Dyer’s natural ventilation systems use natural pressure to circulate fresh air to create comfortable temperatures. Here at Dyer we strive to improve the environments in which we work, live and learn.

Creating comfortable temperatures and good air quality is a challenge, especially in contemporary buildings. Limited air exchange, thermal loads increased by equipment and extensive glazing are all factors. Dyer’s natural ventilation solutions are able to overcome these issues and make it possible to control the indoor environment with ease.

Our natural ventilation systems provide the optimum solution and puts climate control in the hands of occupants of a building. Dyer have two main product sectors within our solution, the first being manual winding gear, and the second being automatic electrical window/vent drives.

Manual Winding Gear

Dyer’s manual opening system enables a number of high level windows to be operated from one single operator. The chain opens the window via a rotary control handle, which drives a steel helical cable. The cable runs within a nylon lined steel conduit. The conduit can be formed and installed on-site to overcome difficult building contours.


  • Unobtrusive, reliable openers
  • Adjustable lengths, up to 380mm
  • Suited for many window types
  • Quick and versatile on-site install
  • Provide control for individual / multiple openings

Automatic Electrical Window/Vent Opening Systems

Dyer’s automatic electrical window/vent opening systems use intelligent design in tandem with natural pressure differentials to efficiently manage the supply and movement of air in buildings. Our systems are cost effective to install, run and maintain, in environmental terms, they are exceptional.


  • Room temperature and CO2 control
  • Weather station for external monitoring
  • Interface with BMS and/or heating systems
  • Actuators & Drives
  • Remote Control
  • Ventilation switches
  • Interfacing with smoke ventilation systems




- 2 days ago

A selection of our products can be found on @SpecifiedBy - the UK’s leading building product research platform for Architects & Specifiers. Access our products information here -
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- 11 days ago

Natural smoke and heat exhaust ventilators (NSHEVs) clear smoke in the event of a fire to keep escape/emergency routes clear, and provide smoke-free space for fire-fighting. View our range of certified NSHEVs on our site.
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- 17 days ago

Smoke ventilation only protects people and property when in full working order. It is essential to ensure all ventilation systems remain reliable and operate correctly. Contact us on 0161 491 4840 (option 5) or [email protected]
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- 20 days ago

Dyer provided natural and mechanical smoke ventilation systems at the impressive Hotel Brooklyn. The Hotel sits opposite Welford Road Stadium, home to Leicester Tigers rugby team.
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- 26 days ago

@BarbourNews: @DyerEnvironment installed mechanical and natural smoke control systems to assist with means of escape and firefighting operations in emergency fire conditions for Hotel Brooklyn. Find out more here --> #ventilation #firesafety #smokevents
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