Fereastră LEMN-ALUMINIU HF310 Home Pure — Triplu, Passivhaus

Wood-aluminium window with triple glazing and thermal insulation down to Uw 0.71 W/(m²K), PassivHaus certified. Exceptional performance for comfort and energy efficiency.

The HF310 Home Pure series from Internorm is a window solution designed for modern homes that demand high standards of performance and durability. The profile combines the essence of wood with the protection of exterior aluminium, creating a window with a warm, natural appearance from inside while benefiting from resistance to adverse weather conditions and minimal maintenance on the outside. This material duality gives it a distinctive identity in premium showroom settings.

The construction on a broad wood-aluminium profile integrates three insulation chambers filled with high-density thermal foam. The triple glazing used in this window is equipped with low-e coatings that optimise natural light transmission while reducing heat loss. The Uw value of 0.71 W/(m²K) confirms superior thermal performance, while sound insulation (Rw 33–46 dB) ensures peace and acoustic comfort regardless of urban noise exposure. The window operates with predictable, reliable performance across diverse climate zones.

PassivHaus certification is not merely a label but evidence of rigorous manufacturing processes and testing in compliance with strict international standards. RC2 break-in resistance class provides medium protection against forced entry attempts, while the triple glazing contributes significant resistance to breakage and penetration. The profile is tested for wind and water resistance, guaranteeing long-term airtightness even in coastal environments or areas exposed to heavy rainfall.

The design of HF310 Home Pure respects harmonious proportions, with a reduced profile and elegant appearance that integrates seamlessly into contemporary and traditional architecture alike. Wood from managed forests and water-based paint finishes are selected for aesthetic durability and reduced environmental impact. Standard and custom forms are available, allowing architects and homeowners freedom of architectural expression.

This window is recommended for home renovations and construction projects with PassivHaus requirements, as well as any project where energy efficiency and acoustic comfort are priorities. Installation in accordance with Internorm standards and the use of appropriate framing systems guarantee maximum performance and longevity.

PassivHaus is an international standard that guarantees exceptional thermal performance — the HF310 Home Pure windows with Uw 0.71 W/(m²K) reduce heat loss by up to 75% compared to standard windows. This translates directly to lower gas consumption and smaller heating bills, and in passive houses, traditional central heating is no longer necessary.

The wood-aluminium combination offers what neither material alone can achieve: the exterior aluminium protects the wood from UV and weather without sacrificing thermal insulation, while the interior wood retains heat and provides premium natural aesthetics. The HF310 Home Pure benefits from this architecture — durability for 50+ years with minimal maintenance and thermal performance almost identical to equivalent PVC profiles, plus superior acoustic and aesthetic value (33-46 dB).

Triple glazing (HF310 Home Pure) versus double differs in 3 glass panes versus 2, with 2 air or argon/krypton chambers between them. This adds extra thermal insulation and reduces noise penetration by 3-6 dB. For Internorm windows with Uw 0.71, triple glazing is the investment that distinguishes a passive house from a near-zero-energy home — payback in 5-7 years through comfort and energy savings, plus acoustic protection for urban areas.

RC2 (Resistance Class 2) means the window has passed EN 1627 standardized tests simulating forced entry with hand tools (crowbars, jacks). The HF310 Home Pure with RC2 and multi-point hardware resists at least 3 minutes of direct attack — enough to deter opportunistic burglars. RC2 certification is verifiable on the product certificate provided at delivery; for maximum security in high-risk areas, Internorm also offers RC3 variants.

The exterior aluminium requires no treatment — just annual cleaning with water and mild detergent. The interior wood should be varnished/painted every 8-10 years (depending on UV exposure and climate), a straightforward procedure done by a local specialist. The HF310 Home Pure is designed for 50+ years with minimal maintenance — the aluminium protects the wood from degradation, and the warm-edge spacer between panes prevents condensation and rot. In harsh climates, seal and gasket checks are recommended every 5 years.

The HF310 Home Pure is fully made-to-order — accepts any size and configuration (fixed, manually opening, tilt, combinations). For colours, Internorm's wood-aluminium offers standard Nordic White with silver exterior aluminium, but allows custom wood finishes (mahogany, oak, wenge) and anodized aluminium options (bronze, grey). Ordering involves on-site dimensioning and 6-8 week manufacturing; installation is included and adjusted to existing window openings.