Air quality in a building used to be something that many managers hardly considered. You ran your HVAC, changed the filters when you got around to it, and that was good enough. But things have changed dramatically. With a new-found awareness of airborne contaminants and employees who can tell when the air feels “off,” air quality has become a focus like never before – and it’s not due to complaints from the masses.
Fortunately, many commercial facilities have found effective means of achieving better air quality without completely reinventing their HVAC systems or blowing their maintenance budgets out of the water. Some efforts are surprisingly simple while others take a bit more strategic planning.
Filtration That Actually Suits the Building
This is where many buildings get it wrong. They either cheap out on something that doesn’t suit their systems’ needs, or they go too far by installing hospital-grade filtration that their systems can’t handle in the first place. Neither option does anyone any good.
The smarter buildings have figured out how to match filter specifications to what is actually occurring within a space. An office building does not require the same setup as a manufacturing facility. A retail space is not the same as a medical clinic, for example. It sounds simple but you’d be surprised how many facilities still use the wrong filters for their needs.
It starts with knowing what you’re filtering. Large particles/dust? Any filter gets those. Smaller particles – the ones that genuinely impact how people feel and breathe – require more investment. Subsequently, more facilities are finding better opportunities to improve air quality without suffocating the system.
Filter technology is getting better too. Higher efficiency can be had without being impeded by massive airflow limitations – something that historically existed in higher-rated filters. And finally, buildings are paying attention to replacement schedules, which is more important than most realize. A premium filter that stays in place six months too long is worse than a mid-grade filter replaced on time.
Ventilation That Suits How Spaces Are Actually Used
This should be a no-brainer, however plenty of systems operate through ventilation levels relying on occupancy estimates from decades past. Office arrangements are transformed by open floor plans creating different density patterns that debunk prior estimates. Remote work allows fewer people to be present in the building on any given day.
The smarter facility managers find ventilation adjustments that reflect reality. Demand-controlled systems include CO2 sensors that pick up where fresh air intake either needs to increase or decrease, depending on occupancy realities. Empty conference room? The system calms down. Packed meeting? It increases automatically.
Even without fancy new capabilities, buildings can improve ventilation through better scheduling. Running systems harder at peak times when the building is full and turning it down during off hours when no one is there saves energy and keeps air fresh during peak operation when air quality is most needed.
Focusing on Where Systems Fail
Every HVAC system has Achilles heels. Leaky ductwork allows unfiltered air to bypass the entirety of the filtration system. Dirty coils turn to breeding grounds for mold. Mixing boxes and VAV terminals get dust which eventually emerges into occupied spaces.
Buildings with notable improvements are those which get ahead of the problem. Duct inspections allow leaks to be sealed. Coils get cleaned as scheduled instead of waited until they’re filthy. And air conditioner filter screen components fit nicely without holes for air to slip through without getting filtered.
This is less about expensive new equipment and more about maintenance discipline and knowing where to look. Thermal imaging devices make it relatively easy to find leaks now; borescopes allow technicians to see inside ductwork without tearing everything apart. These things help spot concerns before they become building-wide air quality considerations.
Knowing What’s Going On
You cannot fix what you don’t measure. More commercial buildings are serious about reporting – not just temperature and humidity, but particle counts, VOC readings, and CO2 levels.
Monitoring systems have become less expensive and easier to implement. Zone controllers have small sensors in them that do not require pricey wired networks all over the building, either. Instead, it’s good data for facility managers who want to see patterns and get ahead of issues before they become worse.
Time is key here to look at trends. One reading shows nothing, but consistent monitoring over weeks reveals patterns – whether it’s air quality dropping every Monday AM (because the system was in setback mode all weekend) or certain zones consistently reporting higher particle levels (meaning filtration or duct work isn’t doing its job). That’s the data that’s worth using for making decisions.
Proactive Solutions
The best programs all have one theme in common: they’re proactive. Buildings aren’t waiting for complaints; they’re maintaining as scheduled, assessing performance, fixing smaller issues before they develop into bigger ones.
This takes some upfront planning and budget allocation but pays off later down the road. Scheduled filter changes will always beat an emergency request/replacement. Regular coil cleaning beats systems that degrade and become costly repairs later on down the line.
Building automation systems help here significantly; they monitor runtime hours, observe pressure drops across filters and report when maintenance is required. Some even order replacement filters as needed when terminals indicate they’ve almost run out of life.
Making It Part of Building Management
Buildings that achieve sustained improvements over time do not treat air quality like a project with a beginning and end. Instead, they build it into daily operations. Maintenance teams learn best practices; facility managers take air quality observations into consideration regularly; budgets include designated line items for air quality maintenance instead of an afterthought.
This is important because air quality is not something you fix one time and forget about it forever; it needs constant ongoing consideration with adjustments made as the building and its use changes over time. The facilities doing this well make it standard operating procedure – not a special initiative when management loses interest elsewhere.
Commercial buildings do not need perfect air – they need consistently decent air – and that’s achievable through proper filtration, smart ventilation, systematic maintenance and paying attention to the details that most overlook. The buildings getting it right aren’t necessarily spending more money – they’re spending it more wisely with resources allocated in places that genuinely make a difference for those working inside.
