Your medical gas system is a lifeline, delivering oxygen, medical air, and vacuum to the bedside. The company you hire to inspect it is responsible for giving you an accurate, documented picture of how that lifeline is performing, and that picture is what you rely on when a surveyor walks in. That makes the choice of provider more consequential than it might first appear. The wrong one can miss deficiencies, hand you reports that do not hold up, or blur the line between inspecting a system and having a stake in it.
Not every provider that calls itself a medical gas inspection company brings the same credentials, capabilities, or independence. Whether you manage a dental practice, a veterinary clinic, an ambulatory surgery center (ASC), or a hospital, this article gives you a practical way to vet one: the certifications that actually matter, the questions worth asking before you sign, the difference between inspection and verification capabilities, and why independence from installers is not negotiable.
Required Certifications (ASSE 6020 / 6030)
Medical gas work is governed by professional qualification standards from the American Society of Sanitary Engineering (ASSE), known as the ASSE 6000 series. Each number maps to a specific role:
- ASSE 6010, Installer: Qualified to braze and install medical gas piping.
- ASSE 6020, Inspector: Qualified to inspect medical gas systems against applicable code requirements. Along with ASSE 6040, it is one of the credentials most relevant to routine inspection work.
- ASSE 6030, Verifier: Qualified to perform the independent, third-party verification that NFPA 99, the National Fire Protection Association’s Health Care Facilities Code, requires on new and modified systems.
- ASSE 6040, Maintenance: Qualified to maintain existing medical gas systems, including routine testing and upkeep.
Many experienced technicians hold more than one of these. What matters is that the company can show you current, named certifications for the people who will actually do the work, not a vague claim that its “technicians are certified.” In many jurisdictions these credentials are not optional; NFPA 99 and model codes expect qualified, certified personnel. As we explain in Certified vs. Verified, people get certified and systems get verified, so the right question is which certifications each technician personally holds. Our verification checklist covers the specific credentials to look for in more detail.
Questions to Ask Before You Hire
A short conversation up front tells you most of what you need to know. Before you commit, ask:
- What certifications do your technicians hold, and can I see them? Look for current ASSE 6020, 6030, or 6040 credentials, as they apply to the work, tied to the individuals assigned to your facility.
- Are you independent of any installation or construction work on my system? This is the one that protects the integrity of your results. More on it below.
- Do you provide both inspection and verification, or only one? A provider that does both can support you across the life of the system.
- What exactly is included in your inspection, and how do you price it? A credible quote scales with your component count, not a flat package. Our guide to medical gas annual inspection cost explains what drives the number.
- Can you correct minor deficiencies during the visit, or do I just get a list? A company that performs as-we-go repairs (when you authorize them) can close many minor findings in the same visit. Ask how parts and repair labor are billed, and how work that needs a shutdown or verification is handled.
- What documentation will I receive, and is it survey-ready? You want dated, component-level results and survey-ready reports that support your accreditation records, not a verbal summary.
- Do you know the NFPA 99 edition adopted by my Authority Having Jurisdiction (AHJ)? Codes vary by jurisdiction and edition, and the provider should know yours.
- Can you handle my facility type? Dental, veterinary, ASC, and hospital systems differ in scope, and the provider should be comfortable with yours. If you manage several sites, ask how they keep inspection records consistent across all of them.
The answers will quickly separate a genuine medical gas specialist from a general mechanical contractor who inspects on the side.
Inspection vs. Verification Capabilities
These two capabilities sound similar but serve different needs, and knowing which you require keeps you from hiring the wrong scope.
- Inspection is a recurring evaluation of the condition and performance of an existing, in-service system against applicable NFPA 99 requirements, manufacturer recommendations, facility policies, and the agreed scope. It is the activity behind your routine annual safety inspection and is performed by qualified, ASSE-credentialed personnel.
- Verification is the one-time, independent test of a new system, an addition, a renovation, a temporary installation, or a repaired line, before it is placed into service. NFPA 99 requires it, and it must be performed by an ASSE 6030 verifier who is independent of the installer. Our verification guide explains when and why.
When you choose a provider, a company that can do both gives you one partner across the system lifecycle: routine inspections year to year, plus verification whenever you renovate, expand, or repair. Just confirm that the verification of any new work is kept independent of whoever installed it, and do not assume one credential automatically covers the other. Ask.
Why Independence From Installers Matters
This is the principle that underpins everything above. NFPA 99 requires that verification of a new or modified medical gas system be performed by a party independent of the installer, and the reason is straightforward: a company testing its own installation has an interest in that work passing. An independent tester has no such stake. They report what they find.
NFPA 99’s independence requirement applies specifically to verification, but a similar instinct is worth applying when you choose an inspection provider. A company that is not invested in the assumption that your system is fine is more likely to give you an accurate picture, and an accurate picture is what protects patients and supports survey readiness. If the same company also maintains or repairs your system, that can be practical and efficient; just be clear about which work is being reviewed and by whom. This is also why a responsible provider keeps its verification work independent of any installation it performs, rather than signing off on its own pipework. The broader question of who carries which responsibility is one we take up in Who Owns Safety?.
In plain terms, objectivity is what makes a report worth trusting. A finding from a party with nothing to gain is a finding you can act on with confidence.
How Compass Cryogenics Helps
Compass Cryogenics is a medical gas inspection, testing, and verification company, and the credentials that matter belong to our people. Our technicians are ASSE certified, and credential details for the individuals assigned to your facility are available on request. We perform scope-based medical gas safety inspections, provide or coordinate third-party verification by a qualified, independent ASSE 6030 verifier whenever new or modified work requires it, subject to project scope, keeping verification independent of any work we installed or repaired. We complete authorized minor repairs during the visit when practical and deliver digital and printable survey-ready reports organized for your compliance and accreditation records.
We work across the system lifecycle and across facility types, from single-site dental and veterinary practices to ASCs, hospitals, multi-building campuses, and multi-site groups across New England, the Mid-Atlantic, and select Midwest markets. We scale our scope to the system in front of us and schedule around your clinical operations to keep disruption to a minimum. When you need a wider look at your documentation and survey readiness, we also offer a compliance review of your program, and our guide to Joint Commission medical gas compliance is a good place to see what surveyors expect.
Frequently Asked Questions
What certifications should a medical gas inspection company have?
Look for technicians holding current ASSE credentials: ASSE 6020 for inspectors, ASSE 6030 for verifiers, ASSE 6040 for maintenance personnel, and ASSE 6010 for installers. Ask to see the certifications tied to the individuals who will work on your system, since, as we cover in Certified vs. Verified, credentials belong to people, not companies in the abstract.
What is the difference between an ASSE 6020 inspector and an ASSE 6030 verifier?
An ASSE 6020 inspector is qualified to inspect and test installed systems, the work behind a routine safety inspection. An ASSE 6030 verifier is qualified to perform the independent third-party verification that NFPA 99 requires on new or modified systems before they go into service. Many technicians hold both, but they are distinct credentials.
Why does the verifier need to be independent of the installer?
Because a company testing its own installation has an interest in that work passing, while an independent party does not. NFPA 99 specifically requires verification of new or modified systems to be performed by someone independent of the installer. Routine inspections are not bound by that same rule, but an objective inspection provider is still worth looking for, a point we explore in Certified vs. Verified.
What documentation should I receive after an inspection?
You should receive dated test results, a clear list of any deficiencies and the corrective actions taken, and survey-ready reports in both digital and print form. The Centers for Medicare and Medicaid Services (CMS), the Joint Commission, and other accrediting organizations expect documented evidence of testing and maintenance, so the deliverable matters as much as the work. Our guide to Joint Commission medical gas compliance details what to keep on file.
Can one company handle both inspections and verifications for my facility?
In many cases, yes, as long as it holds the right credentials and keeps the verification of any new work independent of any installation or repair it performed. A single qualified partner across inspection and verification is convenient, since it covers both your routine inspections and the testing required when you renovate or repair.
Vetting a medical gas inspection company for your facility? Compass Cryogenics brings ASSE-credentialed technicians, inspection and verification capabilities, authorized minor repairs during the visit when practical, and survey-ready reports. For the most accurate quote, send us your facility address and an approximate count of outlets and inlets, alarm panels, zone valve boxes, and source equipment. If you do not have an inventory, we can help you build one. Schedule an inspection or request a quote, call us at (888) 833-2796, or drop us a line through the contact form on this page.
