Hybrid Window Systems is a specialist manufacturer of high performance hybrid windows and door systems, that combine the best attributes of aluminium and PVCu, including Passivhaus options. The result is a range of design-led products for the discerning homeowner, detailed architect and forward-thinking building specifier…


Like our name suggests, Hybrid Window Systems is all about hybrid windows and glazing products, utilising the key features of each material and putting them together to offer an incredible range of products. This is in terms of visual appeal, along with outstanding performance and it’s for good reason that we have chosen KÖMMERLING as our product systems partner.

We can offer hybrid windows and doors with enhanced weather ratings and with incredible levels of thermal efficiency including Passivhaus levels of performance in windows, residential doors and the latest ‘in vogue’ large span PremiDoor lift and slide patio doors. Aluminium is a firm favourite with architects and so we use this as our external material, offering literally hundreds of different finishes, while PVCu is used for its unrivalled thermal efficiency and sound reduction properties to the inside, with a variety of internal finishing options.

With a newly commissioned  hybrid windows manufacturing facility just outside Worcester, we can manage shorter lead times, ensure the upmost in product quality and also provide full specifier support, including CAD drawings and site visits. Hybrid glazing systems are now becoming increasingly adopted, so why not let us become your partner of choice?


Using the proven KÖMMERLING System 76 platform, AluClip Pro is a tilt and turn window solution that benefits from a unique flush external aluminium section that also offers impressive levels of additional structural rigidity. This enables the achievement of large glazing configurations with a relatively shallow glazing depth of 76mm.

AluClip Pro benefits from a Uf value of 1.2 W/(m2K) as standard in the double seal variant with glazing options up to 48mm. External finishes include powder coating, painting and anodising for an architectural feel, while the internal face can benefit from several life like woodgrain options, flat white or even the latest pioneering proCoverTec surface finish technology.

Other technical advancements include the option of pre-foamed proEnergyTec profiles which brings product performance up to Uw value of 0.69 W/(m2K), defined under the ift guideline WA-15/2 for Passivhaus applications.


There’s been an increase in demand in recent years for Passivhaus applications in general and certainly for more cost-effective options. The System 76 platform from renowned PVCu system engineers, KÖMMERLING, has enabled us to bring to the UK market a number of product variants that can achieve this standard of Uw value of 0.80 W/(m2K).

AluClip Pro has already proven popular in Europe, while the latest AluClip Zero variants in the form of the Elegance, Flush and View also provide added design choice for Passivhaus applications. Additionally, we can also offer a hybrid residential door solution and a large span lift and slide PremiDoor patio door. 

The aluminium in these systems is not only there as an exterior feature for building designers and architects, but also to add considerable extra dimensional stability. We have experience with Passivhaus projects, so why not allow us to become your product design partner?


The lift and slide PremiDoor 76 sets new standards for performance in patio doors in terms of weathering ratings, energy efficiency and with an ability to span 6.5m wide x 2.6m high with just two sashes, thanks to clever product design and unique German hardware.

Like our window and residential door products, this is also a hybrid solution with an external clip on aluminium section. As well as a two-pane variant we can also accommodate three and four pane variants. With building specifiers and architects looking to maximise light in building projects, this door system is a must for both homes, apartments and commercial projects.

Other design features include a new Lux variant with offers incredibly slim sightlines in the fixed pane, while Passivhaus standards of performance with a UD value of 0.76 W/(m2K) can also be achieved.


Unit 15c Topbarn Business Centre
Worcester Road
Holt Heath


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