Winterizing your windows: how to prepare your windows for the cold season!
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Preparing windows for winter: the most important points at a glance
To ensure that your windows remain efficient, airtight, and durable during the heating season, it is important to find the right combination of care, adjustment, and inspection. These measures are crucial for preventing heat loss and complying with the legal requirements of the Building Energy Act (GEG):
Cleaning: Clean frames, glass, and seals regularly to ensure that they remain airtight.
Check seals: Replace porous or cracked sealing strips to prevent drafts
Lubricate fittings: Lightly oil moving parts to keep them running smoothly.
Increase contact pressure: Set windows to winter mode for maximum tightness and energy savings
Ventilate briefly and vigorously several times a day to reduce humidity instead of leaving windows tilted open continuously
Insulate: Apply heat protection films or insulating tapes if necessary.
Observe legal requirements: GEG and standards such as DIN EN 14351-1 regulate how energy-efficient and airtight windows must be.
Use expertise: If you are unsure about the correct setting or seal, Salamander myWindow can help with advice – for tested quality and tailor-made solutions.
Legal requirements for window winter mode: what you should pay attention to
To ensure that your windows are not only functional but also legally compliant in winter, they should meet the latest energy efficiency requirements. The Building Energy Act (GEG) and various DIN standards specify how well windows must insulate in order to reduce heat loss and energy consumption. Correct adjustment in winter mode helps to ensure that these values are reliably maintained in practice.
These standards apply to your windows in winter mode:
Building Energy Act (GEG): For new buildings, a maximum U-value of 1.3 W/m²K applies; for renovations, windows must generally achieve a U-value of at least 1.1 W/m²K in order to meet the legal requirements.
Subsidy programs (KfW, BAFA): Government subsidies and loans are usually only available if windows have a particularly low U-value of ≤ 0.95 W/m²K. Professional adjustment in winter mode can help to ensure this efficiency.
DIN EN 10077: This standard regulates how the heat transfer coefficient (U-value) for windows is determined and forms the basis for manufacturer specifications and test values.
DIN 4108: This standard describes the general requirements for thermal insulation and energy saving in buildings to ensure efficient and sustainable energy consumption.
What does winter mode mean for windows?
In winter, it is important that your windows close tightly to prevent heat loss. Many modern tilt-and-turn windows have a so-called winter mode for this purpose, which allows you to easily adjust the contact pressure. This keeps the heat inside and the cold and drafts outside.
What winter mode means for windows in concrete terms:
Tighter seal: In winter mode, the window sash is pressed more firmly against the frame. This reduces air exchange and provides effective protection against draughts and cold.
Targeted adjustment for the heating season: This mode ensures that the window loses as little heat as possible to the outside in winter – an important contribution to energy efficiency.
Mechanical implementation: Winter mode is set using mushroom head pins or eccentric bolts on the fitting. A small turn changes the contact pressure of the window sash.
Direction indicator: If the mark on the pin points towards the seal, the window is in winter mode; if it points outwards, it is in summer mode.
Standards and legal requirements: Thanks to the improved seal, the window more easily meets the requirements of the Building Energy Act (GEG § 48) and DIN EN 12207 on air permeability.
Purpose and benefits: Winter mode optimizes thermal insulation, prevents condensation, and increases comfort—a simple but effective step toward greater energy efficiency.
Advantages of winter mode – why it's worth making the switch
Now the question arises: why is it worth the effort? The answer is simple – a correctly adjusted window in winter mode has multiple positive effects on your home and your energy consumption.
Window winter mode offers the following advantages:
Noticeably more warmth in the room: No more cold drafts at your feet or by the window—the warmth stays where it belongs.
Lower heating costs: Less heat escapes thanks to improved sealing. This reduces the load on the heating system and saves you money every month.
More comfort in everyday life: Rooms remain at a consistent temperature, window surfaces cool down less – perfect for cozy winter evenings.
Protection against moisture and mold: More airtight windows prevent condensation from forming. This ensures a healthier indoor climate and protects walls and furniture.
Better sound insulation: The increased contact pressure also has a sound-insulating effect – street noise and wind noise are reduced.
Fewer draughts with older windows: Especially with existing windows, readjustment is an easy way to achieve greater tightness without replacement.
Longer service life of the seals: Even pressure prevents rubber seals from becoming brittle or leaky.
Sustainable living comfort: Lower energy consumption reduces CO₂ emissions and supports environmentally conscious living.
Increased property value: Energy-efficient windows meet the requirements of the Building Energy Act (GEG) – a plus point for renovations or sales.
Better room feel: With less cold on the window pane, the entire room feels more comfortable, even when outside temperatures are low.
Switching windows from summer to winter mode – effective measures
Windows can be set to winter mode in different ways, depending on their design, fitting system, and material. The aim is always to increase the contact pressure between the sash and frame so that the windows close more tightly during the heating season.
The following measures show you the options available for preparing your windows for winter in the best possible way:
1. Adjusting window fittings with eccentric bolts
If your windows have eccentric bolts, you can close them more tightly in just a few simple steps. These round bolts usually have a small mark indicating how strongly the sash is pressed against the frame.
How it works: By turning the eccentric bolt, you can change the pressure with which the sash sits on the frame.
Direction: clockwise = stronger pressure (winter mode); counterclockwise = weaker pressure (summer mode)
Recognition: If the mark points towards the seal, winter mode is active; if it points outwards, the window is in summer mode.
Advantages: A tighter seal noticeably reduces heat loss and draughts.
Difficulty: A little finesse is required – too much pressure can compress the seals over time.
2. Adjustment via mushroom head pins
Many modern tilt and turn windows have mushroom head pins that act as movable closing elements. They can usually be adjusted by hand or with an Allen key. This allows you to adjust the contact pressure precisely and evenly.
How it works: When closing, the mushroom head slides into the locking part in the frame, thus determining the tightness.
Adjustment: A small turn toward the seal increases the contact pressure.
Scope: A quarter to half turn is usually sufficient to achieve the optimal winter mode.
Advantages: Quick and easy to do, no specialist knowledge required. You will immediately notice that the window closes more tightly.
Difficulty: Turning too tightly can lead to increased friction – it is better to readjust in small steps.
3. Window handle with multi-stage locking
On some windows, you can also adjust the contact pressure using the window handle itself. The handle position plays a particularly important role in ensuring a tight seal on newer models with multi-stage locking.
How it works: When fully closed, the handle locks all locking points around the window.
Adjustment: Make sure that the handle points vertically downwards when closing – only then is the window completely locked.
Partially open position: When the handles are half closed, there is less pressure, which can lead to draughts.
Advantages: No tools required, immediate effect – perfect for everyday use.
Difficulty: Fine adjustment of the handle may vary slightly depending on the manufacturer; not available on older models without a multi-stage mechanism.
4. Adjustment via frame parts
In older or special window systems, the contact pressure can also be adjusted via the strike plates in the frame. This variant is often used for aluminum or wooden windows.
How it works: The installer moves the locking parts slightly inwards or outwards to change the pressure when closing.
Tools: This usually requires a screwdriver or special tools.
Advantages: Particularly effective for warped windows or windows that are difficult to close.
Difficulty: This adjustment should only be carried out by a specialist company – incorrect adjustment can lead to leaks or damage to the frame.
5. Combination of multiple adjustment points
Modern windows usually have several adjustment points—some eccentric, some mushroom-shaped—distributed across the entire sash. It is worth adjusting all points evenly.
Function: Each adjustment point influences the tightness at its position.
Procedure: All points should be adjusted evenly to avoid tension in the sash.
Advantages: Uniform contact pressure ensures optimum tightness and extends the service life of the fittings.
Difficulty: Inconsistent adjustment can lead to warping – if you are unsure, it is better to have it checked by a fitter.
How do I set my windows to winter mode? Step-by-step instructions
Once you know which fittings are installed on your windows, you can switch them to winter mode yourself in just a few simple steps. Make sure you work carefully and with a little finesse—then the changeover will only take a few minutes.
Step 1: Open the window completely
Open the window sash completely so that you can see the fittings on the side clearly.
This allows you to see immediately whether your window has eccentric bolts or mushroom head pins.
On older windows, the adjustment point may be slightly concealed – have a flashlight ready.
Advantage: You have free access to all relevant parts and avoid damage.
Step 2: Identify the adjustment points
Look for the small round or oval bolts, usually made of metal.
Eccentric bolts: have a mark or notch.
Mushroom pins: look like mushrooms and engage with the locking part in the frame.
Advantage: You know exactly where you can change the contact pressure.
There are usually 2–4 adjustment points along the window sash.
Step 3: Prepare your tools
With the right tools, adjustment is easy and safe.
An Allen key (4 mm or 6 mm) or a screwdriver is usually sufficient.
Have a soft cloth ready to wipe off grease or metal filings.
Optional: some spray oil if the mechanism is stiff.
Advantage: You can work precisely and avoid scratching the frame or fittings.
Step 4: Adjust the contact pressure
Now set the window to winter mode by turning the bolts.
Turn clockwise = stronger pressure (winter mode)
Turn counterclockwise = lower pressure (summer mode)
Only turn a quarter to half a turn – more is usually not necessary.
Advantage: The sash fits more tightly against the frame, heat stays in the room, and drafts disappear.
Tip: Turn all adjustment points evenly to achieve uniform tightness.
Step 5: Check function
Close the window and check that it closes smoothly but noticeably more tightly.
If the handle is difficult to move, the pressure is too high – turn it back slightly.
Listen for a slight click when locking: this indicates that the fittings are engaging correctly.
Advantage: The window remains sealed without squeezing the seals.
Step 6: Check seals and fittings
After adjusting, it is worth briefly checking the surrounding components:
Check seals for cracks or deformations.
Lubricate moving parts with resin- and acid-free spray grease.
Wipe off excess oil so that no dust sticks to it.
Advantage: Your window will remain smooth-running, tight, and durable.
Step 7: Test the result
Stand in front of the closed window and check:
Feel test: Is there a draft anywhere? If so, readjust slightly.
Candle or lighter test: If the flame flickers, the window is not completely sealed.
Moisture test: No condensation? Then the setting is correct.
Tip: Perform the test on a windy day – this is the best way to see any leaks.
Advantage: You can immediately see whether your windows are really winter-proof.
Step 8: Reset in spring
When it gets warmer, you should reduce the contact pressure again.
Turn the bolts slightly counterclockwise to switch to summer mode.
This keeps the seal elastic and slows down wear and tear.
At the same time, air circulation improves during the warm season.
Advantage: You protect your windows and significantly extend their service life.
Note: Winter mode = greater tightness and thermal insulation Summer mode = better air circulation and longer seal service life
Window care in winter mode – how to keep your windows winter-proof
Even if your windows are properly set for winter mode, the thermal insulation will only work in the long term if you maintain them regularly. Seals, fittings, and frames are subject to greater stress, especially in winter. With a few simple care steps, you can extend their service life and maintain their full sealing effect:
Clean and maintain seals: Remove dust and dirt with a mild cleaning agent and treat the rubber seals every few months with silicone oil or rubber care stick to keep them supple.
Lubricate fittings: Apply resin- and acid-free spray grease to scissor bearings, corner deflectors, and pivots annually to keep them running smoothly and prevent corrosion.
Clean frames and rebates: Wipe frames, glass, and rebates regularly with a damp, soft cloth. Clean surfaces prevent friction and material wear.
Remove condensation: Wipe moisture off the window pane regularly to prevent mold growth.
Ventilate properly: Ventilate briefly several times a day to keep the room climate fresh without letting the walls cool down.
Check regularly: Check the contact pressure and condition of the seals at least twice a year. Early readjustment prevents energy loss.
Use a specialist check: If fittings are sticking or seals are badly worn, professional maintenance by the experts can help.
Expert tips from Salamander myWindow for perfectly adjusted winter windows
To ensure that your windows remain energy-efficient, airtight, and easy to operate in the long term, our experts have compiled the most important professional tips for you:
Check once a year: Adjust the contact pressure at the beginning of each heating season to maintain consistent thermal insulation.
Do not overload seals: Excessive pressure can compress rubber seals over time. It is better to adjust step by step.
Keep an eye on humidity: A relative humidity of 40 to 60% prevents condensation and protects the frame and glass.
Don't forget maintenance: Clean fittings and rebates regularly to prevent dirt and dust deposits that impair the seal.
Professional inspection: If windows are difficult to close, feel warped, or moisture remains despite maintenance, consult the experts at Salamander myWindow. They will check the settings, provide maintenance tips, and, if desired, refer you to specialist partners for maintenance and readjustment.
Pay attention to quality: Windows with innovative technologies such as climAktiv Plus and evoCore ensure excellent insulation values and long-term stable function – regardless of the season.
Switch your windows to winter mode with Salamander myWindow
With Salamander myWindow, you can ensure that your windows are perfectly prepared for the cold season—for a warm home, lower heating costs, and long-lasting seals. Thanks to innovative systems such as climAktiv Plus, the heat stays where it belongs: inside the room. Our intelligent fitting solutions enable precise adjustment of the contact pressure so that your windows seal tightly in winter and allow easy ventilation in summer.
Your advantages with Salamander myWindow:
Energy-efficient throughout every season: Our window systems can be easily switched from summer to winter mode – for optimum tightness during the heating season.
climAktiv Plus technology: This multi-chamber profile technology reduces thermal bridges and noticeably improves insulation performance – perfect for saving heating energy.
Precise adjustment: The contact pressure can be individually adjusted so that your windows always close exactly as the weather demands.
Durable seals: High-quality materials and perfectly matched fittings ensure that windows remain tight and smooth-running even after many years.
Sustainable and comfortable: With recycled profiles, evoCore technology, and certified Salamander quality, your home stays warm – and the environment is protected.
Professional maintenance: Our experts take care of professional adjustment and care as needed.
Greater living comfort: Tight-fitting windows mean lower heating costs, less noise, and a noticeably more pleasant indoor climate.
Start the cold season now with perfectly adjusted windows—use the myWindow C3 configurator to find the right solution for your home, or contact us for a personal consultation with our specialist partners.
FAQ: Frequently asked questions about window winter mode and preparing for winter
Want to know how to best prepare your windows for winter? Our frequently asked questions about window winter mode provide concise answers and tips for a warm, dry, and energy-efficient home.
What to do about damp windows in winter?
Damp windows occur when warm indoor air meets cold glass surfaces and condenses there. This is particularly common in winter, as the temperature difference between indoors and outdoors is significant. It is important to ventilate regularly and properly.
This helps against damp windows:
Ventilate intermittently instead of continuously: open the window wide several times a day for 5 to 10 minutes
Keep the room temperature constant: cold surfaces promote condensation
Promote air circulation: place furniture at a slight distance from the windows
Clean windows and seals: dirt attracts moisture
Tip: If moisture continues to appear despite regular ventilation, the cause may be insufficient contact pressure or a worn seal. In this case, you can contact Salamander myWindow directly. Maintenance and adjustment of your windows is carried out by the specialist dealer from whom you purchased them. Please contact this dealer directly for advice or to make an appointment.
Why does it make sense to increase the contact pressure on windows in winter?
Higher contact pressure ensures that the window sash is pressed more firmly against the frame. This makes the seals tighter, prevents draughts, and reduces heat loss. The indoor climate remains more constant and heating costs are reduced.
In summer, the pressure should be reduced again to protect the seals and maintain their elasticity.
With Salamander myWindow window systems, you can rely on perfectly coordinated fitting systems that make it particularly easy to switch between summer and winter modes – for lasting tightness and optimal function.
Do windows have summer and winter settings?
Yes, many modern windows have a summer and winter setting that can be adjusted via the fittings. This allows the contact pressure to be adjusted to the season:
Summer mode: lower pressure, better air circulation, protection of the seals.
•inter mode: higher pressure, better sealing, less heat loss.
The setting is adjusted using small eccentric bolts or mushroom head pins, which can be easily turned with an Allen key. Salamander myWindow windows are designed to be particularly user-friendly, so that switching between modes is precise and easy – without any complicated technology.
Why should windows not be tilted in winter?
A permanently tilted window leads to constant heat loss and causes the adjacent walls to cool down significantly. This increases the risk of mold growth and significantly raises heating costs. Instead, we recommend brief, targeted bursts of ventilation: open the windows wide, ventilate for 5 to 10 minutes, then close them again. This allows the air to circulate effectively without cooling down the room.
Tip: You can find more details and practical tips in our blog article “Ventilating properly: How to prevent mold growth.”
Do windows have a winter setting?
Yes, most tilt-and-turn windows have a winter setting. This allows you to increase the contact pressure so that the window closes more tightly in winter and no cold drafts can enter. The mark on the fitting indicates the winter mode position – usually when it points towards the seal. A quarter to half turn is sufficient to make the adjustment.
Salamander myWindow systems feature high-quality fittings that ensure particularly even pressure distribution. This protects the seals, increases service life, and ensures maximum energy efficiency – completely automatically.