Choosing the right windows is one of the key decisions when building or renovating a house. Windows affect not only the appearance of the building, but also user comfort, energy efficiency, and security. Clients searching for the ideal solutions often ask many questions—both technical and practical. We have gathered the most frequently repeated ones and answer them based on the experience of Fintecnic experts.

What are the best windows for an energy-efficient house?

An energy-efficient house is one that retains heat inside and minimizes energy loss. That’s why the key parameter to pay attention to when choosing windows is the Uw heat transfer coefficient. The lower its value, the better—it means less heat “escapes” through the pane and frame. For energy-efficient houses, windows with a Uw coefficient below 0.9 W/m²K are recommended.

It’s also worth paying attention to the number of chambers in the profile, installation depth, use of warm edge spacers, and triple glazing. Such solutions are available in both PVC and aluminum systems offered by Fintecnic, and the choice of a specific model should depend on the building’s construction and the investment’s location.

What is the difference between aluminum and PVC windows—which to choose?

This is one of the most common questions from clients who are undecided between the modern aesthetics of aluminum and the more affordable price of PVC. PVC windows are lightweight, provide good thermal insulation, and are available in a wide range of colors. They are especially suitable for standard residential investments where the price-to-quality ratio is important.

On the other hand, aluminum windows stand out for their greater rigidity and resistance to weather conditions, making them an ideal choice for large glazing and modern architectural projects. They also have significantly slimmer profiles, allowing more light and a minimalist visual effect. Fintecnic offers aluminum systems that combine aesthetics with very good insulation parameters—such as Moreview or Skyline.

Which windows to choose for large glazing and modern projects?

For modern homes with open spaces and garden access, it’s worth choosing panoramic windows and sliding systems. They not only provide a spectacular visual effect but also functionality. Sliding systems such as HST or PSK allow for convenient opening of wide glazing without taking up space inside the room.

Fintecnic’s offer includes, among others, the Moreview system, which allows for creating almost invisible boundaries between the interior and exterior. Thanks to the use of slim profiles and large panes, it’s possible to achieve a very modern effect without compromising on security or thermal insulation.

What should you pay attention to when choosing window panes?

Panes are a key element of every window—it is through them that most heat and light passes. It’s worth paying attention to the number of chambers (spaces filled with gas, e.g., argon), low-emissivity coatings, and the type of glass used. Double-chamber (triple-glazed) panes are now the standard in energy-efficient construction.

Apart from thermal parameters, clients also ask about additional features: burglar-proof, soundproof, sun-protection, or self-cleaning panes. Everything depends on the needs of a particular building—requirements will differ for houses on busy streets, offices, or holiday homes.

Is it worth investing in windows with hidden sashes or slim profiles?

Aesthetics matter greatly—more and more investors are looking for windows with a minimalist look that do not disrupt the concept of modern architecture. That’s why windows with hidden sashes and systems with slim profiles, which maximize the amount of light in the room, are so popular.

Such constructions, although often more expensive, are an investment in prestige and design. Fintecnic offers solutions that combine aesthetics with functionality—for example, the Moreview or Skyline systems, which thanks to advanced technology offer excellent insulation parameters and a modern appearance.

What questions should you ask the seller before purchasing windows?

Choosing the right window model is not everything—it’s also important to make sure the manufacturer offers comprehensive service and technical support. Clients should ask about:

• certificates and approvals (CE, ISO, etc.),
• precise technical parameters (Uw, Rw, light transmittance),
• installation method and timing,
• warranty conditions,
• personalization options (color, glass type, handles, and fittings).

The Fintecnic team provides support at every stage of the investment—from technical advice, through individual designs, to installation and service. This is a guarantee of a safe and well-thought-out choice.

Making an informed choice of windows is an investment for years

Choosing windows is a decision that affects not only the appearance of the building but also everyday comfort. That’s why it’s worth taking the time to understand the differences between available solutions and make an informed decision. With the support of experienced Fintecnic advisors, clients can count on an individual approach, expert needs analysis, and the selection of solutions that will work for many years. Because good windows are not a cost—they are an investment in warmth, silence, safety, and aesthetics.