Learn how to adjust PVC windows yourself for winter and summer. Improve sealing, reduce heat loss and ensure year-round comfort in your home.
Did you know that many modern PVC windows have a hidden feature that lets you adapt them to the changing seasons in Poland? It is called seasonal adjustment – a simple mechanism that changes the pressure of the window seal.
This small adjustment, carried out twice a year, is an effective way to improve home comfort, increase energy efficiency and even extend the lifespan of your windows. In this guide we explain the principle behind winter and summer modes, how to adjust windows yourself, and when to call a professional.
The purpose of seasonal adjustment is to make your windows work intelligently in cold and warm weather alike.
Winter goal: maximum heat retention. Setting windows to 'winter mode' increases the pressure of the sash against the rubber frame seals.
Benefits: better sealing, less heat loss, lower heating bills, no draughts.
Summer goal: better air circulation and less stress. Switching to 'summer mode' reduces the pressure on the seals.
Benefits: easier opening, better micro-ventilation, less stress on seals, longer lifespan.
Window adjustment is simple and takes just a few minutes:
Find the cams – open the window and look at the side of the sash.
Check the markings – the closer the marker is to the seal, the tighter it is.
Winter mode – turn the cams inward to increase pressure.
Summer mode – turn the cams outward to reduce pressure.
Check the seal – use the paper test.
Contact specialists if:
The window frame is deformed or damaged.
You still feel a draught even in winter mode.
The handle, hinges or lock are stiff.
The window is misaligned and difficult to open.
This simple procedure, carried out twice a year, helps maintain home comfort and reduce energy costs.
Seasonal window adjustment is not just about comfort – it is also an intelligent way to save energy and money. A few simple steps keep your home warm and well-sealed in winter and comfortably ventilated in summer.
If you would like a professional to do it for you – book a window adjustment service here: https://www.naprawa-okna24.pl
Our technician will come, assess and fix it. Free call-out.
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The advantages of working with our team of professionals
No-cost initial assessment to identify the problem.
up to 5-year guarantee on completed work. Manufacturer or supplier warranty on replaced components – depends on the specific part used.
Our technicians arrive promptly to address your needs quickly.
99% of repairs can be completed during the first visit.
We work with all types of window and door profiles and manufacturers.
Pay by card, cash, or we can issue an invoice.
Everything you need to know about our window and door repair services
Yes, the initial diagnostics and our technician's visit to assess the work are completely free. No hidden costs and no obligations. If you decide to proceed with the service, the technician will provide a clear quote on site, explain all the details, and if needed – can start work immediately and complete the repair during the same visit.
Absolutely! We provide a warranty for both the services performed and the materials used – in accordance with applicable regulations.
We cover all of Poland, with a particular focus on major metropolitan areas: Warsaw and surroundings, Kraków and Małopolska, Łódź area, Poznań and surroundings, Katowice and all of Silesia (Sosnowiec, Gliwice, Chorzów, Bytom, Zabrze, Tychy and 30+ cities). Call us – we'll call back within 15 minutes to arrange a visit.
The price depends on the type of window, the nature of the issue, and the materials needed. Upon arrival, the technician will provide an exact quote on site with no hidden fees, and you decide whether you want to proceed with the work.
Booking a free diagnostics is very simple. Just call our contact number or fill in the registration form – either way it only takes a few minutes.
In most cases, repair is sufficient: replacing seals or hardware, sealing, adjustment, cleaning and lubricating the mechanisms. This is a much cheaper solution than installing new windows.
Repair is cheaper because you don't need to buy a new window, remove the old one, dispose of it, or carry out finishing work after installing a new unit. Repair saves both time and money, being a significantly more cost-effective solution.
We service windows from all major manufacturers, including: Rehau, Veka, KBE, Schuco, Salamander, Aluplast and many others. Our technicians undergo training on the specific mechanisms of each manufacturer.
Yes, we accept all major payment cards, bank transfers and cash. Payment is made after the work is completed.
Yes, we provide services all year round. During winter, we carry out window servicing using special methods to avoid cooling down the rooms and ensure maximum comfort.
Balcony door adjustment for PVC or aluminium doors starts from 80 zł. It includes precise 3D adjustment of hinges and fittings, eliminating sagging, draughts and closing issues. Free on-site diagnostics – the technician will quote on arrival.
Yes. We specialise in sliding and HST terrace door service for all major systems: Schüco ASS 70/77, Aluprof MB-77 HS, Aliplast Imperial. We replace load rollers, repair tracks, adjust closing pressure and service drive mechanisms. From 150 zł.
A window ventilator (trickle vent) is a ventilation device fitted in or above a window frame, providing a constant supply of fresh air without opening the window. Since 2021 (Polish building regulations WT 2021), ventilators are mandatory in new buildings. We install pressure-controlled, humidity-sensitive and acoustic ventilators – from 80 zł each.
After your enquiry we call back within 15 minutes and agree a time. In most cities (Warsaw, Katowice, Łódź, Poznań, Kraków) a technician arrives the same or next working day. For urgent cases such as a fallen hinge or jammed door, we aim to arrive within a few hours.
