5 Most Common Aerospace Cleanroom Construction FAQs

5 Most Common Aerospace Cleanroom Construction FAQs

Cleanroom construction can be complex, and involves a lot of planning, questioning, and thought. Here are 5 common questions about cleanroom construction, answered. For any others, reach out to your local cleanroom experts!


How much space does an aerospace cleanroom take up?



The size of your aerospace cleanroom matters, so it’s always best to work with an experienced cleanroom designer to develop the ideal cleanroom to meet your desired footprint. Aerospace cleanrooms will need as much space as it takes to comfortably contain your equipment, personnel, and cleanroom systems, but they shouldn’t be built bigger than necessary, as this creates more air that needs to be filtered and controlled, increasing energy expenditures and costs for your business.

If you are concerned you don’t have enough space to build your new cleanroom, know that some cleanroom types, like SoftWall cleanrooms, are ideal in condensed spaces. Their flexible, lightweight construction means they can be put almost anywhere, and easily expanded, reconfigured, or picked up and transported to a new location if your project needs change.



Can I build a cleanroom in my existing building?



You absolutely can, as long as the space meets your cleanroom size and height requirements and is accessible for cleanroom construction. 

Cleanrooms can be built in a wide range of spaces, and will take up as much or little space as your project needs demand. They can be designed to be freestanding, connected to existing walls, or suspended from a reinforced ceiling grid, so where you install your cleanroom is up to you.

Cleanrooms built in existing structures might be able to integrate with the building’s own HVAC system or use light from existing windows. Talk to your cleanroom designer about how your unique space could align with the needs of your cleanroom.



How long does cleanroom construction take?



Cleanroom construction times vary depending on the size of your facility and the customizations you need to make your cleanroom design a success. However, building a cleanroom using modular cleanroom panels can reduce this time significantly.

Also, some cleanroom types, such as SoftWall cleanrooms, may only take a day or two to complete, where a HardWall aerospace cleanroom that needs to meet an ISO Class 5 or lower classification may take longer to design and install. Your cleanroom design expert can help you understand how long the total cleanroom construction will take, depending on the specifications of your project.

Cleanroom Construction Process


The majority of the time building a cleanroom is spent planning and designing the cleanroom to meet your project needs. Considering your aerospace cleanroom classification and other requirements specific to your application, a cleanroom designer will create a comprehensive plan for your new cleanroom, considering the ideal layout, airflow pattern, and combination of materials that will offer the best performance over its lifetime. 

Once the cleanroom design is complete, the modular cleanroom panels are fabricated and delivered to your site. Your cleanroom can be assembled with detailed instructions or with the help of an experienced installation crew to set up your cleanroom so it’s ready to operate. 



What components do I need in my aerospace cleanroom?



Every aerospace cleanroom will look a bit different, depending on the work that you do. Typically, however, most cleanrooms contain the same basic components: cleanroom wall panels, a cleanroom HVAC system, and the filtration system. You’ll also have things like lighting, windows and pass throughs, flooring, and furniture, but the main three deserve the most attention.


Aerospace Cleanroom Wall Panels


The modular cleanroom panels that make up the structure of your aerospace cleanroom do more than just define the space. They are also customized and outfitted with wiring, insulation, and any other features that your application demands. Modular cleanroom panels cut the cleanroom construction down considerably, and allow you to have a specialized facility designed uniquely for your work.


Aerospace Cleanroom HVAC


Any top performing aerospace cleanroom will need a powerful cleanroom HVAC system to move and treat air within the controlled environment. Depending on your aerospace cleanroom classification and other industry-specific requirements, you may have very strict standards to reach for air temperature, humidity, and pressure. The cleanroom HVAC system is responsible for keeping your employees comfortable and their work safe.


Aerospace Cleanroom Filtration


Proper cleanroom filtration is vital to achieving optimal control over the air quality within your cleanroom, and essential for reaching stringent cleanroom classifications. You’ll likely address filtration by installing powerful filter/fan units, or FFUs, in the ceiling grid of your aerospace cleanroom. Combined with an expertly designed airflow pattern, your cleanroom filtration system should be more than capable of removing large numbers of particles of various sizes from the air. With many, many air changes per hour, you can reach the acceptable particle count designated by your ISO Class.

Beyond those, you’ll need to account for your industry-specific equipment, personnel, and ample space for both to move around. If you work with oversized components, make sure to include plenty of space in your cleanroom design for things to be maneuvered without creating more obstacles in your cleanroom. Non standard ceiling heights, as well as oversized windows and doors can help you accommodate everything you need, safe and sound.



How clean does my aerospace cleanroom need to be?



Understanding cleanroom classifications can be complicated. The International Standards Organization publishes documents that define the levels of cleanliness required for different Classes of cleanrooms, 1-9, where Class 1 is the cleanest possible environment and Class 9 is equivalent to room air. Many aerospace cleanrooms are at a minimum ISO 14644-1 Class 7. Your aerospace cleanroom classifications will vary depending on your application and could include other industry-specific standards, such as ASTM International or NASA.

Depending on your Class standards, your aerospace cleanroom will need to achieve a certain level of cleanliness defined by particle count, air changes, and ceiling coverage. To help you design a cleanroom that meets all your requirements, talk to an expert cleanroom designer.

Have more questions about designing and building a cleanroom for your space? Give the experts at Angstrom Technology a call! We’d be happy to walk through your specific requirements and help you get the best cleanroom installed in your space.

Understanding Aerospace & Defense Cleanroom Classifications

Understanding Aerospace & Defense Cleanroom Classifications

Aerospace & Defense cleanroom classifications regulate a cleanroom’s degree of cleanliness and are defined by the allowed amount of contamination by particle count and size, as well as the necessary air change rates depending on the cleanroom’s classification level. Aerospace and defense cleanrooms are typically regulated by the classification standards of two major organizations: The International Standards Organization (ISO) and the American Society for Testing and Materials (ASTM).

ISO Cleanroom Classifications for Aerospace and Defense Cleanrooms

The International Standards Organization developed the set of standards by which all cleanroom industries and applications must follow. ISO 14644-1 outlines the requirements for all cleanroom environments.

ISO 14644-1

ISO 14644-1 describes cleanroom cleanliness levels in terms of Classes 1-9, where Class 9 is equivalent to the cleanliness of room air and Class 1 represents the cleanest possible cleanroom environment. As the classification number falls, cleanrooms must comply with stricter standards to reach a cleaner, more controlled environment. The majority of aerospace and defense cleanrooms fall within ISO Classes 7-8, although some sensitive applications, such as the development of microchips or sensors may be governed by stricter classifications.

Understanding ISO Aerospace Cleanroom Classifications

ISO 14644-1 outlines cleanliness standards for aerospace and defense cleanrooms by determining the allowed contamination levels in each ISO class in terms of air particle size and count, air change rates or airflow velocity, and percentage of ceiling coverage for filtration. 

  • Particle Count: Particle count refers to the number of particles of a certain size per cubic meter. Stricter ISO classes allow fewer particles, and also restrict the size of those particles. 
  • Air Change Rate: The air change rate at is how quickly air is removed, filtered, and replaced within your cleanroom. 
  • Ceiling Coverage: Ceiling coverage refers to the percentage of ceiling coverage for HEPA filter/fan units, or FFUs. 

Understanding the way these elements affect the cleanliness of your facility is the key to designing a successful cleanroom.

ASTM Standards for Aerospace & Defense Cleanrooms

American Society for Testing and Materials (ASTM) has also developed a set of International Standards, which test the cleanroom’s ability to limit contamination through the restriction of allowed particles in the cleanroom environment. They also deal with the more technical aspects of aerospace and defense applications, including the cleanroom’s ability to control mechanical, thermal, chemical, and electrical properties within the controlled environment.

Aerospace cleanrooms must comply with ASTM relevant to their application and use of materials. This could include regulation for the handling and disposal of combustible fuels, static control systems, and even processes for parts manufacturing. More extreme standards apply for highly sensitive applications, where airborne particle concentrations must be strictly controlled such as in the development of spacecraft hardware, fine electronics, or optical devices.

Blending Aerospace Cleanroom Classification Standards

Some aerospace and defense cleanrooms must be able to comply with different classifications for the different tasks or projects, or different stages within the same project, such as from manufacturing to assembly to packaging. 

Aerospace and defense cleanrooms need to be able to adapt to the circumstances of your work, and have everything necessary to evolve with project requirements and keep products and workers safe. This includes highly specific control over environmental factors and filtration needs, monitoring equipment to maintain strict particle count and temperature ranges, and proper solutions for supporting or storing equipment to effectively utilize the facility’s space.

Aerospace and Defense Cleanroom Design

Aerospace and defense cleanrooms require active filtration and complete control over temperature and humidity, as well as other environmental factors. The cleanroom design should address the three main areas of concern to reach strict aerospace cleanroom classifications:

  • Particle count: Aerospace cleanroom design should include a special airflow pattern that makes use of filters in the most efficient and effective way possible to trap and remove particles, and replace the air in the room with air that is fresh and contaminant-free.
  • Air change rate: While less stringent aerospace and defense applications may only require an air change rate of 5-48, defense cleanrooms with strict air quality standards may require hundreds of air changes per hour. In these cases, it’s expressed as air velocity, because air is constantly moving as it’s filtered out and replaced.
  • Ceiling coverage: The more stringent your aerospace cleanroom classifications, the higher percentage of ceiling coverage required to filter air properly. Ceiling fan coverage is closely related to air change rate, as more FFUs are necessary to complete more air changes.

Modular Cleanroom Design for Aerospace and Defense Cleanrooms

Modular cleanrooms are ideal for the aerospace and defense industries — particularly applications with changing requirements as they can meet the needs of customized spaces, including those with oversized equipment and products. The two main types of cleanrooms used for aerospace and defense applications are HardWall cleanrooms and RigidWall cleanrooms.

  • HardWall cleanrooms are the most common type of cleanroom used in aerospace and defense applications, as they offer a high level of control over environmental factors, so they can easily reach with the strictest aerospace cleanroom classifications. 
  • RigidWall cleanrooms can also provide a suitable environment for aerospace and defense applications and can reach a variety of aerospace cleanroom classifications. They consist of clear panels that can easily be reconfigured as you need to make changes to the layout of your cleanroom, and offer many customization options.

Aerospace and defense cleanroom design should also include a powerful HVAC system as well as cleanroom lighting that integrates seamlessly with modular panels and facilitates proper airflow velocity. Additional features and cleanroom supplies can be added to customize the cleanroom to specific applications. Some of these additions might include air showers, a fire suppression system, laminar flow systems, and industry-specific equipment and furniture.

Aerospace cleanroom classification requirements can be complicated and difficult to reach without the right cleanroom design. When it comes to aerospace cleanroom design, you can trust Angstrom Technology to design, build, and install the best cleanroom for your unique application and classification. To get started, reach out to our professional design team today.

Redesigning Your Aerospace Cleanroom

Redesigning Your Aerospace Cleanroom

A new project means new requirements, new equipment, and maybe even new staff and higher stakes. If you need to redesign your aerospace cleanroom to meet the needs of a new project, you want to make sure to make the necessary changes thoroughly and efficiently so you’ll be ready to start the next endeavor off on the right foot. Let’s go over what you need to know when redesigning your aerospace cleanroom.

Aerospace Cleanroom Redesign Process

Before you start tearing into your cleanroom redesign, it’s important to start the process on paper. This means you need to make a plan for how your new cleanroom will operate, and then lay out the steps to get there. To do this, you’ll start with your cleanroom classification to figure out what’s needed, adjust the space to fit your new requirements, and make sure your systems can support the changes.

Consult Your Cleanroom Classification

Looking at your cleanroom classification, see if your new project requires more control over the environment than it currently has. If your new project is more sensitive to risks of contamination, requires more space to fit larger equipment or products, or more control to protect the safety of your workers, a cleanroom redesign is necessary. 

When consulting your new cleanroom classification, specifically look at the areas of particle count, air changes, and ceiling coverage as it relates to your ISO class number. If you need to meet new classification requirements, these are the main areas you’ll need to address. Keep in mind that if your cleanroom is changing size or layout, your airflow pattern will need to be adjusted accordingly in order to make sure all of the air is being filtered and replaced efficiently in your redesigned cleanroom.

Plan Your Cleanroom Redesign Needs

Once you have a basic roadmap of the changes you need to make to your cleanroom, take a look at your current space. Do you have enough room for your new project materials, products, personnel, and equipment? Does the cleanroom need to be reconfigured for a more efficient layout, or do you need a new cleanroom entirely? These are great questions to answer in the planning stage of your cleanroom redesign, as you don’t want to get halfway through the process to realize your current setup isn’t working. 

When addressing your space requirements, remember that too much space could also be an issue. If your cleanroom is too large for your new project needs, you’ll still be using the same amount of energy to heat, filter, and light the space. Downsizing or condensing your cleanroom can help cut operational costs — impressing your investors — and reducing the space you’ll need to keep clean.

Upgrade Your Cleanroom Systems

To handle increased air changes or filtration demands, your systems may also need to change to reach new requirements. For example, if your cleanroom is increasing its air change rate, you may need to increase the percentage of ceiling coverage by adding more filter/fan units. If your new project will be more sensitive to temperature or humidity changes, you may need to upgrade to a more powerful HVAC system for greater environmental control. 

Keep in mind that, since all the systems within your cleanroom work together, a change to one system will likely mean an adjustment for another. For example, increasing your filter/fan units may take up space that your cleanroom lighting used to occupy, so you’ll need to look for a new lighting solution that works around your filtration system.

Cleanroom redesign is also a good time to check in on your equipment and systems for service and upgrades. Since the cleanroom won’t be in operation for a short time, it’s a good idea to get cleanroom maintenance tasks out of the way during this window.

Customizing Your Aerospace Cleanroom Redesign

Once your cleanroom redesign addresses the essential functions of your new cleanroom, you can begin to customize it with other items. These are the things specific to your new project that will make it a success, which could include:

  • Cleanroom furniture including workstations, tables, and storage solutions
  • Pass through chambers and gowning rooms
  • Extra systems like fire suppression or static control
  • Additional environmental monitoring controls 

Your cleanroom redesign should cover the basic needs of your new project, such as meeting your new cleanroom classification, but also allow you to meet the new demands with a more efficient layout, upgraded systems and additional features. A successful aerospace cleanroom redesign will plan out all the changes first, and implement them efficiently so you can adapt to the changes seamlessly and hit the ground running with your new project.

Need to resize or reconfigure your aerospace cleanroom? Angstrom Technology has you covered. Our professional cleanroom designers can help assess your needs and space requirements to find the ideal layout and air flow pattern for your application. We also can help upgrade your HVAC and filtration systems to match your new cleanroom redesign. Get in touch with us today to get started.

Aerospace Cleanroom Design Tips: Finding the Right Lighting

Aerospace Cleanroom Design Tips: Finding the Right Lighting

Lighting is a critical part of cleanroom design. This system allows employees to properly view what they’re working on, improves the efficiency of your cleanroom operations, and can even help identify contaminants to help keep your cleanroom clean. Which cleanroom lighting is best for your application? Let’s explore your options to help you decide.

How to Choose Cleanroom Lighting

You’ll want to choose cleanroom lighting that is as illuminating as it is simple to maintain and clean. Additionally, consider the way your lights are mounted and how they work with your overall cleanroom design to help you reach your cleanroom classification. The cleanroom lighting you choose must be highly efficient and contaminant-free. The fixtures and any mounting mechanisms must be able to be cleaned effectively and ensure no contaminants can enter the cleanroom.

LED Cleanroom Lighting

LED lighting is known to be more durable and longer-lasting, require less maintenance, and use less energy than incandescent lighting. Plus, LEDs are extremely bright, which is a useful quality for aerospace cleanrooms where a lot of illumination is needed.

Cleanroom Lighting: Useful Measurements to Know

When choosing cleanroom lighting, you’ll need to understand how lights differ by comparing their measurements. Here are a few useful measurements to know:

Watts: measures how much energy is required to power the light

Foot-candles: measure the distance light reaches, by square feet

Lux: measure the intensity of light produced, as interpreted by the human eye

Lumens: measure light output

Depending on the use of light in your cleanroom, you will use these measurements differently. For example, if work in your aerospace cleanroom is task oriented and needs light to focus on small parts, you’ll require brighter, more intense lighting that allows significant illumination of the work area without causing employees to strain their eyes. Conversely, work over a broader area that isn’t detail-focused will need to prioritize area coverage, but not necessarily intensity.

Mounting Cleanroom Lighting

How lighting is mounted is another important part of choosing the right fixtures for your cleanroom. When comparing lighting systems, consider how much space the lighting system will occupy on the ceiling, a factor that is especially important when ceiling space must also be shared with filtration and fan units.

The way your cleanroom lighting is mounted will also determine how you access it to perform service such as replacing bulbs, fixing wiring, or cleaning the fixtures. Lighting can be mounted so that it is accessible from inside the cleanroom, but keep in mind this means all servicing of lights will interfere with cleanroom processes. Lights can also be installed from above. The advantage of this is that accessing lights does not mean as much of an interruption for the room below, and keeps contaminants from entering from the lighting space. However, this option requires more space above the ceiling for access.

Types of Cleanroom Lighting

Each aerospace cleanroom will have specific lighting needs and varying amounts of available ceiling space. Because of this, there are many different types of cleanroom lights to choose from. Here are a few common types of cleanroom lighting:

Flat Panels 

Flat panels are mounted flush with the ceiling. They provide a lot of light and are easy to clean. Because of their wide panel design, this cleanroom lighting type requires more ceiling space compared to other options, which makes it less than ideal for cleanrooms with stringent filtration requirements.

Teardrop Lighting

More stringent cleanroom classifications prioritize ceiling space for fan units and filters. Lighting, therefore, is a secondary concern and must work around the filtration system. 

Teardrop lighting extends below the ceiling to allow for precious ceiling space to be used for filtration. The teardrop shape allows an uninterrupted flow of air around the lighting without creating turbulence. The disadvantage of teardrop lighting is that it takes up valuable headspace within the cleanroom environment.

LED Lighting Grid

Batten lighting, or lighting strips, are linear LED lighting which is integrated with the ceiling grid system. This allows adequate space for fan/filter units around filters. Wiring for the lights is also built into the grid system so it provides consistent light throughout space without taking up a lot of room on the ceiling.

Recessed Lighting 

Recessed lighting units sit in the ceiling on a gasket to create an airtight seal. While they leave plenty of headroom, recessed lighting requires extreme care when servicing to ensure no contaminants are trapped when light is accessed. In cleanrooms with extremely stringent requirements, recessed lights and filtration can be combined in singular units for ultimate space-saving capabilities.

Expert Cleanroom Design and Lighting Help

An expert cleanroom designer will make choosing cleanroom lighting easier. They can work with you and your specific application to determine which types of lighting and mounting options will best complement your design needs. An cleanroom expert can:

  • Help decide which lighting can be used to perform different tasks in your cleanroom — specific to your application and workers’ needs.
  • Help design lighting to fit around other features of your cleanroom design, including filtration and mounted equipment.
  • Allocate control panels where they are accessible and convenient for staff.
  • Choose energy-efficient lighting fixtures that will maximize productivity while minimizing operational costs.

Cleanroom lighting is an essential part of your cleanroom design and should work with all the other elements to make a high functioning cleanroom for your application. If you’re still unsure which lighting option is best for you, talk to a cleanroom design expert about your concerns and specific project requirements.

Need a little help designing your cleanroom? Call the experts at Angstrom Technology. From lighting to flooring, we can help you make the best choices for your budget and your application. 

HardWall vs. RigidWall Aerospace Cleanrooms

HardWall vs. RigidWall Aerospace Cleanrooms

When it comes to the high stakes of the aerospace industry, the type of cleanroom you choose matters. Your cleanroom structure defines the layout of your space and determines the level of control you can achieve over environmental factors like temperature, humidity, static, and pressure — and therefore whether you’re able to meet your cleanroom classification. It could also mean the difference for product safety, project flexibility, energy efficiency, and manageable operating costs. 

In short, your cleanroom structure is, well, everything. 

For aerospace cleanrooms, the level of control needed can be met with a HardWall or RigidWall cleanroom. While both may reach the cleanroom classification your application requires, there are differences between the two cleanroom types that could make one a better choice for you.

HardWall vs. Rigidwall Aerospace Cleanrooms

The decision between HardWall vs. RigidWall cleanrooms boils down to a few main aspects. The first and most critical aspect is how well the cleanroom can comply with the required classification. If you can’t comfortably meet this fundamental requirement, it could sacrifice your entire project. Secondly, you should also consider the adaptability of the cleanroom design to meet your industry’s needs, including specific requirements for your application, such as the equipment you’re using and other special features that are important to you. Finally, we have to compare how well the cleanroom holds up over time — not only considering its strength and durability but also how it can grow with you as your work evolves.

In aerospace cleanrooms, all of these aspects are important to a successful operation. Let’s take a closer look at HardWall vs. RigidWall aerospace cleanrooms to determine which is the best fit for your application. 

HardWall Cleanrooms

HardWall cleanrooms are made of prefabricated, modular panels. Depending on your application’s unique requirements and your cleanroom classification, your HardWall cleanroom design will include everything you need to get your project up and running.

HardWall Cleanroom Classifications

HardWall cleanrooms can comply with any cleanroom classification, even the most stringent possible standards of ISO Class 1. This cleanroom type can achieve extreme environmental control beyond particle count and air changes. In addition to management of temperature, static, and humidity, HardWall cleanrooms can be pressurized for extra contaminant protection. This cleanroom type will be able to meet the needs of any aerospace application.

HardWall Cleanroom Design

HardWall cleanrooms can be freestanding or incorporated into an existing building structure. Made using a coated aluminum frame with a prefabricated panel, HardWall modular cleanroom panels are constructed with high-quality materials to ensure control over contaminants while not introducing any contaminants themselves. They can be also installed around mounted equipment, use light from your building’s windows, and can even connect to an existing HVAC system. This feature of adaptability is especially useful in aerospace cleanrooms where oversize elements can limit design options. In addition, the modular cleanroom panels are fully modifiable to meet your application’s specific needs and requirements.

HardWall Cleanroom Durability

Heavy-duty HardWall cleanroom panels are built to last. Because they’re modular, HardWall cleanrooms can be rearranged, expanded, or condensed as your project needs change. Modifying, reconfiguring, or reusing your HardWall panels will not sacrifice their quality. They will continue to perform to your classification requirements with little maintenance required beyond your regular cleaning protocols.

RigidWall Cleanrooms

Unlike the utilitarian HardWall panels, RigidWalls are sleek and minimalist. Flat, clear panels allow easier monitoring of the cleanroom while also creating an attractive frame to show off your work to investors.

RigidWall Cleanroom Classifications

While RigidWall cleanrooms are able to meet the needs of many cleanrooms, they’re best suited for those with ISO Class 5-8 standards.

RigidWall Cleanroom Design

With your choice of acrylic, static-dissipative PVC, or polycarbonate wall panels, a RigidWall cleanroom will house your operations in a transparent, attractive style. RigidWall panels can be customized in size with heights up to 7-14 feet, and come pre-wired with outlets and switches to control lighting, fans, and equipment.

RigidWall Cleanroom Durability

RigidWall cleanrooms have a durability comparable to HardWall cleanrooms, and can offer slightly more flexibility and layout options. RigidWalls can be modified with some effort, or easily stored if you need to free space for something else. Panels are suspended from a strong ceiling grid which, when fully-secured, means the panels will maintain their shape and integrity over time. However, due to their minimalist design, they have fewer available features than HardWall panels.

If you’re still unsure whether a Hardwall vs. Rigidwall cleanroom is best for your aerospace application, talk to an expert. Taking a close look at your cleanroom classification and your facility’s requirements, an experienced cleanroom designer can help create the ideal space for your application, complete with everything you need to make your work a success.

Looking for a top-quality HardWall or RigidWall cleanroom for your aerospace application? Talk to a cleanroom design expert at Angstrom Technology.  Our RigidWall and HardWall modular cleanrooms are high-performance cleanrooms that give you full control over your environment. Angstrom Technology cleanroom design experts can work with you and your cleanroom requirements to design the best modular cleanroom for your work. 

3 Benefits of Positive Pressure Cleanrooms for Aerospace and Defense Industries

3 Benefits of Positive Pressure Cleanrooms for Aerospace and Defense Industries

Pressurized cleanrooms are used in a range of industries and applications. Varying levels of pressure determines the way air naturally moves in a space. High and low pressure, or positive and negative pressure, can be used as a tool in cleanroom environments to protect against entering contaminants (in positive pressure cleanrooms) or contaminant leakage (in negative pressure cleanrooms). 

We’re going to focus on positive pressure cleanrooms, how they work, and the benefits they offer to aerospace and defense cleanrooms


What are Positive Pressure Cleanrooms?


Positive pressure cleanrooms have greater air pressure in the cleanroom than the outside environment. In a positive pressure cleanroom, clean, filtered air is consistently pumped into the room through the HEPA filtration and cleanroom HVAC system. In the event that a door or window was opened in the cleanroom, air would rush out into the outside environment. 

This positive pressure ensures that in the event of a breach or leak in the cleanroom, the products and processes within the cleanroom are protected. Because the cleanroom has positive pressure, the air is forced out of the cleanroom, preventing contaminated or unfiltered air from seeping in. 

Positive pressure cleanrooms are most commonly used in applications where the cleanliness of the air within the cleanroom is more important than the air quality outside the cleanrooms. For highly technical applications like microelectronics, aerospace, and defense, where the tiniest particle can damage the quality of the manufactured product, a positive pressure cleanroom affords a number of benefits. 


3 Benefits of Positive Pressure Cleanrooms for Aerospace and Defense Industries


Positive pressure cleanrooms are beneficial to a wide range of applications. For microelectronics, they afford the cleanliness standard required to minimize damages to electronic components like microchips. For hospital and healthcare applications, positive pressure cleanrooms provide the controlled environment healthcare professionals need to keep patients safe. 

But outside these common applications, positive pressure cleanrooms also provide a wealth of benefits for other industries. Let’s look at three benefits of positive pressure cleanrooms for aerospace and defense industries:


#1 Maintain Cleanroom Classification


One of the key benefits of a positive pressure cleanroom for aerospace and defense industries is the cleanroom’s ability to maintain its classification. Because clean, filtered air is constantly being pumped into the cleanroom, it’s very difficult for contaminants or particles to enter. Particles must work against the flow of air to enter a positive pressure cleanroom, which helps to keep your cleanroom at its required classification. This ensures your cleanroom is able to regulate itself with ease, with minimal maintenance or upkeep from your staff. 


#2 Keep Out Debris and Particles


For aerospace and defense cleanroom applications, debris and particulate can be exceptionally damaging. When you’re working to manufacture sensitive products like microchips, defense products, aircraft, or even spacecraft, the smallest particle can affect the quality of the manufactured product. 

Positive pressure cleanrooms work to assist aerospace and defense applications by making it very difficult for debris and particles to enter the cleanroom. Even when an employee is entering a cleanroom or opening a pass-through, the positive pressure of the cleanroom forces the excess air in the room out, minimizing the potential for contaminated air or particulate to enter the cleanroom. This is particularly useful in research and manufacturing applications where a highly controlled environment is key to the success of the project or process. 


#3 Protect Sensitive Work


Many aerospace and defense applications deal with sensitive electronics and sensors and navigation system calibration. This type of work requires a well-controlled environment. Even the smallest particle can disrupt sensitive navigation systems or compromise the quality of a sensor or microchip. 

For aerospace and defense applications like this, a positive pressure cleanroom provides the necessary level of protection from contaminants. A positive pressure cleanroom is first developed to meet the application’s classification standards, and provides an extra level of protection thanks to the nature of positive pressure. 

In addition to meeting cleanroom classifications, the positive pressure cleanroom makes it much more difficult for debris and particulate to enter the cleanroom, protecting even the most sensitive aerospace and defense research, calibration, and manufacturing processes. 


Positive Pressure Cleanrooms Benefit a Variety of Aerospace and Defense Applications


Positive pressure cleanrooms are the ideal choice for a variety of aerospace and defense applications. From electronics and microchip manufacturing to aircraft and spacecraft production to navigation system calibration, there are a number of processes that can benefit from the extremely controlled environment a positive pressure cleanroom provides. 

Is a positive pressure cleanroom right for your application? Let the Angstrom Technology team know. We design, manufacture, and install cleanrooms for custom applications in the aerospace and defense industry and beyond. If you’re looking for a cleanroom that fits your unique application and cleanroom classification, we can help. Give us a call at 888-768-6900 or contact us online today for more information.