Why trade certification matters — and why I helped build one for grill service

When you hire someone to work on a gas appliance in your backyard, how do you know they know what they're doing? For a lot of trades, there is a clear answer: a license, a certification, a recognized standard. For grill service, there wasn't much of one. Anyone with a truck and a pressure washer could call themselves a grill cleaner.

That gap is why I founded the American Grill Service Institute (AGSI) — an independent certification body for grill service professionals. This article explains why certification matters in any trade, what makes a credential credible and how AGSI approaches it.

What a trade certification is for

A good certification does three things:

1. It defines a standard. It writes down what a competent professional needs to know — the steps, the safety checks and the reasoning behind them.
2. It tests against that standard. Not just attendance or a purchase, but a demonstrated ability to meet it.
3. It makes the result verifiable. A customer, employer or partner can confirm a credential is real and current.

For customers, that reduces uncertainty. For technicians, it rewards the work of learning a trade properly. For the industry, it creates a shared floor that raises the quality of everyone's work.

Badges versus credentials

Not every certificate is a credential. Some are little more than a receipt for a course. The difference usually comes down to a few questions:

That last point matters. A credible body should say plainly what it is and isn't.

How AGSI approaches grill service certification

AGSI credentials are exam-based. They are not awarded for buying anything or simply completing a course.

Two levels

• Certified Grill Cleaning Technician (CGCT) — the Level I credential. It covers the fundamentals of professional grill cleaning and safety. The exam is 70 questions in 90 minutes, with a 75% passing score.
• Certified Advanced Grill Service Technician (CAGST) — the advanced credential. It builds on CGCT, which is a prerequisite, and covers more advanced service work, including diagnostics, repair and gas safety fundamentals.

Built toward a recognized framework

AGSI's program is designed in alignment with the principles of ISO/IEC 17024, the international standard for bodies that certify people. AGSI is clear that being designed toward that standard is not the same as holding accreditation under it, and it does not claim accreditation it doesn't have. I think that honesty is part of what makes a credential worth trusting.

Renewal and verification

Credentials renew every three years, so a certification reflects current knowledge rather than something learned once and forgotten. Anyone can check a credential through AGSI's public verification page.

Why grill service needed this

A grill is a gas appliance. Cleaning one properly involves taking apart burners, clearing venturi tubes and valve orifices, checking for leaks and reassembling everything so it works safely. Done well, it makes the grill safer and more reliable. Done badly, it can create problems that weren't there before. I cover what those safety checks involve in grill safety checks: gas, grease and flare-ups.

Without a standard, customers had no easy way to tell the difference between those two outcomes before they hired someone. A certification gives them a starting point.

What it means for a business

At Husker Grill Cleaning, our technicians are certified through AGSI and the team includes a CAGST-credentialed technician. That shapes how we work:

• A consistent process. Every deep clean follows a defined multi-step process, so quality doesn't depend on who shows up.
• Safety as a standard step. Gas leak checks and safety inspections are part of every service, not an upsell.
• Easier training. A published standard is something new technicians can learn against.
• Customer trust. Customers can see, and verify, what the credential means.

None of that replaces doing good work. A certificate on the wall doesn't clean a grill. But a standard that technicians are tested against makes good work more likely and more consistent.

What to look for in any trade credential

Whether you're hiring a grill technician, an electrician or anyone else, a few questions help you judge a credential:

• Is it earned by passing an assessment? Or by buying something?
• Who issues it, and are they independent?
• Is the standard published? Can you see what it covers?
• Does it renew?
• Can you verify it yourself?
• Is the issuer honest about its own status?

If the answers are clear, the credential probably means something. If they're vague, treat it as marketing.

Certification and reputation

There's a connection here to something else I work on. A trade credential is one way to make competence visible and verifiable. A person's online presence is another. In both cases, the goal is the same: when someone looks you up, they should find accurate, checkable information. That's the idea behind FairlyKnown, and I wrote more about it in what your name says online when you run a local business.

Writing a standard is harder than it sounds

When people imagine a certification, they usually imagine the exam. But the hardest part comes before that: writing down what a competent professional actually needs to know. For grill service, that means breaking down a job most people think of as "cleaning" into its real components — disassembly, cleaning methods for different materials and parts, gas system fundamentals, leak detection, ignition systems, grease management, safety hazards and reassembly — and deciding what level of knowledge each one requires.

That process forces clarity. Steps that experienced technicians do by instinct have to be named and explained. Safety practices have to be justified. Different grill types — gas, pellet, charcoal, built-in — have to be accounted for. The result is useful even beyond the exam, because it gives new technicians a clear map of what they need to learn.

Why exams, and why pass marks

An exam-based credential has to answer a hard question: how do you know someone actually knows the material? The answer is an assessment with a published structure and a published passing score. For AGSI's Level I credential, that means 70 questions in 90 minutes with a 75% passing score.

Publishing those details matters. It tells candidates what to expect, and it tells customers and employers that the credential isn't a participation certificate. It also keeps the issuing body honest: if the standard is published, it can be judged.

Separating learning from certifying

One principle from the world of personnel certification is that the body certifying people should keep its certification decisions separate from any training it offers. The reason is simple: if the same people who sell the course also decide who passes, there is an obvious conflict of interest. AGSI keeps study materials voluntary and free to use — they are never required to sit for the exam — so the credential reflects what someone knows, not what they bought.

Renewal keeps a credential honest

Equipment changes. Best practices change. People forget. A credential that never expires tells you what someone knew at one point in time. Renewal on a set cycle — every three years, in AGSI's case — means the credential reflects current knowledge.

What customers can do with a credential

For a customer, a credential is only useful if it can be checked. That's why verification matters. If a technician says they are certified, you should be able to confirm it independently through the issuer's public verification page, not just take their word for it. Asking is perfectly reasonable, and any professional who has earned a real credential will be glad you did.

Certification in other trades

None of this is unique to grills. Many trades — from electrical work to HVAC to inspections — have credentials, licenses or certifications of different kinds. The questions in the table above apply to all of them. When you hire someone for work in or around your home, it's worth taking a minute to understand what their credential means and whether you can verify it.

What certification can't do

It is worth being clear about the limits. A certification shows that someone has demonstrated knowledge against a standard at a point in time. It doesn't guarantee every job will be perfect, and it doesn't replace insurance, good business practices or the manufacturer's instructions. It is one signal among several — alongside reviews, photos of real work, clear pricing and how a business communicates.

Used that way, it is a genuinely useful signal. It narrows the field from "anyone with a truck" to "people who have shown they know the work", and it gives customers a way to check that claim for themselves.

The short version

A good trade certification defines a standard, tests people against it and makes the result verifiable. Credible credentials are exam-based, independent, renewable and honest about their own status. Grill service didn't have much of that, which is why AGSI exists: two exam-based credentials, CGCT and CAGST, designed in alignment with ISO/IEC 17024 principles, renewed every three years and publicly verifiable. Customers deserve a way to tell who knows the work. Technicians who learn it properly deserve a way to prove it.