UW- value ≤ 0.7

Kömmerling 88 MD is the pinnacle of engineering thought in PVC systems. The 88 mm mounting depth and seven air chambers inside the profile allow for incredible thermal insulation performance. This window literally blocks external heat, maintaining the indoor microclimate even without active use of air conditioning.

The system is designed for installation of heavy triple-glazed units up to 56 mm thick. If your project requires Passivhaus certification or you simply want the best that exists in the glazing industry today — 88 MD has no competitors.

Technical Specifications

Details

Maximum protection from heat and noise. The thickest and most powerful system for those who want to save as much as possible on air conditioning. Your home will have absolute silence, even if windows face a busy road.

Energy efficiency
A++
Material
PVC (Ultra-Premium)
Profile depth
88 mm
Insulation
7 chambers / 3 seals
Glazing unit
up to 56 mm
Thermal protection (Uw)
≤ 0.72 W/(m²·K)
Sound insulation
≈ 50 Rw(dB)

Structural system parameters:

  • Mounting depth: 88 mm.
  • Profile construction: 7-chamber system with insulating thermal inserts in chambers.
  • Standard: Optimized for zero-energy homes (Certified Passivhaus System).
  • Sealing system: Triple-seal with special rebate gasket for maximum compression.
  • Reinforcement: Heavy-duty closed steel section for extreme loads.

Glazing and infill options:

  • Maximum infill thickness: up to 56 mm.
  • Infill types: Triple-chamber glazing units with krypton/argon, next-generation vacuum units.

Maximum structure dimensions:

  • Maximum sash height: up to 2500 mm.
  • Maximum sash width: up to 1500 mm.

Certified specifications:

  • Profile thermal insulation (Uf): 0.95 W/m²K.
  • Window thermal protection (Uw): up to 0.72 W/m²K.
  • Sound insulation: up to 48-50 dB (best in class).
  • Durability: Designed for 50+ years of operation.

Kömmerling 88 MD

Maximum protection from heat and noise. The thickest and most powerful system for those who want to save as much as possible on air conditioning. Your home will have absolute silence, even if windows face a busy road.

Average market price:

For a standard 2-sash tilt-and-turn window (1200 × 1400 mm) with basic double-glazed unit.

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UW- value ≤ 1.1

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Insulation
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Sound insulation
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Energy efficiency
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Material
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Insulation
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Thermal protection (Uw)
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Sound insulation
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UW- value 1.3

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Energy rating
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Profile chambers
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Thermal protection
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Sound insulation
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UW- value 0.94

Rehau Synego

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Energy rating
A++
Profile chambers
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Profile depth
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Thermal protection
Uw ≤ 0.94 W/(m²·K)
Sound insulation
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UW- value 1.2

Rehau Brillant-Design 70

Premium 70 mm system with elegant design, smooth HDF surface and good thermal insulation properties. HDF
Energy rating
A
Profile chambers
5 chambers
Profile depth
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Profile height
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Glass unit
up to 42mm
Thermal protection
Uw ≤ 1.2 W/(m²·K)
Sound insulation
≈43 Rw(dB)

Side by side

Head to Head: Closest Competitors

How Kömmerling 88 MD stacks up against the closest matches from other brands.

SpecificationKömmerling 88 MDThis profileRehau Geneo PHZCortizo A 84 PassivhausSchüco LivIng 82
BrandKömmerlingREHAUCortizoSchüco
MaterialPVCPVCPVCPVC
Profile depth88 mm86mm84 mm82mm
Chambers6 chambers7 chambers
Glass unit, maxup to 56 mm53mmup to 56 mmup to 52mm
Thermal (Uw)≤ 0.70.73≤ 0.660.8
Sound (Rw, dB)≈ 50 Rw(dB)≈50 Rw(dB)≈ 48 Rw(dB)≈47 Rw(dB)

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FAQs

Frequently Asked Questions about Kömmerling 88 MD

What does the Passivhaus certificate mean for a homeowner in Spain?

The certificate confirms that the 88 MD system is capable of maintaining heat or coolness inside the home with virtually no external sources (heating or air conditioning). For Spain, this means that even in the hottest weather, a comfortable microclimate will be maintained inside the home, and your electricity costs will be the lowest possible.

Why is 88 mm mounting depth considered the premium class standard?

88 mm allows placing 7 independent air chambers and three seal circuits inside the profile. This thickness creates an insurmountable barrier to external temperature effects. It is the most massive and quiet system in the Kömmerling line, created for projects where no compromises in quality are allowed.

How quiet will the home be after installing the 88 MD system?

When using special soundproofing glazing units, the 88 MD system can reduce noise levels by 50 dB. This allows comfortable living even near a railway, airport, or busy highway. Sounds from the outside world virtually disappear completely, turning your home into a zone of absolute tranquility.

What types of glazing units can be installed in such a wide profile?

The mounting rebate allows installing infill up to 56 mm thick. You can order heavy-duty triple-chamber glazing units with two selective glasses and argon filling. This also allows using thick laminated protective glass (6+6 or 8+8 mm) for maximum security.

What makes this system premium beyond its specifications?

This is a flagship product where every detail is thought through: from improved statics allowing huge sash sizes to exclusive surface finishing options. 88 MD windows look massive, solid, and emphasize the high status of the property, significantly increasing its market value.

How long will such a system last with proper care?

The 88 MD system is designed for an operational life of over 50 years. Thanks to the enormous strength reserve of the profile, reinforced armoring, and protected hardware, the window maintains its functionality and appearance for several generations. This is an investment that pays for itself with decades of impeccable service.