AluNext is the newest hybrid system, succeeding the now-dated Unity range. It bonds 100% recycled PVC with aluminum to bring together the strengths of both materials. The outcome is the impeccable look of a premium aluminum window — crisp corners and matte finishes — paired with the thermal behaviour of the finest plastic profile.
It is an eco-conscious, fully recyclable solution that satisfies the most demanding standards of contemporary architecture. For anyone developing exclusive property in Spain, AluNext is the window of the future.
Brand
Kömmerling — European leader in PVC profile production with over 125 years of history. Their windows combine German precision with maximum energy efficiency, making them the best choice for projects requiring uncompromising quality.
More about KömmerlingTechnical Specifications
A window that looks just like premium aluminium from outside, yet keeps the warmth and comfort of plastic indoors. An exceptionally robust system — built for large panoramic windows that won't warp in the heat.
Core system specifications:
Glazing and infill choices:
Maximum size limits:
Tested performance values:
Documentation
A window that looks just like premium aluminium from outside, yet keeps the warmth and comfort of plastic indoors. An exceptionally robust system — built for large panoramic windows that won't warp in the heat.
For a standard 2-sash tilt-and-turn window (1200 × 1400 mm) with basic double-glazed unit.
Alternative solutions from other manufacturers
Side by side
How Kömmerling AluNext MD stacks up against the closest matches from other brands.
| Specification | Kömmerling AluNext MDThis profile | Schüco LivIng 82 | WDS 8S | Rehau Geneo |
|---|---|---|---|---|
| Brand | Kömmerling | Schüco | WDS | REHAU |
| Material | PVC | PVC | PVC | PVC |
| Profile depth | 80 mm | 82mm | 82mm | 86mm |
| Chambers | — | 7 chambers | 6 chambers | 6 chambers |
| Glass unit, max | up to 56 mm | up to 52mm | 44 mm / 52 mm | up to 53mm |
| Thermal (Uw) | ≤ 0.8 | 0.8 | 0.88 | 0.85 |
| Sound (Rw, dB) | ≈ 45 Rw(dB) | ≈47 Rw(dB) | ≈48 Rw(dB) | ≈50 Rw(dB) |
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FAQs
AluNext MD is an 80 mm hybrid Alu-PVC system with 7 chambers and a triple EPDM seal circuit (MD centre-seal). The aluminium is built structurally into the profile rather than clipped on. Tested values: Uf 1.0 W/m²K, Uw ≤ 0.8 W/(m²·K), energy class A+, watertightness 9A, air permeability Class 4, wind load C5.
The system accepts a glazing unit up to 56 mm — the largest in Kömmerling's window range, matching the flagship 88 MD. That depth leaves room for triple glazing or thick acoustic/safety laminates, supporting the ≤ 0.8 W/(m²·K) Uw and the ≈ 45 dB acoustic damping. The structural aluminium adds the rigidity needed to carry that heavier glass in large sashes.
Thanks to the integrated aluminium, AluNext MD reaches a tallest leaf of up to 2600 mm and a widest leaf of up to 1600 mm, making it suited to large panoramic sashes. This is its defining strength — large openings in heavy glazing without the warping risk of slimmer all-PVC frames.
Security tops out at RC2, so projects needing higher burglar resistance must look elsewhere. Sashes are also capped at 2600 × 1600 mm. For pure acoustic performance the all-PVC 88 MD (≈ 50 dB, Uw ≤ 0.72) goes further, and for very large sliding spans the PremiDoor 88 is the dedicated system.
Against the all-PVC range it sits near the top by numbers:
Because the aluminium is structural rather than glued, AluNext MD shows immaculate 90° corner joints and matte architectural coatings instead of welded PVC corners — a genuine aluminium appearance with the warmth of PVC indoors. It is 100% recyclable, using mechanical material connections in place of adhesive joints, so the aluminium and PVC separate cleanly at end of life.
