Build the schedule
Select every system in the building. The finder merges the inspection, testing, and maintenance intervals into one schedule with code references.
This schedule is the easy part. Tracking it across 400 buildings is the hard part. Essential turns every row here into recurring work orders, mobile inspection forms, and AHJ-ready reports.
Book a 15-minute demoFull reference: NFPA inspection frequencies by system
The complete dataset behind the finder. Frequencies summarize commonly enforced editions of each standard; editions and local amendments move device categories around, so confirm against the edition your AHJ enforces before committing a schedule to a contract.
Common questions
How often do fire sprinkler systems need to be inspected?
NFPA 25 spreads sprinkler ITM across the calendar: gauges weekly on dry and pre-action systems and monthly on wet systems, waterflow alarm devices quarterly to semiannually depending on type, a main drain test and floor-level visual inspection annually, and an internal obstruction inspection of the piping every 5 years.
How often does a fire alarm system need to be tested?
NFPA 72 runs two separate clocks: visual inspections (Table 14.3.1) and functional tests (Table 14.4.3.2). Most initiating devices get a semiannual visual and an annual functional test, waterflow and valve supervisory devices test semiannually, and smoke detector sensitivity is verified within a year of installation and then every alternate year.
How often do fire extinguishers need to be checked?
Under NFPA 10: a visual inspection every 31 days, maintenance by a certified technician annually, an internal examination every 6 years for stored-pressure units on the 12-year hydro cycle, and a hydrostatic test every 5 or 12 years depending on cylinder type.
How often does a kitchen exhaust hood need professional cleaning?
NFPA 96 sets the interval by cooking volume: monthly for solid-fuel cooking, quarterly for high-volume operations like 24-hour kitchens, charbroiling, and wok cooking, semiannually for moderate volume, and annually for low-volume operations such as churches and seasonal kitchens.
Are these frequencies the same everywhere?
No. States and cities adopt different editions of each NFPA standard, and AHJs add local amendments. The intervals here reflect commonly enforced editions and are a planning baseline, not a substitute for the adopted code text.