American Cleanroom Systems® — Master FAQ Page

A: We design, manufacture, and install modular cleanrooms for the industries where contamination control is not optional: pharmaceutical, biotech, medical device, electronics, aerospace, and government research. Founded in 1976, every phase of a project is handled by our own team, from design and engineering through manufacturing, installation, testing, and cleanroom certification. With 500+ cleanrooms built and over 150 years of combined team expertise, our cleanroom services span a wide range of project types, sizes, and regulatory requirements.

A: We have been building cleanrooms since 1976, giving us 49+ years of hands-on experience and a depth of knowledge that comes only from decades of continuous practice. Our team carries over 150 years of combined cleanroom expertise across architecture, electrical engineering, and biochemistry. We were building cleanrooms before most of our competitors existed, and that accumulated knowledge shapes every project we take on. The commitment behind it is simple and unchanged since day one: build the best modular cleanrooms, in a short period of time, and at a reasonable price — as described by our president on the about us page.

A: Our headquarters and manufacturing facility are in California, and we serve clients nationwide across all markets and states. We are a licensed cleanroom contractor in California, Washington, Arizona, and Iowa. Our manufacturing and installation teams operate as a single integrated unit, which means consistent quality control from the factory floor to final certification, regardless of where your project is located.

A: Over 49 years we have built cleanrooms for some of the most recognized organizations in the world, including Apple, NASA/JPL, Johnson & Johnson, and Intel. Our full client roster spans pharmaceutical companies like Medtronic, Regeneron Pharmaceutical, Allergan, and Roche Diagnostics; defense and aerospace companies like Boeing, Lockheed Martin, and Raytheon; and national laboratories including Lawrence Livermore, Los Alamos, Brookhaven, and NIST. Our gallery of completed projects shows the full range and scale of our work.

A: Yes, we are a licensed cleanroom contractor in California, Washington, Arizona, and Iowa. We maintain our own in-house cleanroom installation team, which means we do not rely on third-party subcontractors to complete your project. Every installation is performed by the same team that manufactured your cleanroom, giving you a single point of accountability from design through certification.

A: Our team holds a LEED Green Associate certification, and we are a member of the US Green Building Council, reflecting our commitment to sustainable cleanroom design. We are active members of the International Society for Pharmaceutical Engineering (ISPE) and the Institute of Environmental Sciences and Technology (IEST), and our staff present regularly at industry conferences including events in Del Mar, Anaheim, and at Apple's headquarters. Staff credentials span architecture, electrical engineering, and biochemistry, and all of our cleanrooms are designed to conform with ISO 14644-1 and FED STD 209E classification standards.

You have options when it comes to cleanroom manufacturers. The questions here get into what makes us different, whether we are the right fit for your project size, how fast you can get a quote, and what Made in USA manufacturing means in practice.

A: Few cleanroom companies can match 49+ years of cleanroom-only expertise, a 48-hour quote commitment, and a client roster that includes Apple, NASA, Johnson & Johnson, and Intel. Unlike general modular building companies that treat cleanrooms as one product line among many, contamination control is all we do — which means deeper knowledge, fewer errors, and a team that understands what is actually at stake in your facility. Our customer testimonials and completed project portfolio reflect the consistency that brings clients back to us project after project.

A: With 500+ modular cleanrooms built nationwide since 1976, we manufacture every unit at our California facility under direct quality control. Our systems are built to ISO 14644-1 and FED STD 209E standards, with design, cleanroom manufacturing, installation, and certification all handled by the same team. That single-source accountability is what separates us from companies that assemble cleanrooms from outsourced components and subcontracted labor.

A: Projects of every size are welcome. A startup biotech company needing a 200 sq ft research room gets the same attention as a pharmaceutical manufacturer commissioning a multi-room cGMP facility. Our complete cleanroom systems scale to meet the requirement, and standard-size rooms are available as cleanrooms for sale for faster delivery on common configurations. Getting a quote takes 48 hours regardless of project scope.

A: Quotes are ready within 48 hours of receiving your project details. Visit our request a quote page and share your requirements, including ISO classification, approximate square footage, and intended application. Our team will get back to you fast with a quote built around your specific needs, not a generic price list.

A: Every cleanroom we build is manufactured at our California facility under direct quality control — not assembled from components sourced from third-party suppliers. Our cleanroom manufacturing process gives us full oversight at every stage of production, from raw materials through final assembly. Made in USA manufacturing means no cross-border logistics, no subcontractor dependencies, and no handoffs that compromise quality.

Cleanroom terminology can be confusing, and choosing the wrong construction type or classification early in a project is one of the most common and costly mistakes buyers make. The questions here sort out softwall vs. hardwall vs. hybrid construction, explain ISO Class 5 through ISO Class 8, and clear up the relationship between current ISO 14644-1 standards and the older Federal Standard 209E designations still in wide use.

A: Our product range covers modular hardwall cleanrooms, softwall cleanrooms, hybrid cleanrooms, and complete pre-configured cleanroom systems across ISO Class 5 through ISO Class 8. Modular systems are the most popular choice for pharmaceutical, medical device, and electronics clients who need a controlled environment that is fast to install, reconfigurable, and more cost-effective than conventional construction. Single-room configurations, multi-room facilities with airlocks and gowning rooms, and everything between are part of our standard project scope.

A: A modular cleanroom uses prefabricated wall, ceiling, and HVAC components that are manufactured off-site and assembled on location, delivering faster installation and greater long-term flexibility than a conventionally built room. The performance, cost, and schedule differences are laid out in detail on our modular cleanrooms vs. standard construction page, and the eight reasons to choose a modular cleanroom guide gets into the practical advantages for regulated manufacturing environments. For most applications, modular construction delivers equivalent performance at a fraction of the schedule and cost.

A: A softwall cleanroom uses flexible vinyl curtain walls suspended from a ceiling grid, making it a lower-cost, faster-to-deploy option suitable for ISO Class 6 through ISO Class 8 applications. A hardwall cleanroom uses rigid wall panels and is the better choice for tighter classifications, higher structural requirements, or applications that need stricter environmental controls. Our page comparing modular and softwall cleanroom systems can help you determine which construction type best fits your process requirements and budget.

A: A hybrid cleanroom combines hardwall and softwall construction techniques in a single facility, typically using rigid walls for the primary cleanroom envelope and flexible curtains for lower-classification adjacent spaces like gowning rooms. Hybrid construction is a practical choice when you need an ISO 5 or ISO 6 core environment with ISO 7 or ISO 8 support spaces, reducing cost without compromising the classification where it matters most. We have delivered numerous hybrid cleanroom projects across pharmaceutical, medical device, and research applications.

A: We build cleanrooms to ISO Class 5, ISO Class 6, ISO Class 7, and ISO Class 8, which correspond to the Federal Standard 209E designations of Class 100 through Class 100,000. Particle count limits, typical applications, and HVAC requirements for each classification are covered in detail on our cleanroom classifications page. If you are unsure which classification your process requires, our team can help you determine the right environment based on your application and regulatory obligations.

A: ISO 14644-1 is the current international standard for cleanroom classification, and Federal Standard 209E is the older US standard that was officially cancelled in 2001 but is still widely referenced in industry. Our guide to ISO 14644-1 vs. FED STD 209E and other cleanroom classification standards maps the two systems side by side: ISO Class 5 equals Class 100, ISO Class 6 equals Class 1,000, ISO Class 7 equals Class 10,000, and ISO Class 8 equals Class 100,000. We design and certify to both sets of standards, so you can use whichever terminology your specifications require.

We have been building cleanrooms for pharmaceutical, medical device, electronics, national laboratory, and industrial clients since 1976. The questions here confirm the specific industries, applications, and regulatory environments we work in, and point you to the relevant project experience behind each answer.

A: Sterile manufacturing, aseptic filling, oral solid dosage, and general drug production are among the most common cGMP pharmaceutical cleanroom projects we deliver. Our pharmaceutical cleanroom designs meet FDA, cGMP, and ISO 14644-1 requirements, and our team has decades of direct experience working with regulated life sciences manufacturers. The long-term trust of clients like Johnson & Johnson, Regeneron Pharmaceutical, Allergan, and Baxter speaks to what we deliver in a regulated environment.

A: Device assembly, packaging, and sterilization environments are a core part of our work, and our medical device cleanrooms are built to ISO Class 5 through ISO Class 8 to meet FDA controlled environment requirements. Many of our medical device clients also require USP 797 and USP 800 compliant environments for compounding pharmacy applications, which we design and build to specification. Our medical device work spans implantable devices, diagnostics, surgical instruments, and consumables for clients across the United States.

A: Biotech and life sciences is one of our core markets, serving companies that need controlled environments for cell culture, fermentation, fill-and-finish, and research and development. Whether the client is an early-stage company building its first cGMP room or an established manufacturer adding capacity, our pharmaceutical cleanroom and cGMP cleanroom capabilities cover the full scope. Clients on our completed projects list include Regeneron Pharmaceutical, Roche Diagnostics, Allergan, and Baxter, among others.

A: Electronics manufacturers have specific contamination and ESD requirements that general cleanroom builders often underestimate. Our semiconductor cleanrooms and static dissipative cleanroom environments are designed for ISO Class 5 through ISO Class 8 facilities requiring ESD controls, amber lighting for lithography, and ultra-low particle counts for wafer fabrication. Our experience with ESD environment considerations for cleanrooms covers PCB manufacturing, semiconductor testing, and precision electronics assembly, with Intel among the technology clients who have trusted us for their most demanding manufacturing processes.

A: National laboratory and government work is a well-established part of our project history, with cleanrooms delivered for NASA/JPL, Los Alamos National Laboratory, Lawrence Livermore National Laboratory, Brookhaven National Laboratory, NIST, Oak Ridge National Laboratory, and Sandia National Laboratories. These projects frequently require metal-free environments, tight temperature and humidity control, and specialized integration requirements, all of which our team handles with regularity. Our national laboratory cleanrooms page and clients page have dedicated sections for many of our government partners.

A: Beyond pharmaceutical, medical device, and electronics, our cleanrooms serve nutraceutical manufacturing, food production, aerospace, CBD and cannabis extraction, e-liquid manufacturing, and laser applications. We have also delivered high-bay cleanrooms for large-scale industrial applications, as well as compact specialty rooms for research institutions, university labs, and defense contractors. If your process requires contamination control, we have likely built a cleanroom for it.

Getting a cleanroom operational on time and to specification depends on what happens between the first conversation and the certification report. The questions here cover how we run a project, what turnkey delivery actually means, how to pick the right building, where designs most often go wrong, and how ancillary components like airlocks and pass-throughs fit into the overall scope.

A: Every phase of a cleanroom project — design, engineering, manufacturing, installation, testing, and certification — is managed by our own team, not handed off to subcontractors. We begin each project by working through your process requirements, regulatory obligations, and facility constraints before a single panel is fabricated. If you want a detailed look at what the installation phase involves, our what to expect during cleanroom installation page walks through it step by step.

A: Fully turnkey cleanroom solutions cover design, manufacturing, installation, and certification under one roof. When one company owns the entire process, there is no finger-pointing between vendors and no schedule risk from third-party delays. If you want to understand exactly what single-source accountability delivers, five reasons to purchase a turnkey cleanroom lays out the case, and our complete cleanroom systems page shows the range of configurations available.

A: Modular construction is substantially faster than conventional construction in almost every case, with timelines driven by project size, classification, HVAC complexity, and site readiness. Design approval and permitting are typically the longest lead items, not fabrication or installation — and eight tips for expediting your cleanroom design-build goes into each factor in detail. Standard-size pre-configured cleanroom systems are available for clients who need the shortest possible path to an operational, certified room.

A: Choosing the right building is one of the most consequential decisions in a cleanroom project. Ceiling height, floor flatness, HVAC infrastructure capacity, electrical availability, and access for installation crews are all factors that need to be assessed before a design can be finalized, and our 10 tips for selecting a building for a cleanroom covers each one. The wrong building can add significant cost and time to a project, so we review your facility as part of the cleanroom design process to catch issues before they become expensive field modifications.

A: The most common cleanroom design mistakes we see involve underestimating HVAC requirements, selecting the wrong ISO classification for the application, failing to plan for gowning and material transfer, and building with no accommodation for future changes. Catching these errors costs nothing early in the process and significant money once construction has started. Before engaging any manufacturer, use our cleanroom design checklist to evaluate your requirements against a structured framework.

A: Airlocks, gowning rooms, and pass-through chambers are designed and installed as integrated components of a complete cleanroom project. These elements are planned from the start of the design process to maintain pressure differentials, prevent cross-contamination, and support proper gowning and material transfer protocols. Our page on cleanroom airlocks explains how they function, and our what is a cleanroom airlock article covers when they are required for your classification and application.

A cleanroom that cannot pass regulatory scrutiny is not a cleanroom. The questions here cover what our certification service includes, how validation works for FDA-regulated facilities, what cGMP compliance requires in practice, and how we build to USP 797 and USP 800 standards for compounding environments.

A: Certification is included as a standard part of every project we deliver. We provide cleanroom testing and certification services to ISO 14644-1 and FED STD 209E standards, confirming that your room meets its specified classification before operations begin. Our certification team performs particle counting, airflow velocity measurements, filter integrity testing, and all other tests required to issue a certificate of compliance. We offer cleanroom certification as part of a turnkey project delivery and as a standalone service for rooms built by others that need third-party certification.

A: The cleanroom validation process is the documented sequence of activities that demonstrates your controlled environment consistently performs within its specified classification under operational conditions. Validation goes beyond initial certification to include installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ), all of which are required for FDA-regulated environments. We have direct experience supporting validation programs for pharmaceutical, medical device, and biotech clients, and our cleanroom testing and certification team works through the documentation requirements with you based on your specific regulatory context.

A: cGMP compliance is not a feature we bolt on at the end of a project; it is built into the design from the first conversation. Our cGMP cleanrooms for pharmaceutical manufacturing meet FDA and current Good Manufacturing Practice requirements for sterile and non-sterile drug production, and our pharmaceutical cleanroom team is well-versed in the distinction between GMP and cGMP requirements, and we design facilities built for long-term inspectability and compliance, not just initial certification. We have delivered cGMP environments for some of the most recognized pharmaceutical companies in the country, and we can have a quote to you in 48 hours.

A: Compounding pharmacies and hospital pharmacy environments have specific structural requirements under USP 797 and USP 800 standards that we design and build to. USP 797 governs sterile compounding and requires ISO Class 5 primary engineering controls within an ISO Class 7 buffer room and ISO Class 8 anteroom. USP 800 adds requirements for hazardous drug handling, including negative pressure buffer rooms, and we have built compliant compounding cleanrooms for hospital pharmacies, outpatient infusion centers, and compounding pharmacies across the country.

Two questions come up on every project: what will it cost, and is modular construction worth it? The answers here break down what drives cleanroom pricing, lay out the total cost of ownership case for modular over conventional construction, and explain the fastest way to get an accurate number for your specific project.

A: Cleanroom pricing depends on classification, size, construction type, HVAC complexity, and level of finish, and ranges from tens of thousands of dollars for a basic softwall room to several million for a large cGMP pharmaceutical facility. The variables that drive those differences are broken down on our cleanroom cost page, and the modular cleanroom ROI analysis shows how modular compares to conventional construction across the life of the facility. The fastest path to an accurate number for your project is a quote — submit your requirements and we will respond within 48 hours.

A: A modular cleanroom typically delivers a lower total cost of ownership than conventional construction, with faster installation, lower initial capital cost, and the ability to reconfigure or relocate the room as your needs change. Our modular cleanroom ROI analysis covers the financial comparison in detail, including construction cost, schedule savings, and the long-term value of a reconfigurable asset. The eight reasons to choose a modular cleanroom over traditional construction addresses the operational and regulatory benefits that factor into the full value equation.