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Engineered Systems NEWSHVAC Engineering SectorsData Center HVAC

‘Green’ Data Centers Have to be Clean Data Centers

Factoring cleanliness into the sustainability equation

By Amy Al-Katib
Liebert indirect evaporative free cooling units

FREE COOLING: Liebert indirect evaporative free cooling units were installed at the Lunavi Data Center in Cheyenne, Wyoming. (Photo Courtesy of Lunavi)

January 27, 2025

As major consumers of energy and water, data centers face increasing scrutiny to demonstrate their commitment to sustainability and environmental responsibility. While many organizations invest heavily in renewable energy and cutting-edge technologies, one vital component is often overlooked: cleanliness. Though this may seem like a minor issue on the surface, accumulated dust and debris can slip through the cracks — literally and figuratively — escalating energy use in both mechanical and IT systems. In fact, particulates as small as half a micron can disrupt equipment, ultimately negating the benefits of other eco-friendly initiatives. This article explores how keeping equipment clean can lead to increased sustainability, cost savings, and improved performance in data centers.

The impact of cleanliness

The International Energy Agency (IEA) reported that in 2020, data centers were responsible for approximately 1% of global electricity demand — a figure expected to rise in the coming years. Cooling systems, which are essential for maintaining optimal operating temperatures for sensitive IT equipment, can account for up to 50% of a data center's total energy usage, exacerbating both carbon emissions and operational costs.

That’s why maintaining clean equipment is no longer just a matter of routine upkeep; it’s a strategic priority. By emphasizing cleanliness, data centers can enhance operational efficiency, reduce energy consumption, mitigate the risk of hardware malfunctions, extend the lifespan of critical infrastructure, and promote healthier work environments. Prioritizing cleanliness also results in significant cost savings, improved performance, and greater resilience, ultimately supporting a greener and more cost-efficient future for the industry.

Efficiency

Dust accumulation on server components can act as an insulator, trapping heat inside the equipment. As temperatures rise, systems may throttle performance to protect themselves or activate cooling mechanisms more aggressively, which in turn, escalates energy consumption. This cycle of overheating and excessive cooling can strain both equipment and energy resources.

The problem is further compounded when air filters become clogged or cooling units accumulate dirt. In such cases, these systems are unable to operate at peak performance levels, reducing their ability to regulate temperature effectively. Regular and thorough cleaning is essential not only to maintain the optimal temperature of IT equipment but also to ensure that cooling systems can function efficiently. By keeping these systems clean, data centers can significantly reduce the need for excess energy input, improving overall energy efficiency while preventing unnecessary wear and tear on equipment. This proactive maintenance approach results in lower operational costs and enhanced system reliability.

Equipment longevity

Extending the lifespan of equipment promotes a more sustainable approach to resource management by reducing the need for constant technology replacements. Instead of continually discarding outdated systems, companies can maximize the potential of their existing infrastructure, decreasing the demand for new manufacturing and mitigating the environmental impact associated with the production and disposal of electronics.

Dust and debris that accumulate on hard drives, circuit boards, and other sensitive components can cause malfunctions or complete failures. By prioritizing cleanliness, organizations not only improve the performance and reliability of their hardware but also significantly extend its life cycle by preventing premature wear and tear. This strategy reduces e-waste, curtails the frequency of replacements, and contributes to a circular economy.

Cost savings

The cost of lost productivity and potential revenue during outages can be substantial. Clean data centers lower energy costs by reducing energy consumption for IT equipment, optimizing cooling system efficiencies, and reducing the likelihood of equipment failures. Over time, these savings add up, creating opportunities to reinvest in additional sustainability initiatives, driving long-term environmental and economic benefits for the organization.

Improved performance

Clean equipment operates more efficiently, which translates to improved performance metrics. This is particularly critical in environments where speed, uptime, and system resilience are nonnegotiable, such as cloud computing and large-scale data processing. In these high-demand settings, even small inefficiencies can result in significant delays or disruptions. By maintaining clean and well-calibrated equipment, organizations ensure that their systems run smoothly, minimizing the risk of performance bottlenecks and enhancing the overall quality of service.

Healthy work environment

The cleanliness of a data center directly impacts the health and productivity of personnel. Dust and allergens can circulate in the air, posing health risks to staff. A clean data center fosters a healthier work environment, which can enhance employee productivity and morale.

Regular maintenance and cleaning can mitigate risks associated with airborne particles, ensuring that the air quality remains high. This is particularly important in environments where employees spend long hours monitoring and maintaining critical systems.

Cleaning best practices

To achieve a sustainable and efficient data center, implementing comprehensive cleaning practices is essential. While the IEEE recommends that data centers conduct a thorough cleaning at least every six months, operational demands and environmental conditions may require more frequent cleanings. Therefore, regular cleaning schedules should be established and tailored to the specific needs of the facility.

Cleaning protocols should encompass all areas of the data center, including not only IT and mechanical equipment but also overhead spaces, ceilings, exterior hardware, and underfloor plenums. Regular cleaning of the ceiling plenum, for example, helps remove airborne particles that can accumulate and affect air quality. Similarly, ensuring that the underfloor plenum remains clean prevents contaminants from being circulated back to sensitive equipment.

Cleaning methods, equipment, and materials must be carefully selected to ensure compatibility with the surfaces and materials within the critical environment while adhering to the standards of ISO 14644-1, Class 8 airborne contamination level. This ensures that cleaning processes do not introduce additional risks or compromise the integrity of sensitive equipment.

Equally important is the use of specialized, environmentally friendly cleaning solutions to effectively remove dirt and dust while minimizing the environmental footprint of the cleaning process. Furthermore, employing HEPA-filtered vacuums, certified to capture even the smallest particles, ensures that cleaning efforts are not only thorough but also precise, maintaining the highest standards of cleanliness and air quality.

Additionally, organizations should focus on proper airflow management to enhance cooling efficiency. By directing airflow through IT equipment rather than around it, data centers can prevent energy loss and ensure that cooling systems operate at peak performance. Efficient airflow management helps eliminate hot air recirculation, reducing the overall energy consumption of the facility.

Incorporating real-time environmental monitoring and automated cleaning solutions can further enhance server maintenance efforts. Technologies that provide continuous monitoring of temperature, pressures, and airflow offer valuable insights and proactive management capabilities. This automation not only improves operational efficiency but also aligns with modern trends in data center management.  The ability to track and analyze these critical metrics over time allows for data-driven correlations to be made between data center cleanliness and overall operational performance. By leveraging this real-time information, organizations can optimize cleaning schedules, anticipate potential issues before they arise, and ensure that all systems are running at their highest efficiency.

Partnering with experts

Engaging expert cleaning services can streamline the process of maintaining cleanliness in data centers. Companies like Data Clean specialize in critical environment cleaning, offering custom solutions that address the unique challenges faced by data centers. Their experience in handling complex environments ensures that cleaning protocols are effective and adhere to industry standards.

Data Clean provides a range of services, including regular maintenance, pre- and post-construction cleaning, and comprehensive solutions for equipment protection. Their trained technicians understand the importance of cleanliness and sustainability, using advanced techniques to enhance the performance of data centers.

Conclusion

As data centers continue to expand and evolve, the importance of cleanliness in supporting sustainability initiatives cannot be overstated. By prioritizing regular cleaning and maintenance, organizations can enhance energy efficiency, extend equipment lifespan, lower operational costs, and create healthier work environments. This commitment not only contributes to the sustainability goals of the organization but also positions data centers as responsible stewards of the environment.

Incorporating effective cleaning practices and partnering with expert services like Data Clean enables organizations to meet sustainability goals while optimizing operational efficiency. By fostering a culture of cleanliness and proactive maintenance, data center operators can ensure that technology becomes a powerful force for good — minimizing its environmental impact while maximizing performance, reliability, and uptime.

Investing in these practices goes beyond simply keeping systems running smoothly; it represents a strategic alignment of operational goals with environmental, social, and governance (ESG) goals. This approach not only supports immediate performance improvements but also ensures long-term success by reducing costs, extending the lifespan of critical equipment, and contributing to a greener future for the industry. By integrating environmental responsibility into everyday operations, data centers can position themselves as leaders in both technological innovation and sustainability.

KEYWORDS: Data Centers and HVACR energy measurement for HVACR heat transfer mechanical service Sustainability and HVACR

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Amy al katib 200

Amy Al-Katib, CDCDP, is a freelance journalist and former editor-in-chief of Mission Critical and Engineered Systems magazines. She is a member of 7x24 Exchange Intl., ASIS Intl., and the International Society of Philosophical Enquiry. She holds a bachelor’s degree in journalism from Michigan State University and a certificate in STEM/computer science from New York University. She is currently a student pilot and is also enrolled in the Masters of Science Cybersecurity program at NYU. Reach her at al-katiba@bnpmedia.com.

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