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Waterloo’s new displacement ventilation range reduces carbon emissions and energy costs

WAP DistributionWaterloo’s new range of air terminal devices maximises the benefits of displacement ventilation to provide indoor air quality control that reduces energy costs and cut carbon emissions.

Displacement ventilation uses the natural thermal convection of warm air to deliver ventilation and comfort and is a more energy efficient and quieter alternative to conventional overhead systems.

“Displacement ventilation offers a cost-effective solution for producing and maintaining draught free indoor air quality,” says Rick Edmondson, Chairman at Waterloo Air Products plc.

Depending on the application, a well designed system can significantly reduce energy costs, and address the clean-tech agenda by exploiting fresh-air based ‘free-cooling’ for a large proportion of the year.


“Displacement ventilation has been used very successfully in northern Europe for more than 30 years. End users are driving the demand for more natural and energy efficient air distribution solutions in a bid to cut their emissions, displacement ventilation addresses the criteria and has come of age,” adds Rick.

The addition of displacement ventilation technology to Waterloo’s product range also provides customers with a more integrated solution to meet their air distribution requirements and complements the company’s range of chilled beams and air distribution units.

Included in the range are recessed, semi-recessed, floor, wall and corner units to suit a variety of applications whilst offering customers flexibility in their design.

Constructed from galvanised steel or stainless steel (specific products) each unit integrates seamlessly into any installation whilst offering excellent performance characteristics and aesthetically pleasing profiles.


A displacement system works optimally in environments such as theatres, conference rooms, restaurants where there are both high heat loads and high contaminant loads from occupants. Gravity pulls the fresh air supplied near the floor down to the ground where it spreads across the room until it comes into contact with a heat source.

The cool air then rises as it collects heat from the occupants and other heat sources, pushing warm stale air towards the ceiling where it is exhausted via extract grilles. This vertical air flow also makes it less likely that contaminants will spread horizontally across the room. This provides effective ventilation and cooling as fresh air is delivered directly into the occupied zone.


For those applications which require high levels of hygiene, Waterloo has designed wall mounted and free standing units based on a module system that can be built to the required level of hygiene. The design incorporates rigid framework, fully welded corners and a minimum of flanges and edges to minimise collection of dirt.


  • Lower installed cooling capacity
  • Longer period for use of free cooling
  • Improved air quality in occupied zones
  • Draught free air supply
  • Little or no maintenance
  • Energy efficient