How to Choose the Right Air Filter for Your Data Center

Your data center operates in a high-stakes environment where even minor disruptions can lead to failures and downtime. You need air filters that are up to the task. A well-designed, multi-stage data center air filtration system captures fine particles to protect your equipment from environmental hazards. 

Here are five things to consider when purchasing air filters for data centers. 

5 Steps to Finding the Right Data Center Filtration System

1. Your data center's layout

The layout of your facility plays a key role in determining the accessibility and efficiency of your air filtration system.

If your air handling units (AHUs) and rooftop units (RTUs) are on your roof, consider how you will transport replacement air filters. Carrying heavy or bulky filter skids from your loading dock to the rooftop is time-consuming and labor-intensive. Opt for lightweight filters that come in multiples per box, so you don't need to make as many trips.

If your filters are at ground level, accessibility can still be a challenge. Some units may be in hard-to-reach areas, making changeouts difficult and time-consuming. Filters with extended service lives and high dust-holding capacity can reduce your risks and replacement frequency.

A "bag-and-tag" service can also simplify your air  filter management. Air Filters Inc. will organize and tag your filter boxes so you can see, at a glance, where they go. They can label boxes for your AHU, RTU, or fan room so your team can quickly identify filters and send them to the right location—saving time and reducing the risk of installation errors.

2. Data center location

Your data center’s geographical location has a massive impact on your filtration requirements. The wrong air  filters can leave your equipment vulnerable to humidity, moisture, temperature variations, static electricity, and corrosion. When unaddressed, these issues can threaten your data center's operations.

If your facility is in a dry region, dust can clog your filters, restrict airflow, and strain your HVAC system. The more dust in your area, the more frequently you must change your filters. Air Filters Inc. offers products with a high dust-holding capacity to minimize changeouts.

Does your region get lots of rain, snow, or humidity? If so, your filters may collapse and block critical airflow through your equipment—causing unexpected downtime. You can reduce these risks with filters made with moisture- and corrosion-resistant materials. They prevent water absorption to ensure continuous airflow to your critical equipment.

3. Your customization needs

Data centers aren't one-size-fits-all—and neither are filters. Air Filters Inc. customizes your filters to meet your exact specifications and performance standards. Here's what to look for:

Application

Will your filters go in fresh air intakes, air handling units (AHUs), rooftop units (RTUs), or chillers? These systems have unique airflow requirements, and your filters should be optimized for your application to help boost efficiencies and protect your equipment.

Particle filtration efficiency

Partner with us to find filters that meet your desired MERV ratings or other efficiency metrics while ensuring compatibility with your HVAC system. Air Filters Inc. helps data center managers to find products such as MERV 8, 10, 11, 13, 14, and 16 filters. 

Filter dimensions

Standard filter sizes won't fit every data center's HVAC or duct system. If needed, Air Filters Inc. can manufacture filters in custom sizes to ensure a proper fit and optimal performance.

Product media

Low-pressure-drop media minimizes airflow resistance, allowing air to move more efficiently. This can help you extend filter life and reduce energy consumption, leading to significant cost savings. Also, look for air filter media that doesn't shed fibers or particles, which could contaminate your downstream filters and equipment.

Dust-holding capacity

If your data center struggles with high particulate levels, Air Filters Inc. offers media that traps dust without clogging. The more dust your filters hold, the less frequently you'll need to replace them.

4. Your long-term total cost of ownership (TCO)

Many data center facilities choose the lowest-priced air filters they can find. But saving a few dollars upfront can lead to higher expenses in the long term.

Lower-quality air filters degrade faster, requiring more frequent changeouts and maintenance. With data centers using anywhere from 500 to 24,000 air filters annually, maintenance can become overwhelming quickly.

If you're short-staffed, you might delay maintenance and changeouts, but this can lead to problems down the road. Old filters force HVAC fans to work harder, increasing your energy consumption and costs. Inefficient filters can also let in particles that damage your equipment.

Higher-quality filters may cost more initially, but they last longer and require fewer changeouts. Reducing replacements from twice to once per year can cut data center air filter purchasing costs in half while lowering your labor and maintenance time by 50%.

Air Filters Inc. can put you on a regular changeout schedule and take care of everything for you. That way, you can maximize airflow, extend your equipment's lifespan, and keep your energy costs in check—all while freeing up your team to focus on other critical tasks.

5. Your data center sustainability goals

Data centers have massive cooling demands and are under pressure to reduce energy and water consumption. A mid-sized data center uses 300,000 gallons of water per day—the same amount used by 1,000 homes.

But cooling strategies vary, and each requires the right air filter combo to optimize efficiency and minimize energy consumption:

Water-based cooling (cooling towers):

If filters don't capture outdoor particles, contaminants can enter the water basin. Then, they will require more chemical treatments, strainer cleanings, and costly water changeouts. This can increase data center operational costs, water consumption, and chemical waste.

Fresh air cooling (outside louvers):

Systems that rely on fresh air intakes must filter out dust, debris, and corrosive particles to maintain consistent airflow. Without proper filtration, buildup on heat exchange surfaces can force fans and cooling equipment to work harder, which may lead to higher energy consumption and increased maintenance needs.

Chiller-based cooling (condenser coils):

Airborne contaminants that accumulate on condenser coils can reduce heat exchange efficiency, make chillers work harder, and increase energy consumption.

What to Look for When Choosing Sustainable Air Filters for Data Centers

Each cooling strategy comes with unique challenges, but the right air filters can help you achieve your sustainability goals.

Filters with long lifespans

The longer you keep your filters, the less garbage you produce. Look for filters with extended service lives to reduce waste while cutting your purchasing and disposal costs.

Filters with lower pressure drops

Low pressure drops mean better airflow, allowing your air handling units to consume less energy while maintaining proper ventilation and cooling performance.

Washable air filters

Washable air filters can be a game-changer for sustainability and cost savings. Instead of constantly buying new filters, you can clean and reuse polypropylene or metal filters multiple times—reducing your waste and costs.

Air filters made from recyclable or biodegradable materials

Some filter manufacturers offer recycling programs to help reduce landfill waste. Ask your supplier if they provide recyclable or biodegradable filters to support your sustainability efforts.

Filters that meet sustainability certifications

To ensure your air filtration choices align with your environmental goals, look for products that comply with industry sustainability standards, such as:

• ASHRAE Building Decarbonization Initiatives

• ENERGY STAR® or similar energy efficiency labels

• ISO 14001-certified manufacturers (Environmental Management System)

Find a Partner Specializing in Data Center Air Filtration Solutions

At Air Filters Inc., we have proudly manufactured high-quality air filters and frames for over 70 years, earning the trust of diverse clients across multiple industries. Our customers include financial institutions, cloud computing providers, governmental research organizations, and on-premises data centers for global enterprises. With decades of air filter expertise, we understand the critical need for reliable filtration solutions in protecting your data centers from airborne contaminants that can damage equipment and cause costly downtime.

When server downtime is simply not an option, you can count on Air Filters Inc. to deliver superior air filtration products designed to protect your electrical equipment and machines. Whether you're running large-scale operations or managing sensitive research environments, we offer a full inventory of advanced replacement filters to fit your needs. Explore our product lineup today or contact us to secure the dependable filtration your data center deserves.