Ventilation manufacturer Nuaire, based in Caerphilly, highlighted national Clean Air Day with an air quality interactive workshop with a local primary school.

Volunteers from Nuaire also planted an Air Quality Garden at Cwrt Rawlin school and participated in a ‘green’ journey to work, leaving the car at home.

Air pollution harms the health of millions, leading to respiratory problems which are particularly detrimental to children and impact on their lung function growth. According to a recent World Health Organisation report, 44 UK cities have air too toxic to breathe safely.

Caerphilly is home to Wales' most polluted road, the A472 at Hafodyrynys, where levels of nitrogen dioxide are higher than anywhere but central London.

Clean Air Day is a chance to find out more about air pollution, share information with friends and colleagues, and help make the air cleaner and healthier for everyone.

As part of Clean Air Day, Nuaire pre-launched the very first whole-house ventilation system with a powerful carbon filter designed to remove 99.5 per cent of nitrogen dioxide and other harmful pollutants – the Noxmaster.

On the same day, the company hosted a class of 30 Year Three children from Cwrt Rawlin Primary School in Caerphilly.

The workshop at the school featured presentations and scientific experiments looking at indoor air quality, how to reduce air pollutants in the home including positive input ventilation, and a cyclone ball game with teams challenged to remove the most ‘NOX particle’ balls.

A factory tour was included, showing Nuaire’s world class manufacturing facilities.

Nuaire staff were impressed by the level of knowledge the children already possessed on air pollution and the intelligent questions they asked.

With more than 400 staff based in Caerphilly, Nuaire is a large employer for South Wales and as has been at the forefront of the ventilation industry since 1966, providing a full range of energy-efficient domestic, commercial and renewable ventilation solutions.

The Noxmaster is Nuaire’s latest product launch and, unlike many indoor air pollution technologies, is aimed at existing homes rather than new build. A retrofit product, the Noxmaster is a whole-house ventilation system which, for the first time, combines a powerful carbon filter with a strategy invented by Nuaire more than 45 years ago: Positive Input Ventilation.

This combination claims to remove up to 99.5 per cent of nitrogen dioxide and other harmful pollutants generated by traffic emissions and industrial processes. The Noxmaster delivers clean, filtered air into urban homes, improving the indoor air quality to within safe levels, as recommended by the WHO.

Nuaire is currently running a test with Noxmaster at Hafodyrynys on the most polluted street in Wales. A controlled test house has been monitored for a number of months to show the difference between the pollution levels at the roadside, the pollution levels in a typical property, and the greatly reduced NOX levels with the Noxmaster installed. Test results are likely to be available in early August.