Fire Suppression Technician: Kitchen Hood, Clean Agent and Special Hazards Careers

A fire suppression technician is the trade's specialist in fixed suppression systems: kitchen hood wet chemical, clean agent, CO2, dry chemical, halon, foam, water mist and vehicle systems.

The work splits between the installer side, putting new systems in, and the service side, keeping installed systems going through inspection, testing and maintenance — the ITM work that fills a fire suppression system technician's calendar.

The 2024 International Fire Code requires fire protection systems to be inspected, tested and maintained in accordance with the referenced standards listed in Table 901.6.1.

The suppression entries map like this:

CO2 maps to NFPA 12, halon to NFPA 12A, dry chemical to NFPA 17, wet chemical to NFPA 17A, water mist to NFPA 750 and clean agent to NFPA 2001.

That table is effectively the job description's syllabus.

A suppression technician is the person who can move between a restaurant hood over the fryers on Monday and a CO2 total-flooding system in an enclosed hazard on Tuesday, and who knows each family's agent, release hardware and test cycle.

The role sits between two better-known neighbors.

Sprinkler fitters handle the sprinkler systems, and the portable extinguisher trade covers the units mounted on walls.

Suppression technicians take the engineered and pre-engineered systems that discharge everything else.

For these manufacturers, the employer map runs through the distributor network: Pyro-Chem sells and services its products through a distributor network, and every distributor on Amerex's locator is an authorized partner providing inspection, maintenance, recharging and testing of extinguishers and suppression systems.

The Johnson Controls certification courses our research checked are for authorized distributors only, and Amerex gives its authorized distributors access to what it calls "exclusive manufacturer systems training".

For those courses, a distributor employer is the doorway, as covered below.

The trade's great divide runs between the pre-engineered kitchen package and the special hazards portfolio.

Kitchen hood protection is pre-engineered territory: the 2024 IFC's commercial-cooking rules cover pre-engineered dry- and wet-chemical systems.

NFPA 2001 covers clean agent systems in both engineered and pre-engineered forms, and CO2, dry chemical, halon and water mist each carry their own standard and service rhythm in the IFC's table.

Kitchen hood technician work starts with UL 300.

The 2024 IFC requires the pre-engineered dry and wet chemical systems protecting commercial cooking to be tested to UL 300 and listed, installed per NFPA 96, the listing and the manufacturer's instructions.

Wet chemical is currently the only system type that meets UL 300, as NFPA's own summary of NFPA 96-2021 puts it.

UL 300-compliant kitchen systems were first required in 1994, when the industry shifted from animal fats to vegetable oils and better-insulated cooking appliances — the history a Yakima County, Washington fire marshal's public handout tells.

Johnson Controls describes its ANSUL R-102 — the kitchen system its courses certify — as protecting restaurant cooking appliances, hoods and ducts, with course coverage spanning design, installation, testing, recharging and maintenance.

That is the kitchen hood technician's territory in one sentence.

Under the 2024 IFC, commercial cooking suppression systems are serviced at least every six months and after any activation, by qualified individuals, with a certificate of inspection forwarded to the fire code official.

The six-month service covers detection, alarms, releasing devices and manual stations, weighs or verifies the agent, checks stored pressure and replaces cartridges at the manufacturer's intervals.

One point divides the documents: fusible links.

NFPA 96-2021, as summarized by NFPA, has kitchen systems maintained at least every six months with metal-alloy fusible links replaced at that same interval, while the 2024 IFC replaces fusible links and automatic sprinkler heads annually, with frangible bulbs exempt.

Which one applies depends on the locally adopted code and standard — worth knowing before you promise a customer an interval.

Changes in the kitchen trigger work too.

The 2024 IFC requires an existing commercial cooking suppression system to be brought into compliance when the cooking media, appliance positioning or cooking equipment changes.

Special hazards technician work is the other side of the divide: clean agent, CO2, dry chemical, foam, water mist, industrial systems and vehicle systems.

Johnson Controls' own training catalog gives the flavor — its TechXchange categories include foam, detection and actuation, industrial, restaurant, vehicle and gaseous systems, alongside the ANSUL Fire School.

CO2 carries the weight of its record.

An EPA review of CO2 extinguishing-system discharges located 51 incident records reporting 72 deaths and 145 injuries between 1975 and the review's 2000 publication.

OSHA's rules for covered fixed systems include hazard warning signs at the entrance to and inside protected areas, plus safeguards against entry while the atmosphere remains hazardous.

A distinctive pre-discharge employee alarm is required where gaseous agent design concentrations exceed safe exposure levels, including Halon 1211 and CO2 systems at design concentrations of 4 percent or more.

Releasing work also pulls this trade toward the fire alarm side of the industry: NFPA 72, the 2025 edition, is the National Fire Alarm and Signaling Code, though our research did not establish its specific requirements for releasing panels.

Here is the map a suppression technician carries, family by family: the NFPA standard behind each and the service cycle the 2024 IFC attaches to it.

Editions are the current editions as NFPA listed them on October 12, 2026.

• Wet chemical, kitchen hoods: NFPA 17A (2027), with kitchen ventilation under NFPA 96 (2027). The 2024 IFC calls for service at least every 6 months, and after any activation.
• Dry chemical: NFPA 17 (2027). Inspection and test every 6 months.
• Carbon dioxide: NFPA 12 (2025). Test every 12 months; high-pressure cylinders weighed every 6 months, with refill or replacement above 10% content loss; low-pressure tank gauges observed weekly; hoses examined annually and tested every 5 years at not less than 2,500 psi (high-pressure) or 900 psi (low-pressure).
• Halon 1301: NFPA 12A (2025), covering decommissioning and removal. Test every 12 months; containers checked every 6 months, with refill or replacement triggered at 5% weight or 10% pressure loss; hoses tested every 5 years.
• Clean agent: NFPA 2001 (2025). Test every 12 months; containers checked every 6 months against 5% weight and 10% pressure thresholds, with results recorded on a tag; hoses tested every 5 years.
• Water mist: NFPA 750 (2027). Designed and installed per NFPA 750, and supervised and alarmed like sprinkler systems.

The IFC's table adds one more stop: aerosol systems, which it points to NFPA 2010.

Those get a semiannual inspection by a trained person and an annual inspection, test and service by a certified fire suppression contractor trained on that specific system.

Federal workplace rules layer on top for systems installed for OSHA compliance.

Fixed extinguishing systems are inspected annually by a person knowledgeable in the system's design and function, and refillable container weights and pressures are checked at least semiannually, with maintenance triggered above 5 percent weight or 10 percent pressure loss.

Adopted editions can lag current ones.

Texas's administrative rules for its extinguisher and fixed-system licensing subchapter (28 TAC §34.507) adopt NFPA 17A-2021, NFPA 96-2021, NFPA 2001-2018 and NFPA 12-2018 — all older than the editions in the table.

The cycle your routes actually follow is the one your authority having jurisdiction has adopted, applied through your employer's procedures.

Halon work adds an environmental discipline of its own: EPA rules (40 CFR 82.270) prohibit knowingly venting halon while testing, maintaining, servicing, repairing or disposing of halon-containing equipment, and require employers to train halon technicians in emissions reduction within 30 days of hire.

What qualifies a fire suppression system installer or service tech is decided in layers: the state, the local fire code official, the contract owner and the system manufacturer each hold a piece of it.

States sit at the first layer, and Florida is one example.

Under Section 633.304, Florida Statutes, it is unlawful to service, recharge, repair, hydrotest, install, test or inspect fire extinguishers or pre-engineered systems without a Division of State Fire Marshal license, and each individual actually performing the work must hold a valid permit.

Florida's dealer licenses split into Classes A, B and C for portable extinguisher work and Class D for pre-engineered fire extinguishing systems.

Manufacturers hold the second layer, and the courses our research checked are gated.

Johnson Controls' TechXchange runs an 8-hour ANSUL R-102 online recertification course for authorized distributors only, ending in an exam and an R-102 product certification.

Its KITCHEN KNIGHT II certification training is a 1-day course, again for authorized distributors only.

It ends with an exam and a product certification that covers designing, servicing and maintaining the system.

The ANSUL A-101, LVS and CHECKFIRE vehicle-system certification runs 3 days on the same distributor-only terms.

One-day refresher sessions are offered for re-certification in some regions.

Amerex gives its authorized distributors access to what it calls "exclusive manufacturer systems training", and runs its own Training Center.

NICET holds the third layer.

Its Special Hazards Systems (SHS) program certifies technicians across four levels in the design, layout and/or installation and maintenance of special hazards suppression, with recertification every three years.

All SHS exams are being updated, and the new exams become available November 2, 2026.

This is a certification from NICET — a credential, not a state license.

Contract owners set the fourth layer, and federal work shows it.

The Navy's facilities ITM manual, UFM 3-601-02 (2026), requires NICET Level II in Special Hazards for clean agent, CO2 and detection/releasing systems, and for pre-engineered kitchen systems it accepts either NICET Level II Special Hazards or certification by ICC/NAFED in pre-engineered kitchen systems.

The same Department of Defense manual also accepts technicians individually qualified or endorsed by an equipment manufacturer for the specific equipment they maintain.

Our research found no BLS wage that isolates fire suppression technicians — the same gap it records for the extinguisher trade and for sprinkler inspectors.

The closest published figures belong to neighboring trades, each from a different SOC, so read each one as that trade's proxy, not as this occupation's wage or a range for it.

On the extinguisher side, the closest published proxy is SOC 49-9099, Installation, Maintenance, and Repair Workers, All Other: a national median of $23.67/hour ($49,230/year) in May 2025.

On the sprinkler side, the proxy is SOC 47-2152, Plumbers, Pipefitters, and Steamfitters: a national median of $30.67/hour ($63,800/year), and $30.30/hour in NAICS 238220, the industry where sprinkler contractors are classified.

Whether special hazards work itself carries a pay premium is not established in our research — check live postings for where pay actually sits.

Schedule follows the service cycles above.

Kitchen routes run on the six-month clock with after-activation callbacks; gaseous systems put annual tests, semiannual container checks and five-year hose tests on the calendar; and OSHA's annual check by a knowledgeable person applies to the fixed systems installed for OSHA compliance.

Employment law treats the work as what it is: front-line trade work.

The Department of Labor's Fact Sheet #17A says the FLSA's white-collar exemptions do not apply to blue-collar workers in maintenance and similar occupations, so service techs are generally entitled to overtime — with the exact status turning on their specific duties and pay.

Under 29 CFR 785.17, on-call time is work time when the tech must stay on or so close to the premises that the time cannot be used for their own purposes; merely being reachable is not.

And under 29 CFR 785.38, travel from job site to job site during the workday is hours worked, as is travel from the shop or a required meeting place to the work place.

For manufacturer credentials, entry runs through employers.

The Johnson Controls certification courses in our research are for authorized distributors only, and Amerex offers its authorized distributors what it calls "exclusive manufacturer systems training".

A job with a distributor service company is what puts those courses within reach.

The kitchen hood and vehicle certifications our research checked are short.

Johnson Controls' KITCHEN KNIGHT II course is 1 day and its ANSUL vehicle-system course is 3 days, each ending in an exam and a product certification, and the R-102 recertification runs 8 hours online.

From there, the special hazards ladder is NICET's: the SHS program's four levels on a three-year recertification cycle, with the updated exams landing November 2, 2026.

If federal work is the goal, read the owner's manual too — the Navy's UFM requires Level II Special Hazards for clean agent, CO2 and detection/releasing systems and accepts manufacturer endorsement for specific equipment.

Check the state layer before you plan, not after.

Florida's structure shows a state can require credentials from both the company and the individual, and adopted editions can lag current ones — Texas's rules adopt NFPA editions years behind the current list.

The craft rewards routine.

Kitchen service happens in live restaurants on a six-month clock with a certificate to the fire code official at the end of it, releasing panels reward fire-alarm literacy, and the CO2 side demands the hazard discipline its record has earned.

This page is career information, not licensing, legal, code, inspection, engineering or safety advice. Confirm licensing and certification requirements with your state fire marshal or licensing authority, and wage-and-hour questions with the U.S. Department of Labor's Wage and Hour Division.