Air Quality


Why Air Quality Tech Should Be Top Of The Smart Building Agenda


By Tony Parkinson, Sector Director of Hard Services at OCS


Good ventilation is no longer just a nice-to-have. In fact, the quality of the air we breathe indoors has become a central concern, particularly following the pandemic. This isn’t just a health and wellbeing concern, but also in terms of energy use and building performance. As more organisations embrace smart building technologies, air ventilation sensors are emerging as a practical, data-led solution. But despite their benefits, uptake has been slower than expected. So, what’s holding decision-makers back – and what needs to change?


Rethinking Indoor Air Quality


The pandemic placed a renewed spotlight on indoor air quality, with ventilation emerging as one of the most effective ways to


reduce airborne transmission of COVID-19 and other


respiratory illnesses. In the age of smart buildings, this has added another layer of relevance. Buildings equipped with connected systems now have the ability to adapt to real-time changes in occupancy, temperature and air quality – but not all are using these capabilities to their full potential.


Air ventilation sensors are one of the smartest additions to a building’s infrastructure, helping facilities teams track carbon dioxide (CO2


) levels, adjust airflow, and maintain healthier


environments. Yet despite their clear advantages, many building operators remain hesitant to implement them. Understanding – and addressing – this reluctance is key to realising their potential.


Making The Case For Better Ventilation


Smart buildings are already proving their value when it comes to energy use, automation and occupant wellbeing. At OCS, systems like ABi integrate footfall counters, utility meters and environmental sensors to give facilities managers a clear, real-time view of how spaces are used – and how they could work better. Ventilation sensors build on this, offering a way to track air quality continuously and make data-driven decisions to improve it. In practical terms, these sensors monitor CO2 levels and can automatically trigger changes in airflow to keep air fresh. That’s not only vital for occupant health – reducing fatigue, improving focus and minimising the spread of airborne pollutants – but also for sustainability. Traditional HVAC systems often run unnecessarily, wasting energy. By contrast, sensors enable ventilation to be demand-led, cutting energy use without compromising comfort.


Crucially, the data generated can also be used to plan maintenance, flag issues early and support compliance. For example, filter changes in HVAC units can be timed according to actual usage rather than fixed schedules, improving both performance and cost efficiency.


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But there are answers. In buildings with high occupancy or energy use, the return on investment can be swift – especially when factoring


in rising energy costs. Phased rollouts or


financing options can help ease the financial burden, while energy efficiency grants or incentives may also be available.


Meanwhile, concerns around maintenance and security can be mitigated by working with experienced providers who offer regular calibration, remote diagnostics and data protection compliance. For some organisations, in-house training to manage basic upkeep is a cost-effective alternative.


The role of ventilation


building performance. As


smart building


A Technology With Wider Relevance in occupant wellbeing


isn’t limited


to offices or schools. From healthcare settings to prisons, improving indoor air quality can have far-reaching effects – not just on health, but on morale,


safety and long-term technology continues to mature, air


ventilation sensors will play an increasingly important role in creating responsive, efficient, and healthier environments. The challenge now lies in making the benefits more widely understood – and in helping building operators make the leap from awareness to action.


Overcoming Resistance


So why the hesitation? Unsurprisingly, cost remains the biggest sticking point. Retrofitting existing systems or installing new ones can carry a significant upfront price tag – and many building owners are cautious about whether the long-term savings will justify the investment.


Technical complexity is another concern. Some worry about compatibility with legacy systems or the need for specialist knowledge to maintain sensor networks. Others raise valid questions about data security, particularly around how building and occupant data is handled and stored.


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