Product introduction of Passive internal casement aluminum window:
Passive internal casement aluminum window is a modern window product that integrates high efficiency, environmental protection and superior performance. It is suitable for various places such as residential buildings and commercial buildings. Using advanced passive design and high-quality aluminum materials, it has excellent thermal insulation, sound insulation and safety performance, providing users with a comfortable living environment. Passive internal casement aluminum window can be opened flatly inward, ensuring stable indoor temperature and effectively saving energy. The Passive internal casement aluminum window is made of high-strength aluminum, which has extremely high wind pressure resistance and safety. With professional sealing strips, it can significantly reduce external noise and provide a quiet indoor environment.
Product advantages of European style inner casement window:
The biggest highlight of the Aluminum Alloy Casement Window glass produced by etaifeng is its exceptional energy efficiency and sound insulation performance. Aluminum Alloy Casement Window utilizes a low thermal conductivity thermal break structure, coupled with triple-layered Low-E glass, resulting in a very low overall U-value. This provides better insulation in winter and saves on air conditioning in summer. The inward-opening and tilt-and-turn design of Passive aluminum window Aluminum Alloy Casement Window is also particularly practical. Cleaning the glass is convenient when opening inwards, while maintaining natural ventilation when tilted inwards. It also prevents rainwater from entering, making it suitable for bedrooms, children's rooms, and offices. Aluminum Alloy Casement Window's sealing is also robust, with three or even four EPDM sealing strips and a deep cavity structure, easily achieving sound insulation of 35–45 dB. Even those living near busy streets can experience a sense of quiet. Because Aluminum Alloy Casement Window has high safety and strength requirements, our frame and glass are very thick, making it perfectly suitable for high-rise buildings. Thermal Insulation Passive Window for European style inner casement window is equipped with European standard concealed hardware and a multi-point locking system, ensuring smooth operation, durability, and high security, and it is not prone to loosening even after prolonged use.
Product Applications of Thermal Insulation Passive Window:
The Thermal Insulation Passive Window type manufactured by etaifeng is suitable for a wide range of applications, including homes, hotels, and high-performance energy-efficient buildings. For bedrooms and living rooms, sound insulation and heat preservation are paramount, and the Thermal Insulation Passive Window performs exceptionally well, maintaining a comfortable indoor temperature year-round. It's also ideal for hotels and apartments because its inward-opening design facilitates cleaning and provides excellent sound insulation, significantly enhancing the guest experience. For public places like office buildings, schools, and hospitals, the Thermal Insulation Passive Window's tilt-and-turn function maintains ventilation without worrying about rain or safety risks, offering greater peace of mind.
The key innovation is achieving passive house thermal performance in an operable tilt-turn window — previously only possible with fixed windows or timber frames. This means residential passive house projects can offer residents the same convenience and functionality as standard premium apartments: tilt for draft-free ventilation, turn for full opening and cleaning. The adjustable hinge system is particularly valuable for passive house projects where millimeter-precise installation is critical to maintaining the continuous air barrier and insulation layer.
Uw (whole window) | ≤0.85 W/m²K (PHI certified) | 1.0-1.4 W/m²K | 0.75-0.90 W/m²K (timber) |
Uf (frame only) | 0.72 W/m²K | 0.90-1.30 W/m²K | 0.65-0.90 W/m²K |
Hardware thermal isolation | All points thermally broken | Partial or none | N/A (timber is insulating) |
Sightline width | 90mm | 75-95mm | 105-135mm |
Hinge adjustment | 3-axis ±3mm post-install | 2-axis ±1.5mm | Varies |
Air tightness | Class 4 (≤0.5 m³/m·h) | Class 3-4 | Class 3-4 |
PHI Certification | Certified component | None | Varies |
· Passivhaus-certified apartment buildings — operable tilt-turn windows in every room meeting PH standards
· Cold-climate multi-residential (Canada, Scandinavia, Northern China) — tilt ventilation in winter without drafts
· Luxury eco-residences — passive house performance without compromising on premium aluminum aesthetics
· Mixed-use passive buildings — residential upper floors with operable windows, commercial ground floor with fixed
· Retrofit to EnerPHit standard — replacement windows meeting the stricter retrofit passive house requirements
· Healthcare passive buildings — patient-controlled ventilation with hospital-grade hygiene surfaces
· Educational passive buildings — classroom ventilation without compromising thermal performance
Item | Parameter Range | Description |
Whole-Window U-value | ≤0.85 W/m²K | PHI certified for operable tilt-turn configuration. Varies with window size. |
Frame U-value | 0.72 W/m²K | 44mm PA66 GF25 thermal break with integrated foam insert. All hardware thermally broken. |
Glass Ug | 0.53 W/m²K | Triple: 4/16Ar/4/16Ar/4 with double Low-E. Warm-edge spacer (Swisspacer or equivalent). |
Sash Dimensions (Max) | 1,200mm (W) × 2,200mm (H) | Operable tilt-turn sash. Max weight 130kg. Fixed panels available in larger sizes. |
Locking Points | 12-14 perimeter | Multi-point locking with thermally broken bosses. Central locking via handle with 2-stage operation. |
Air Tightness | Class 4 (≤0.5 m³/m·h) | Critical for n50 ≤0.6 ACH. Each locking point increases gasket compression by 0.3mm. |
Thermal Break Width | 44mm PA66 GF25 + foam | Foam insert increases thermal resistance of break from R=1.3 to R=2.1 m²K/W. |
Sightline | 90mm (frame + sash) | Comparable to standard aluminum windows. Slimmer than timber passive house frames. |
Acoustic Performance | 38-46 dB (Rw) | Triple glazing provides inherently good acoustic performance. Laminated glass: 43-48 dB. |
Hinge Adjustment Range | ±3mm (3 axes) | Post-installation adjustment to compensate for building settlement. 4mm hex key operation. |
Condensation Factor | fRsi ≥0.72 | Verified by thermography. Interior surface temperature stays within 2°C of room temperature. |
Why choose us?
The reason buyers choose etaifeng is because we can provide truly "passive" grade European style inner casement windows, not just a simple upgraded version of ordinary thermally broken windows. Whether it's the glass, profiles, seals, or hardware, we configure everything according to passive building standards and provide complete performance testing data, making it easier for projects to pass approval. We also strictly control the entire production process, from profiles to glass to European style inner casement window assembly, ensuring stability and reliability at every step. Furthermore, with many years of export experience serving over 30 countries, we are very familiar with packaging, container loading, and transportation, so buyers don't need to worry at all. We also offer comprehensive after-sales service, including installation guidance, commissioning plans, and maintenance manuals, allowing customers to have a smoother and more worry-free Passive aluminum window delivery. Overall, it's professional, stable, and hassle-free.
FAQs of Passive aluminum window:
1. What is the difference between Passive aluminum window and ordinary thermally broken windows?
Passive aluminum windows offer superior insulation, sealing, and soundproofing. They have thicker glass, more sealing features, and a lower U-value, resulting in significantly higher overall performance.
2. Is the tilt-and-turn function of European style inner casement windows safe? Will it leak?
No. When tilting inwards, airflow enters from the top, preventing rainwater from flowing back in. European style inner casement window also employs a concealed drainage structure, effectively preventing water accumulation.
3. Can Passive aluminum window Aluminum Alloy Casement Windows be triple-glazed?
Yes, we recommend triple-glazed windows with two cavities, as passive windows achieve optimal insulation and soundproofing with triple glazing.
4. Does Aluminum Alloy Casement Window support large sizes? Will it be too heavy?
Large sizes of Thermal Insulation Passive Windows can be customized to meet project requirements. We use a high-load-bearing hardware system, ensuring no sagging or deformation even after long-term use.
About us:
Liaoning E-taifeng Co.,Ltd started in 1995 and has been focusing on door and window design and manufacturing for more than 20 years. In 2002, it became a member of the European Door and Window Association and obtained ISO9001 international quality system certification. The Passive aluminum window we produce provides customers with the best user experience with its excellent performance and high-quality services.
