Company details for:

D+H UK

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Unit 10,
Lawnhurst Trading Estate,
Ashurst Drive,
Stockport,
Greater Manchester,
SK3 0SD,
United Kingdom

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Products / Services

CDM Chain Drives

The CDM series chain drive effortlessly moves heavy roof and façade windows with a push and pull force of 1000 N. Thanks to the clever triple deflection of the chain, its short design makes it the most compact drive in its class. Equipped with Modbus-based ACB technology, it can be flexibly configured according to project requirements using the D+H SCS software.

CDC Chain Drives

CDC window openers are available in 24v and 230v with standard stroke lengths of 350 - 1500mm. The slimline housings and near silent operation make them ideal for integrating into window profiles. The CDC also has the capability to operate large opening vents via synchronised operation of multiple drives on a single vent.

CDP Chain Drives

The powerful CDP chain drives are available in 24v and 230v with standard stroke lengths of 600 − 1500mm and the minimum operating force of 1500N. Synchronised operation of multiple drives or singular drives with twin operation are available.

KA Chain Drives

KA chain drives are available in 24v and 230v with standard stroke lengths of 350 - 1300mm and operating forces of 300N or 500N on single chain drives, this rises to 600N on a twin drive. Synchronised operation of multiple drives can increase these forces if and when required.

VCD Chain Drives

VCD chain drives are available in 24v and 230v with standard stroke lengths of 250 − 350mm. The range includes our most compact window drive. The VCD also has the capability to operate large opening vents via synchronised operation of multiple drives.

For natural day-to-day ventilation purposes only.

DXD Rack & Pinion Drives

DXD rack and pinion drives are available in 24v and 230v with stroke lengths up to 1500mm. A force of up to 3000 N can be provided. The DXD also has the capability to operate larger opening vents via synchronised operation of multiple drives.

ZA Rack & Pinion Drives

ZA rack and pinion drives are available in 24v and 230v with standard stroke lengths of up to 1500mm and opening forces of up to 1500 N. Multiple drives can be synchronised to operate a single window or skylight using BSY+ technology.

NSHEV Rooflight

The NSHEV centre pivot roof window is equipped with the chain drive fitted at the base of the window. The rooflights have a black exterior with natural timber or white polyurethane interior. For pitched roof applications.
EN 12101-2 certified for smoke ventilation.

NSHEV Roof Louvre

The NSHEV Roof Louvre is an economical low profile louvre, designed for both smoke/heat exhaust and natural ventilation applications.
EN 12101-2 certified for smoke ventilation.

NSHEV Dome Vent

The NSHEV dome vent is an ideal solution for smoke ventilation applications on flat roofs. The vent can be installed for smoke extraction in almost all building types. Opening the vent ensures that staircases are kept free from any smoke.
EN 12101-2 certified for smoke ventilation.

NSHEV Smoke Damper

Ideal for corridor requirements, particularly within high-rise buildings

The smoke damper has been designed to satisfy smoke shaft applications and is particularly suited for fire rated mechanical smoke extraction shafts in multi-storey buildings.Tested according to EN 12101-8Comprises of 3 units; damper, removable sleeve and grille

NSHEV Louvres

Ideal for end of corridor requirements, particularly within high-rise buildings.
The aluminium-framed louvres are tested in accordance with EN 12101-2 to provide dual-purpose natural ventilation and smoke ventilation.

NSHEV Smoke Window

Ideal for head of stairs and corridor applications

The windows are made to order to suit openings and free area requirements.They are equipped with a D+H chain drive for operation.

RT 46 Call Point Unit

The RT 46 break glass unit is used to trigger and reset smoke ventilation systems and includes status indication LED’s.

CPS-P Control Panel

Compact SHEV control panel especially for high-current applications

Up to 20 A current consumption per group

Up to 16 SHEV control panels can be interconnected via the main/sub network (not with design CPS-P1-xxx-xxxx-B)

Stabilised output voltage

CPS-M Smoke Control Panel

The fully modular, pre-assembled CPS-M SHEV control panel is our most innovative development project. The bespoke design allows for multiple smoke lines and groups.design

RZN 4503-T Smoke Control Panel

The RZN 4503-T combines a smoke control panel, natural ventilation button and reset button in one housing. With its 3 A output, the most compact control panel from D+H is ideal for stairwells and individual rooms.

PS-VFM1 Natural Ventilation Control

The small central unit for controlled natural ventilation can be operated via push-buttons as well as wind and rain signals. It opens a ventilation group safely while remaining hidden in a deep switch box.

RZN Control Panels

Our versatile RZN-M SHEV modular controllers provide operate window drives with up to 8 A total current. With 2 fire compartments, 3 drive groups and an expansion slot for an additional module, RZNs are highly flexible.

GVL Natural Ventilation Panels

GVL panels are ideal for small applications such as individual rooms and conservatories. With up to five ventilation groups and a possible total current of up to 8A, it is our most powerful version for controlled natural ventilation.

CPS-B Smoke Control Panel

Our extremely compact CPS-B impresses with its intelligent housing design with removable cover and foolproof click assembly. This makes it easy to insert the central board and the additional modules.

WRS-S Wind and Rain Sensor

For automatically closing windows on detection of rain.
Includes mast and wall mounting options.

VRS 10 Rain Sensor

Small detector for automatically closing windows on rain.

Wireless Window Control

Products for opening and closing windows wirelessly.
RCM wireless receivers & RCR remote controls.

LD Chain Drive

The LD features remarkable power. At up to 1800 N, it opens and closes even the heaviest louvre windows quietly and reliably.

Ultra-strong holding force of 1800 N for especially heavy or eccentrically hinged louvre windows

Ideal for small louvres due to short, narrow design

Extremely low operating noise of max. 45 dB(A) for ideal ventilation

About us

Established in 1991, D+H UK (formally known as Dyer Environmental Controls Ltd) are the UK’s leading experts in high-end ventilation solutions. With decades of industry experience, we specialise in providing cutting-edge ventilation technologies that enhance indoor air quality, improve energy efficiency, and ensure life safety across various sectors.

Here at D+H UK, we offer an extensive range of products and solutions that are designed using the latest air ventilation technologies and innovations, such as natural ventilation, natural smoke ventilation, mechanical smoke ventilation, window drives, control systems, NSHEV vents, domelights and louvres.

Our innovative ventilation systems have been integrated into commercial, residential, industrial, healthcare, education, and public sector buildings, delivering exceptional performance in both every day and emergency scenarios. From naturally ventilated office spaces to sophisticated smoke control systems in high-rise buildings, our solutions are designed to create safer, more comfortable, and more sustainable environments.

At D+H UK, we offer a comprehensive range of state-of-the-art products and solutions, including:

Natural Ventilation – Intelligent systems that optimise airflow and indoor climate using automated window controls. These systems provide fresh air circulation, reduce the need for mechanical cooling, and support well-being through improved indoor environments.
Natural Smoke Ventilation – Systems designed to efficiently clear smoke from buildings in case of fire, ensuring safety compliance and enabling safer evacuation routes.
Mechanical Smoke Ventilation – High-performance extraction and pressurisation systems to maintain clear escape routes in complex buildings, such as multi-storey residential or commercial developments.
Window Drives & Control Systems – Advanced automation technology for seamless integration with building management systems, enhancing user control and enabling responsive building performance.
NSHEV Vents, Domelights & Louvres – High-quality components designed for optimal airflow, daylighting, and smoke control, combining functionality with modern architectural aesthetics.

Originally focused on the construction industry, we have since expanded our reach, working with architects, developers, consultants, and facilities managers to deliver tailored solutions that meet the highest standards of safety and efficiency. Our commitment to excellence, reliability, and overall professionalism has earned us a trusted name in the industry.

At D+H UK, we believe in a customer-first approach. We work closely with our clients, providing expert guidance from initial project consultation to system design, installation, and ongoing maintenance. Our dedicated teams ensure smooth project execution and long-term system performance, supported by comprehensive technical assistance and aftercare services.

Above all, our mission is to create safer, healthier, and more energy-efficient environments, ensuring that every building we work on is equipped with the best ventilation solutions available.

We take pride in our ability to combine technical expertise with innocation, offering bespoke systems that align with the evolving demands of modern architecture and sustainability targets. As regulatory requirements become more complex and building standards more rigorous, our team stays ahead of the curve—delivering compliant, future-ready solutions that do not compromise on design or performance.

D+H UK is part of the global D+H Group, which gives us access to a wide network of international expertise and product development. This collaboration strengthens our capabilities and allows us to bring the latest European innovations to the UK market.

Looking forward, D+H UK continues to invest in research, technology, and training to remain at the forefront of the ventilation and smoke control industry. We don’t just install systems, we engineer better environments.