top of page

Reducing Data Center Energy Costs: How HVAC Optimization Cuts Carbon Emissions

Learn how data centers can cut energy costs and carbon emissions through HVAC optimization and smarter cooling strategies.

Ava Montini

Jan 28, 2025

Written by 

Published on

Tags

Data centers are the invisible engines driving our digital economy, supporting everything from video streaming to cloud computing and e-commerce. However, they have an enormous energy footprint. In particular, cooling systems—designed to prevent overheating and ensure server performance—are among the most energy-intensive components of these facilities.


By examining the nuances of cooling challenges, the role of HVAC filters, and real-world solutions, let's explore how data centers can significantly reduce energy costs and carbon emissions without compromising performance.



The Energy-Intensive Nature of Cooling in Data Centers

Walk into a typical data center, and you’re greeted by the constant hum of servers, each generating heat as they operate 24/7. Managing this heat load is critical to prevent server failure, downtime, or even catastrophic equipment damage. Yet, cooling systems, while essential, consume a staggering amount of energy.


Why Cooling is So Energy-Intensive


  1. Relentless Operation

    Unlike commercial office buildings or industrial facilities, which have peak and off-peak times, data centers require continuous cooling. The need for uninterrupted service means cooling systems operate at full capacity 365 days a year.


  2. Dense Heat Loads

    Modern servers pack immense computational power into small physical footprints. As server density increases, the amount of heat generated per square foot skyrockets. High-density data center racks can indeed generate heat loads exceeding 30 kW per rack, while traditional systems typically range between 5 to 10 kW per rack. This significant increase in power density presents challenges for cooling and energy efficiency.


  3. Cooling System Inefficiencies

    Many data centers still rely on older HVAC technologies designed for less demanding environments. These systems often lack advanced features like variable-speed drives or intelligent controls, resulting in wasted energy.


  4. Air Distribution Challenges

    Poorly designed airflow management leads to inefficiencies. Hot spots in the server room can force cooling systems to overcompensate, driving up energy use.


The Scale of Energy Use

The average data center consumes between 10 and 50 megawatts of power annually, with cooling alone accounting for 30-40% of this usage. According to the Uptime Institute, cooling inefficiencies represent one of the biggest opportunities for energy savings in data centers.


Filters

The Overlooked Hero of HVAC Efficiency

When it comes to cooling system optimization, much attention is given to technologies like liquid cooling or airflow containment. However, the role of air filters is often underestimated. These small, replaceable components significantly influence how efficiently HVAC systems operate.


How Filters Impact Energy Consumption

Filters are designed to trap particulate matter, dust, and contaminants, ensuring clean air circulates through data centers.


However, not all filters are created equal:

  • High-Resistance Filters: Traditional pleated filters create substantial resistance in airflow, forcing HVAC fans to work harder to push air through the system. This increases energy demand and operating costs.

  • Low-Pressure Drop Filters: Advanced filters with low-pressure drop technology reduce airflow resistance, enabling cooling systems to maintain efficiency while consuming less energy.


The Domino Effect of Poor Filtration

Using inefficient filters doesn’t just waste energy—it creates a ripple effect of operational problems:


  • Increased Wear on Fans and Motors: Higher resistance shortens the lifespan of HVAC components.

  • Hot Spot Risks: Poor airflow management leads to uneven cooling, forcing systems to overwork.

  • Dust Accumulation: Ineffective filters allow particulate matter to settle on server components, increasing the risk of overheating and equipment failure.


Real-World Benefits of Optimized Filters

Implementing advanced filters tailored for data center environments yields measurable benefits that go far beyond energy savings.


1. Energy Savings at Scale

Switching to low-resistance filters can reduce HVAC energy consumption by, on average, 15%, depending on the system's configuration. For large-scale data centers, this translates to savings in the hundreds of thousands annually.


  • Case Study

    A California data center upgraded its filters and saw a 15% reduction in HVAC-related energy use within a year, saving over $75,000 while cutting its carbon emissions by 300 metric tons—equivalent to planting 5,000 trees.


2. Prolonged Equipment Lifespan

Cleaner air leads to less strain on HVAC systems and server components. Advanced filters trap contaminants that would otherwise accumulate on heat exchangers, fans, and server hardware, reducing maintenance costs and prolonging equipment life.


3. Enhanced Cooling Performance

By improving airflow dynamics, optimized filters eliminate hot spots and ensure consistent cooling throughout the facility. This stabilizes operating temperatures, improving server reliability and reducing unplanned downtime.


4. ESG Alignment and Carbon Reduction

As corporations face increasing pressure to meet environmental, social, and governance (ESG) goals, HVAC optimization offers a practical path forward. According to the U.S. Environmental Protection Agency, for every megawatt-hour saved, data centers can reduce their carbon emissions by approximately 0.4 metric tons.


Beyond Filters

A Comprehensive Approach to Cooling Efficiency


While advanced filters are a game-changer, they are most effective when integrated into a broader cooling optimization strategy.


1. Airflow Containment Systems

Hot aisle/cold aisle containment ensures efficient airflow management by separating hot and cold air streams. This reduces the workload on HVAC systems and improves overall energy efficiency.


2. Smart Cooling Controls

AI-driven cooling technologies can monitor temperature, humidity, and airflow in real time, adjusting HVAC performance to meet dynamic needs. Pairing smart systems with advanced filters amplifies efficiency gains.


3. Transitioning to Renewable Energy

Integrating renewable energy sources, such as solar or wind, with efficient cooling systems further reduces a data center’s environmental footprint.


A Vision for Sustainable Data Centers

The story of data centers is one of both opportunity and responsibility. As the backbone of modern technology, these facilities have an obligation to operate sustainably. Advanced air filtration represents a simple yet powerful lever for change, enabling data centers to reduce energy demand, enhance reliability, and align with global climate goals.




Small changes can lead to big results. Advanced filters, though often overlooked, can redefine the energy efficiency of data centers. Coupled with strategic airflow management and cutting-edge technologies, they are key to transforming data centers into models of operational excellence and sustainability.

Humidification vs. Dehumidification: What’s Best for You?

Writer's picture: Jennifer CrowleyJennifer Crowley
Photo of the interior of a window, slick with moisture from humidity
By optimizing the air quality in your indoor environment, dehumidification also enhances the efficacy of your HVAC system, helps preserve your furniture and belongings, and even contributes to energy savings.

Imagine stepping into a room with walls coated in a slick layer of condensation, the air heavy and damp. Not exactly the ideal environment for productivity or relaxation, is it? That’s where the power of dehumidification comes in. Let’s explore the ins and outs of humidification vs. dehumidification, uncovering its benefits, applications, and the science behind it. 


So, whether you’re struggling with a stuffy basement, experiencing mold growth in your home, or simply looking for a more comfortable environment to enjoy your indoor or outdoor exercises, this blog is for you. Dehumidification is the process of removing excess moisture from the air, resulting in a more comfortable and healthier living space. It’s a game-changer in combating musty odors, preventing mold and mildew growth, and reducing the overall humidity level in your home or workplace. But it doesn’t stop there.

By optimizing the air quality in your indoor environment, dehumidification also enhances the efficacy of your HVAC system, helps preserve your furniture and belongings, and even contributes to energy savings. So, if you’re tired of feeling like you’re navigating through a tropical rainforest every time you step inside, grab a cup of your favorite drink, settle in, and join us on this journey of understanding the wonders of dehumidification.


What Is Humidification?

Humidity refers to the amount of moisture or water vapor present in the air. Humidification is the process of increasing the moisture content in the air, often done to achieve a desired level of humidity for various purposes. In this section, we will dive deeper into the world of humidification and explore its different aspects.


1. Understanding Humidity Levels

Humidity levels are typically measured as a percentage and can have a significant impact on our comfort, health, and the environment around us. Different environments require different humidity levels. For example, indoor spaces generally benefit from a relative humidity (RH) of around 40-60% to maintain optimal comfort and prevent issues such as dry skin, static electricity, or damage to wooden furniture.


2. The Importance of Humidification

Humidification plays a crucial role in various industries and applications. In homes, humidifiers are commonly used to alleviate dry air symptoms and create a more comfortable living environment. In healthcare settings, maintaining appropriate humidity levels is essential for patient comfort, preventing the spread of airborne diseases, and preserving sensitive medical equipment. Industries such as printing, textiles, and woodworking also heavily rely on proper humidification to ensure quality production and prevent material damage.


3. Types of Humidification Systems

There are different types of humidification systems available, each with its own benefits and considerations. Some common examples include:


  1. Evaporative Humidifiers These work by evaporating water into the air, increasing humidity levels. They are often used in residential settings due to their simplicity and affordability.

  2. Steam Humidifiers These devices use electricity or gas to heat water, producing steam that is then released into the air. Steam humidifiers are often used in larger-scale applications and industries where precise control of humidity levels is necessary.

  3. Ultrasonic Humidifiers These devices use ultrasonic vibrations to break water into tiny droplets, which are then dispersed into the air. Ultrasonic humidifiers are known for their quiet operation and efficiency.

  4. Central Humidification Systems These systems are integrated into HVAC (heating, ventilation, and air conditioning) systems, allowing for centralized control of humidity levels in large spaces such as office buildings or hospitals.


4. Benefits and Considerations

Humidification can provide several benefits, including:


Improved Comfort

Properly humidified air can alleviate dry skin, throat irritation, and respiratory discomfort.


Health Benefits

Maintaining optimal humidity levels can help reduce the spread of viruses and bacteria, as they thrive less in environments with appropriate moisture levels.


Preserving Materials

Humidification is crucial in industries where materials, such as paper or wood, need to be stored or processed under specific humidity conditions to prevent damage or deterioration. However, it is important to consider certain factors when implementing humidification systems:


Maintenance

Regular maintenance is necessary to keep humidifiers clean and functioning properly, as poorly maintained systems can become breeding grounds for mold and bacteria.


Energy Consumption

Some humidification systems may consume significant amounts of energy, especially steam-based systems, which should be taken into account when considering the overall cost of operation.


Over-humidification

Excessive humidity can lead to issues such as condensation, mold growth, or discomfort. It is essential to monitor and control humidity levels to avoid these problems. Humidification is a critical process that impacts our comfort, health, and various industries. By understanding the different aspects of humidification and choosing the appropriate system, we can create environments that are optimal for our well-being and ensure the longevity of materials and equipment.


What Is Dehumidification?

Image of an interior window, free from moisture
Dehumidification is the process of removing excess moisture from the air, thus reducing humidity levels.

When it comes to creating a comfortable and healthy indoor environment, one often overlooked factor is humidity. Excessive moisture in the air can lead to a variety of problems, including mold growth, musty odours, and damage to furniture and electronics. That’s where dehumidification comes in. In this section, we will explore the importance of dehumidification and how it can help create a more comfortable and healthy living space.


Understanding Humidity

Before we delve into dehumidification, let’s first understand what humidity is. Humidity refers to the amount of moisture present in the air. It can be influenced by factors such as weather conditions, indoor activities like cooking or showering, and even the number of people in a room. The measurement commonly used to describe humidity is relative humidity (RH), which expresses the amount of moisture in the air as a percentage of the maximum amount the air can hold at a given temperature.


The Effects of Excessive Humidity

High humidity levels can have a detrimental impact on both our health and our belongings. Excessive moisture in the air creates an ideal breeding ground for mold and mildew, which can trigger allergies and respiratory problems. It can also cause wood to warp, metal to corrode, and electronic devices to malfunction. High humidity can make a room feel stuffy and uncomfortable, leading to reduced productivity and overall dissatisfaction.


The Benefits of Dehumidification

Dehumidification is the process of removing excess moisture from the air, thus reducing humidity levels. By implementing a dehumidification system, you can reap numerous benefits.

  1. It helps prevent mold growth and inhibits the spread of allergens, making your indoor environment healthier.

  2. Dehumidification helps protect your belongings from damage caused by moisture, prolonging their lifespan. It creates a more comfortable living space by reducing that sticky feeling associated with high humidity.

  3. Dehumidification can even help lower energy costs, as drier air feels cooler, allowing you to set your thermostat at a higher temperature without sacrificing comfort.


Types of Dehumidification Systems

There are different types of dehumidification systems available, each with its own advantages and applications.

  1. Refrigeration dehumidifiers use a cooling coil to condense moisture from the air, similar to how an air conditioner works.

  2. Desiccant dehumidifiers, on the other hand, use a moisture-absorbing material to pull water molecules from the air.

  3. Ventilation systems play a vital role in dehumidification by introducing fresh air from the outside and expelling stale, humid air.

Both systems have their specific use cases, and the choice of which one to use depends on factors such as the climate, the size of the space, and the desired level of dehumidification.


Maintaining the Ideal Humidity Level

To maintain a comfortable and healthy indoor environment, it is important to monitor and control the humidity level. The ideal relative humidity for most homes is between 30% and 50%. Below 30% can lead to dry air, while above 50% can create conditions favourable for mold growth.


Using a hygrometer, which measures relative humidity, you can easily keep track of the Humidification vs. Dehumidification moisture levels in your home and make adjustments as needed. Proper ventilation, the use of exhaust fans in high-humidity areas, and repairing any leaks or water damage can also help in maintaining the ideal humidity level. Dehumidification plays a crucial role in creating a comfortable and healthy indoor environment. By controlling humidity levels, you can prevent mold growth, protect your belongings, and enjoy a more pleasant living space. Whether you choose a refrigeration dehumidifier or a desiccant dehumidifier, implementing a dehumidification system can greatly enhance the overall quality of your indoor environment. So don’t overlook the importance of dehumidification, and start enjoying the benefits today.


Primary Purpose of Humidification and Dehumidification

Photo of a humid tropical forest of palm trees
Humidification and dehumidification are vital in maintaining a comfortable and healthy indoor environment.

When it comes to creating a comfortable and healthy indoor environment, the primary purpose of humidification and dehumidification cannot be underestimated. These two processes play a crucial role in maintaining optimal levels of humidity, which directly impact our comfort and health. So, let’s dive into each of these topics and explore their significance in more detail.


1. The Significance of Humidification

Humidification is the process of adding moisture to the air, increasing its relative humidity. This is particularly important during dry winter months when indoor humidity levels tend to drop, causing discomfort and health issues. By introducing moisture into the air, humidification helps to:


Alleviate Dryness

Dry air can cause various discomforts, such as dry skin, chapped lips, and irritation in the eyes, nose, and throat. Humidification brings moisture back into the air, reducing these symptoms and enhancing overall comfort.


Relieve Respiratory Problems

Dry air can exacerbate respiratory conditions like asthma, allergies, and sinus congestion. By increasing humidity, humidification helps to soothe the airways, reducing coughing, wheezing, and other respiratory discomforts.


Protect Furniture and Electronics

Low humidity levels can cause wood furniture to shrink, warp, or crack. Humidification prevents these issues by maintaining an optimal level of moisture in the air. It also helps to prevent static electricity build-up, which can damage sensitive electronics.


2. The Significance of Dehumidification

Dehumidification, on the other hand, is the process of removing excess moisture from the air, reducing its relative humidity. This is essential in environments where high humidity levels can lead to a host of problems. Dehumidification helps to:


Prevent Mold and Mildew Growth

High humidity creates a breeding ground for mold and mildew, which not only cause unpleasant odors but also pose serious health risks. Dehumidification removes excess moisture, inhibiting the growth of these harmful organisms and promoting a healthier indoor environment.


Improve Indoor Air Quality

Excessive humidity can lead to increased levels of indoor air pollutants, such as dust mites, bacteria, and volatile organic compounds (VOCs). These pollutants can trigger allergies, respiratory problems, and other health issues. Dehumidification helps to control moisture levels, reducing the presence of these pollutants and improving indoor air quality.


Enhance Comfort

High humidity levels can make a space feel muggy, sticky, and uncomfortable. By removing excess moisture from the air, dehumidification creates a more pleasant and comfortable indoor environment. With Humidification vs. Dehumidification, they are both vital processes in maintaining a comfortable and healthy indoor environment. While humidification adds moisture to the air, relieving dryness and enhancing comfort, dehumidification removes excess moisture, preventing the growth of mold and improving indoor air quality. By understanding the importance of these processes, we can create spaces that promote well-being and ensure a pleasant experience for all.


Common Sources of Humidity In Indoor Spaces

Image of a modern home hallway
Understanding the common sources of humidity in indoor spaces and how factors like occupancy, cooking, bathing, and ventilation influence the need for dehumidification systems is vital for maintaining a comfortable and healthy indoor environment.

Indoor spaces can be prone to high levels of humidity, which can lead to a range of problems such as mold growth, musty odours, and damage to furniture and building materials. Understanding the common sources of humidity in indoor spaces, and how factors like occupancy, cooking, bathing, and ventilation influence the need for dehumidification systems, is crucial for maintaining a comfortable and healthy indoor environment.


1. Occupancy and Humidity

The number of people occupying a space can significantly contribute to the overall humidity levels. Each person releases moisture through activities like breathing and perspiration. In small, poorly ventilated spaces with a high occupancy rate, the moisture can quickly build up and create an uncomfortable and potentially unhealthy environment. Dehumidification systems can help remove this excess moisture and maintain a more comfortable indoor climate.


2. Cooking and Humidity

Cooking activities, particularly those that involve boiling or steaming, can release a significant amount of moisture into the air. This moisture can result in elevated humidity levels, especially in kitchens that lack proper ventilation. Not only can high humidity make the space uncomfortable, but it can also lead to the growth of mold and mildew. Dehumidification systems can effectively remove the excess moisture and prevent these issues.


3. Bathing and Humidity

Bathing and showering produce a substantial amount of moisture, contributing to high humidity levels in bathrooms. Inadequate ventilation can exacerbate the problem, as the moisture becomes trapped in the space. High humidity in bathrooms can lead to mold growth, peeling paint, and damage to fixtures and fittings. Dehumidification systems designed specifically for bathrooms can help control the moisture levels and maintain a healthier environment.


4. Ventilation and Humidity

Proper ventilation is essential for controlling indoor humidity. Without adequate airflow, moisture becomes trapped and can lead to the growth of mold and mildew. Ventilation systems, such as exhaust fans or open windows, help remove excess moisture and improve air circulation. However, in some cases, ventilation alone may not be sufficient to control high humidity levels. Dehumidification systems can provide an extra layer of moisture control, ensuring a more comfortable and healthier indoor environment. Understanding the common sources of humidity in indoor spaces and how factors like occupancy, cooking, bathing, and ventilation influence the need for dehumidification systems is vital for maintaining a comfortable and healthy indoor environment. By addressing these sources of moisture with appropriate dehumidification solutions, individuals can create a space that promotes well-being and prevents potential issues associated with high humidity levels.


How Humidification and Dehumidification Contribute to Energy Efficiency

Female hands adding a drop of scented oil to her hands
When the air is adequately humidified, it can retain heat more effectively, reducing the need for additional heating.

The Effects of Humidification vs. Dehumidification Systems on Energy Efficiency


From an energy efficiency perspective, humidification systems can indirectly contribute to reduced energy consumption. When the air is adequately humidified, it can retain heat more effectively, reducing the need for additional heating. This means that in winter, homeowners and businesses can set their thermostats to lower temperatures without sacrificing comfort. Consequently, this can lead to energy savings and lower heating bills.


How Humidity Affects Health

Image of a mans hands holding a thermostat
By controlling humidity levels, dehumidification systems help to mitigate the growth of harmful pollutants, creating a healthier and safer indoor environment.

Humidification and dehumidification systems not only improve energy efficiency but also have a direct impact on indoor air quality. Maintaining appropriate humidity levels is crucial for ensuring a healthy and comfortable environment for occupants.


Benefits Respiratory Health

Humidification systems help to combat dry air, which can have detrimental effects on respiratory health. Dry air can cause irritation of the nasal passages, throat, and eyes, leading to discomfort, coughing, and even an increased risk of respiratory infections. By adding moisture to the air, humidification systems alleviate these issues, promoting better indoor air quality and overall well-being.


Combatting Allergens and Mould

Similarly, dehumidification systems significantly contribute to improving indoor air quality by reducing excess moisture. High humidity creates an ideal environment for mould, bacteria, and other allergens to thrive. These contaminants can trigger allergies, respiratory problems, and even exacerbate asthma symptoms. By controlling humidity levels, dehumidification systems help to mitigate the growth of these harmful pollutants, creating a healthier and safer indoor environment.


Airborne Virus Control

Both humidification and dehumidification systems can help minimize the spread of airborne viruses. In environments with appropriate humidity levels, respiratory droplets containing viruses and bacteria tend to fall to the ground more quickly, reducing the risk of transmission. This is particularly important in commercial settings where large numbers of people gather, such as offices, schools, and healthcare facilities.

Explore expert insights, stay up to date with industry events, and gain a deeper understanding of the cutting-edge developments that are revolutionizing the indoor air quality landscape within Blade Air's comprehensive Insights Hub.

You can also subscribe to our monthly newsletter below for exclusive early access to Blade's Insights content, uncovering tomorrow's air quality advancements before they hit our Hub.

Insights Hub

Lorem ipsum dolor sit amet, consec tetur adipiscing elit. Sit quis auctor 

Lorem ipsum dolor sit amet cotetur 

Lorem ipsum dolor sit amet, consec tetur adipiscing elit. Sit quis auctor 

Lorem ipsum dolor sit amet cotetur 

Lorem ipsum dolor sit amet, consec tetur adipiscing elit. Sit quis auctor 

Lorem ipsum dolor sit amet cotetur