically.
There are several types:
- Bypass humidifiers: The most common, affordable option. Water passes over a panel or pad and moisture evaporates into the airstream.
- Fan-powered humidifiers: More efficient than bypass models; work independently of the furnace airflow.
- Steam humidifiers: The most effective option, especially for tighter, well-insulated homes. Heat water to create steam directly.
Whole-home humidifiers require annual maintenance (pad/filter changes) but are otherwise set-and-forget.
2. Portable Humidifiers
Portable humidifiers work well for individual rooms or smaller spaces. They require more frequent maintenance, daily filling and weekly cleaning, but are a good solution for renters or as supplemental humidity control in specific rooms.
3. Houseplants
Not a primary solution, but plants do release some moisture through transpiration. In a very dry home, a collection of plants can contribute a few percentage points of humidity.
4. Leave Water Exposed
Leaving pots of water near heat sources or on radiators is an old technique that provides modest humidity. More useful in older homes with radiator heat than in modern forced-air homes.
The Bottom Line
Proper indoor humidity is one of the most overlooked parts of home comfort in Minnesota. If you’re waking up with dry throat and skin, getting shocked constantly, or watching your hardwood floors develop gaps, your home’s air is too dry.
A whole-home humidifier is one of the best investments you can make in your comfort and home preservation in this climate. Call Maverick’s Heating & Air at (218) 316-0550 and we can walk you through the options for your home.