How often does a commercial fire sprinkler system need to be inspected?

Under NFPA 25, wet pipe sprinkler systems get quarterly inspections of gauges and alarm devices and a full annual inspection and test by a licensed contractor, with an internal pipe assessment every 5 years. Control valves are checked monthly (weekly if they are only sealed). Your local fire marshal may require more.

How often does a fire alarm system need to be tested?

NFPA 72 requires most fire alarm devices, the control panel and batteries to be inspected and tested annually, and smoke detector sensitivity to be tested within a year of installation and then every 2 years.

How often do fire extinguishers need service?

Under NFPA 10, staff should visually check each extinguisher monthly, a licensed company must do annual maintenance, stored-pressure dry chemical units need 6-year internal maintenance, and hydrostatic tests are due every 5 or 12 years depending on the type.

How often does a restaurant hood suppression system need service?

Kitchen hood suppression systems need inspection and service every 6 months under NFPA 17A and NFPA 96, including replacing fusible links. Hood and duct cleaning runs from monthly to annually depending on cooking volume.

Is this schedule legally binding?

No. It is a baseline drawn from the NFPA standards most jurisdictions adopt. Your local fire marshal (the authority having jurisdiction) decides which editions and amendments apply, and insurers or manufacturers can add requirements.

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What fire inspections does your building need, and when?

Tell us which fire protection systems your building has. You'll get a dated schedule of every required inspection and test, who's allowed to do each one in your state, and licensed contractors nearby.

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Which systems does your building have?

Dates are optional but make the schedule exact. Find them on the service tags or your last inspection report.

Wet pipe sprinkler system The most common sprinkler system: pipes stay filled with water.

Dry pipe or preaction sprinkler system Pipes hold air until a sprinkler opens; used in unheated spaces.

Fire pump Boosts water pressure for sprinklers and standpipes.

Standpipe system Hose connections firefighters use inside multi-story buildings.

Backflow preventer on the fire line Keeps sprinkler water from flowing back into the public supply.

Fire alarm system Detectors, pull stations, horns and strobes, and the control panel.

Portable fire extinguishers Hand-held extinguishers throughout the building.

Kitchen hood suppression system Wet chemical system over commercial cooking equipment.

Emergency and exit lighting Battery-backed exit signs and egress lights.

Your schedule

Next 12 months

Due	System	Task	Who

Longer-term items

When	System	Task	Who

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Inspection frequency reference

Baseline intervals from the NFPA standards most jurisdictions adopt. Your local fire marshal has final say on editions and local amendments.

Wet pipe sprinkler system · NFPA 25 · Fire sprinkler contractors

Frequency	Task	Who	Details
Monthly	Control valve check	Your staff	Confirm control valves are open and locked or supervised. Sealed (unlocked, unsupervised) valves need weekly checks.
Quarterly	Quarterly inspection	Licensed contractor	Gauges, alarm devices, waterflow alarms, fire department connection and signage.
Annual	Annual inspection and test	Licensed contractor	Full inspection of sprinklers, pipe and hangers, main drain test, valve operation and alarm tests.
Every 5 years	Internal pipe assessment	Licensed contractor	Open the system to check for obstructions and corrosion. Also replace or recalibrate gauges every 5 years.
By age or type	Sprinkler sample testing	Licensed contractor	Standard-response sprinklers are sample-tested or replaced at 50 years, fast-response at 20 years.

Dry pipe or preaction sprinkler system · NFPA 25 · Fire sprinkler contractors

Frequency	Task	Who	Details
Quarterly	Quarterly inspection	Licensed contractor	Air pressure, gauges, alarm devices and valve condition.
Annual	Annual trip test	Licensed contractor	Partial trip test of the dry pipe valve every year; a full-flow trip test every 3 years.
Annual	Drain condensate before freezing weather	Licensed contractor	Drain low points (auxiliary drains) before the freezing season and as needed after.
Every 5 years	Internal pipe assessment	Licensed contractor	Check for obstructions and corrosion; dry systems are especially prone to it.
Every 10 years	Dry sprinkler testing	Licensed contractor	Dry-type sprinklers are sample-tested or replaced every 10 years.

Fire pump · NFPA 25 · Fire sprinkler contractors

Frequency	Task	Who	Details
Monthly	No-flow (churn) test	Your staff	Run the pump without flowing water: weekly for diesel pumps, monthly for most electric pumps.
Annual	Annual flow test	Licensed contractor	Full-flow performance test compared against the pump's rated curve.

Standpipe system · NFPA 25 · Fire sprinkler contractors

Frequency	Task	Who	Details
Annual	Annual inspection	Licensed contractor	Hose connections, valves, piping and signage.
Every 5 years	5-year flow or hydrostatic test	Licensed contractor	Flow test for automatic and semi-automatic standpipes; hydrostatic test for manual and dry standpipes.

Backflow preventer on the fire line · NFPA 25 and local water utility · Fire sprinkler contractors

Frequency	Task	Who	Details
Annual	Annual backflow and forward flow test	Specialist	Usually done by a certified backflow tester; many sprinkler contractors have one. Your water utility may set its own deadline.

Fire alarm system · NFPA 72 · Fire alarm companies

Frequency	Task	Who	Details
Annual	Annual inspection and test	Licensed contractor	Test initiating devices, notification appliances, the control panel, batteries and monitoring connection.
Every 2 years	Smoke detector sensitivity test	Licensed contractor	Within a year of installation, then every 2 years (up to 5 if results stay within range).

Portable fire extinguishers · NFPA 10 · Fire extinguisher companies

Frequency	Task	Who	Details
Monthly	Monthly visual check	Your staff	Confirm each extinguisher is in place, charged (gauge in the green), unobstructed and tagged. Record the date.
Annual	Annual maintenance	Licensed contractor	Full maintenance and new service tag by a licensed company.
Every 6 years	6-year internal maintenance	Licensed contractor	For stored-pressure dry chemical extinguishers that require a 12-year hydrostatic test.
By age or type	Hydrostatic test	Licensed contractor	Every 5 years for water, CO2 and wet chemical (Class K) units; every 12 years for dry chemical.

Kitchen hood suppression system · NFPA 17A and NFPA 96 · Fire extinguisher companies

Frequency	Task	Who	Details
Semiannual	Semiannual inspection and service	Licensed contractor	Inspect and test the system and replace fusible links.
Semiannual	Hood and duct cleaning	Specialist	Interval depends on cooking volume: monthly for solid fuel, quarterly for high volume (24-hour, charbroiling, wok), semiannual for moderate, annual for low volume. Done by a hood cleaning company.
Every 12 years	Cylinder hydrostatic test	Licensed contractor	Agent cylinders are hydrostatically tested every 12 years.

Emergency and exit lighting · NFPA 101

Frequency	Task	Who	Details
Monthly	Monthly 30-second test	Your staff	Switch each unit to battery for at least 30 seconds and record the result.
Annual	Annual 90-minute test	Your staff	Run each unit on battery for 90 minutes. Often done by an electrician or fire alarm company.

Frequently asked questions

How often does a commercial fire sprinkler system need to be inspected?: Under NFPA 25, wet pipe sprinkler systems get quarterly inspections of gauges and alarm devices and a full annual inspection and test by a licensed contractor, with an internal pipe assessment every 5 years. Control valves are checked monthly (weekly if they are only sealed). Your local fire marshal may require more.
How often does a fire alarm system need to be tested?: NFPA 72 requires most fire alarm devices, the control panel and batteries to be inspected and tested annually, and smoke detector sensitivity to be tested within a year of installation and then every 2 years.
How often do fire extinguishers need service?: Under NFPA 10, staff should visually check each extinguisher monthly, a licensed company must do annual maintenance, stored-pressure dry chemical units need 6-year internal maintenance, and hydrostatic tests are due every 5 or 12 years depending on the type.
How often does a restaurant hood suppression system need service?: Kitchen hood suppression systems need inspection and service every 6 months under NFPA 17A and NFPA 96, including replacing fusible links. Hood and duct cleaning runs from monthly to annually depending on cooking volume.
Is this schedule legally binding?: No. It is a baseline drawn from the NFPA standards most jurisdictions adopt. Your local fire marshal (the authority having jurisdiction) decides which editions and amendments apply, and insurers or manufacturers can add requirements.

Sources: NFPA 25 (water-based systems), NFPA 72 (fire alarm), NFPA 10 (extinguishers), NFPA 17A and 96 (kitchen hood systems), NFPA 101 (emergency lighting). General guidance, not legal advice. Machine-readable: Markdown.