If your home feels drafty during a Minnesota or Wisconsin winter, your windows and patio doors may be contributing more than you realize. When temperatures drop below freezing, even minor inefficiencies become noticeable—often showing up as cold spots, rising heating bills, or rooms that never seem comfortable.
How Windows & Patio Doors Impact Winter Comfort
Older or underperforming windows and patio doors can allow heat transfer, drafts, and temperature imbalance throughout your home. Worn weatherstripping, outdated glass, and aging frames certainly play a role—but even properly sealed windows and patio doors might not be enough to keep a room comfortable.
While many homeowners assume these issues are caused by failing seals or air leaks, that’s not always the case. In fact, some of these comfort complaints may be caused by a natural physics phenomenon known as window convection.
What Is Window Convection?
Window convection occurs when warm indoor air comes into contact with a cold surface. Most noticeably glass, but this can also affect poorly insulated entry doors. As the warm air cools against the cold glass, it becomes denser and sinks toward the floor, pushing warmer air back toward the glass. This creates a continuous loop of circulating air near the window.
The important distinction:
This air isn’t leaking outside your home. Instead, the circulation creates drafts and uneven temperatures. While this effect can’t be eliminated entirely, the quality of your windows, patio doors and glass plays a major role in how noticeable it feels. With dated or low-quality product, the effect is more pronounced leaving your heating system working overtime to maintain comfort.
This is where window, door construction and glass performance make a measurable difference. Having window and patio door fixtures can help insulate the area, but majority of people don’t keep their shades closed, and to be honest, it’s good for your window and patio doors to get circulation to help prevent frost and condensation. Read more about this here!
Why Product Quality Matters More Than You Think
Not all windows and patio doors perform the same in cold climates. The amount of heat transfer—and how noticeable window convection feels—depends heavily on how the window and door is built.
Key performance factors include:
- Double-pane vs. triple-pane glass
- The insulating gas between panes (air, argon, or krypton)
- The type of Low-E (low-emissivity) glass coating
- The frame material and construction
- Sealing gaps around the window frames
High-quality, insulated glass slows heat transfer, reduces convection, and helps maintain consistent indoor temperatures—especially during extended cold weather common in the Upper Midwest.
Signs It May Be Time to Replace or Upgrade Your Windows or Patio Doors
When we meet with homeowners during winter, these are the most common issues we hear:
- Cold drafts near windows
- Pooling of cold air along the floor
- Severe frost or excessive condensation on glass
- Difficulty opening or closing windows or patio doors
- Rising heating bills
- Rooms that never reach a comfortable temperature
If a few of these sound familiar, your windows may be underperforming—even if they appear intact and are relatively new. Read our blog Homeowner Blues: Replacing Windows After 10 Years.
Energy-Efficient Window & Door Solutions for Minnesota & Wisconsin Winters
Modern windows and doors that are manufactured by highly reputable companies have the resources and engineers who focus on performance, especially for severe climates, keeping your home warm in the dead of winter and cool in summer. Andersen Windows & Doors has built a reputation for innovation and energy efficiency, earning the ENERGY STAR Partners of the Year — Sustained Excellence Award multiple times. Their products use advanced insulated frames, high-performance glass, and precision sealing to reduce heat transfer, minimize drafts, and maintain comfort year-round. By selecting the right glass, coatings, frame materials, and sealing systems, homeowners in Minnesota and Wisconsin can dramatically improve indoor comfort and lower heating costs, even during the harshest winters.
Double-Pane vs. Triple-Pane Glass
Double-pane windows and patio doors have been the industry standard since the 1970s and offer a significant improvement over outdated single-pane glass. Some manufacturers still offer single-pane options for homeowners on extremely tight budgets, but this is typically a short-term cost savings that leads to higher energy bills and reduced comfort.
Triple-pane glass may be worth considering, particularly along the North Shore or in northwestern Minnesota, where extreme cold and high winds are common. For most homeowners in the Twin Cities and western Wisconsin, double-pane windows with the right coatings provide excellent energy efficiency at a lower cost. Triple-pane glass adds an extra insulating layer, further reducing heat transfer and convection, making it an optimal option for homeowners where maximum energy performance is a priority.
Choosing the Right Glass Coating
Glass coatings are just as important as the number of panes. Andersen® offers several performance options designed for different climate needs, including:
- Low-E / Low-E4® Glass
- SmartSun™ Glass
- Sun Glass
- PassiveSun® Glass
- HeatLock® Technology
While glass designed for northern climates may seem like an obvious choice, some coatings can unintentionally reduce comfort during summer months if not selected properly. The goal is balance—year-round comfort, not just winter performance.
Our team works exclusively with Andersen® products and helps homeowners select the right glass for their home, exposure, and long-term comfort goals.
Why Winter Window and Patio Door Replacement Still Makes Sense
There’s a common misconception that window replacement must wait until spring. In reality, winter installations are both practical and effective.
Most residential window and patio door replacement projects are completed in a few days, depending on the number and type of windows being replaced. Our experienced installation team works efficiently and carefully to minimize heat loss and disruption during the process.
The biggest advantage of winter replacement? You experience the improvement immediately. Rather than waiting months, winter installation allows you to address comfort issues when they matter most—while reducing ongoing heat loss during the coldest part of the year.
Built for the Long Haul
At Great Plains Windows & Doors, we take a long-term aproach to window replacement. As an Andersen Certified Elite Contractor and Installer, we install products designed specifically for Midwest conditions and stand behind every project long after installation is complete.
Long-Term Benefits of Window Replacement
- Improved comfort and temperature consistency
- Reduced drafts and cold spots
- Increased energy efficiency
- Enhanced home value and structural integrity
If winter has exposed comfort issues in your home, now is the ideal time to address them. Schedule a winter consultation with one of our project consultants and start enjoying a warmer, more comfortable home—this season and for decades to come.