Fire Pump Testing Requirements: NFPA 25, NFPA 20, and NEC Article 695

Why Fire Pump Testing Matters

A fire pump exists for one reason: to boost water pressure when the public main or on-site tank cannot deliver what the sprinkler or standpipe system needs. It may sit idle for years and then have to start automatically during a fire. NFPA describes it plainly -- a pump that passed its acceptance test on handover day carries no guarantee of readiness afterward unless it gets routine inspection, testing, and maintenance (ITM).

That ITM is defined by NFPA 25 -- not by NFPA 20, which governs selection and installation, and not by the National Electrical Code, which governs how an electric pump gets its power. Much of the confusion around fire pump testing requirements comes from mixing up these three documents.

This guide covers weekly and monthly no-flow (churn) tests and how they changed across editions, the annual flow test, diesel driver checks, transfer switch testing, NEC Article 695 at a high level, records, and health care notes. Section numbers are given only where we could confirm them, tied to a specific edition.

NFPA 20 vs. NFPA 25: Who Covers What

The documents cover different phases of a pump's life.

The current edition is not necessarily the one you must follow. Your enforceable edition is whatever your state or local fire code adopts, or, for CMS-certified health care facilities, the edition referenced by the Life Safety Code CMS adopted. Confirm it with your authority having jurisdiction (AHJ).

In short, NFPA 20 establishes what a new pump must do, the acceptance test at installation records its baseline, and NFPA 25 asks you to keep proving it against that acceptance curve or the nameplate data. For the rest of the water-based ITM program that surrounds the pump, see our NFPA 25 sprinkler inspection, testing, and maintenance schedule.

Weekly Fire Pump Inspections

NFPA 25 requires a weekly visual inspection of every fire pump. NFPA notes that "weekly" means once per calendar week and that trained facility staff can normally handle these inspections.

According to NFPA's summary, the weekly inspection covers three groups of conditions:

• Pump house or room -- heat is adequate, not less than 40 degrees F (4 degrees C); water is not collecting on the floor; the coupling guard is in place.
• Pump system -- suction, discharge, and bypass valves are fully open; piping is free of leaks; the suction gauge reads within the acceptable range; the suction reservoir is at the required level; wet pit suction screens are in place and unobstructed; test valves and the hose connection valve are closed and the line to the test valves is free of water.
• Electrical system -- the controller "power on" pilot light is lit; the transfer switch normal pilot light is lit; the isolating switch for the standby (emergency) source is closed; the reverse phase alarm light is off or the normal phase rotation light is on; oil in a vertical motor sight glass is at an acceptable level; and the jockey (pressure maintenance) pump has power.

No-Flow (Churn) Test Frequency: Weekly or Monthly

The no-flow test, commonly called a churn test, starts the pump and runs it without flowing water through the system. According to NFPA, the purpose is to confirm the pump will start automatically and will not overheat. The frequency depends on the driver type and, for electric pumps, on how critical the pump is to the water supply.

Current Rules (2014 Edition Onward)

NFPA's summary of the current requirements:

NFPA also notes that both pump types have allowances to extend the time between tests based on an approved risk analysis.

How the Frequency Changed Across Editions

This is where many facilities get tripped up, because the answer depends on which edition your jurisdiction enforces:

• Before the 2011 edition -- electric pumps were churn tested weekly, the same as diesel pumps, according to Risk Logic. An AHJ form based on NFPA 25-1998, for example, lists a weekly, 30-minute run for diesel pumps.
• 2011 edition -- relaxed the electric pump churn test to monthly, according to Risk Logic's summary of the edition changes.
• 2014 edition -- kept monthly as the default for electric pumps but added weekly exceptions for higher-risk arrangements, per Risk Logic. The table above reflects NFPA's current list of those exceptions.

If your water supply depends heavily on the pump, check whether your adopted edition puts your electric pump on a weekly schedule, and document the pump arrangement (including any redundant pump) in your test program.

How to Conduct the Churn Test

Start it automatically. The pump must be started by draining water from the pressure sensing line to simulate a system pressure drop, not by pressing the start button on the controller. NFPA 25 allows an automatic timer that uses a solenoid valve drain on the pressure control line (for a pressure-actuated controller) or another means for non-pressure-actuated controllers.

Run it long enough. Electric pumps run at least 10 minutes; diesel pumps run at least 30 minutes.

Have qualified personnel present. Qualified personnel must be in attendance whenever the pump is running unless automated inspection and testing is performed in accordance with NFPA 25. NFPA 25 defines qualified personnel as competent and capable individuals who meet the requirements and training for the field acceptable to the AHJ.

Watch for heat. The circulation relief valve should discharge a small flow of water during the test to keep the pump from overheating. The discharge water temperature must be monitored, and the pump shut down if necessary to protect the pump or driver.

What to Record

NFPA lists the observations for the no-flow test in two stages.

One red flag worth building into your log: NFPA notes that where the difference between discharge and suction readings is greater than 95 percent of the rated pump pressure, the situation must be investigated and corrected.

The Annual Fire Pump Flow Test

The annual flow test proves the pump still delivers water at the pressures the building depends on. Under the 2017 edition of NFPA 25 (Section 8.3.3.1, as quoted by QRFS), qualified personnel must test each pump assembly every year at three points: no-flow (churn), rated flow, and 150 percent of rated capacity flow.

The Three Test Points

QRFS attributes these benchmarks to NFPA 20's performance requirements for the pump; they are the fallback reference when acceptance test data are not available. Code Red Consultants lists the same three points.

The 2017 edition also sets minimum run times before the pump is shut down during the annual test: 10 minutes for electric motor-driven pumps and 30 minutes for diesel engine-driven pumps. Older editions handled this differently. Brad Keyes wrote in Healthcare Facilities Today that NFPA 25-1998 required a 30-minute churn during the annual test for both driver types, and that the 2011 edition dropped the fixed churn duration.

Test Methods

The 2017 edition recognizes three ways to discharge and measure water during the annual test:

• Hose streams -- water discharges through hoses connected to the fire pump test header, and flow is measured at each stream. AHJ test forms list playpipes and diffusers as typical measuring equipment.
• Bypass flowmeter to a drain or suction reservoir -- water passes through a flowmeter and leaves the system.
• Closed-loop metering -- water passes through a flowmeter and returns directly to the pump suction. The temperature of the recirculating water must be monitored so it stays below levels that could damage the pump or engine. If the results are not consistent with the previous annual test, the test must be repeated, and where the specified repeat arrangement is not possible, the flowmeter must be calibrated and the test repeated.

QRFS's summary of the 2017 edition and an older AHJ form based on NFPA 25-1998 both indicate that at least one annual test in every three years must use hose streams or a bypass flowmeter to a drain or suction reservoir, rather than closed-loop recirculation. The wording differs by edition, so check yours.

Under the 2017 edition, gauges and transducers must be calibrated at least annually to within 1 percent and flowmeters to within 3 percent, running the engine above rated speed is not an acceptable way to reach rated performance, and the pressure relief valve is observed at each flow condition.

Acceptance Criteria and Allowable Degradation

The annual results are corrected for speed and plotted against a reference curve. Under the 2017 edition, as QRFS summarizes it, results are acceptable when both of these are true:

• The pump supplies the full demand of the fire protection system.
• At each test point, the pump delivers at least 95 percent of the flow and pressure on either the original unadjusted field acceptance test curve or the manufacturer's nameplate data.

This is often described as an allowable 5 percent degradation. Code Red Consultants notes that performance below that threshold must be investigated to find the cause. A pump that cannot meet system demand is a deficiency that needs correction, however close it is to the curve.

Diesel Driver Inspection and Maintenance

A diesel-driven fire pump adds an engine, fuel system, batteries, and cooling system, and NFPA 25 gives each of them its own schedule. The weekly items below come from AHJ inspection forms built on NFPA 25: an Alabama form based on the 1998 edition and a Pasadena Fire Department form based on NFPA 25 Chapter 8. The wording varies slightly by edition.

The same forms list monthly battery charger and state-of-charge checks, quarterly fuel strainer and battery terminal checks, and annual oil, oil filter, and fuel filter changes. Follow the manufacturer's schedule where it is stricter. QRFS also reports that recent editions require diesel fuel to be tested for degradation at least annually, and, on engines with electronic fuel management, annual testing of the backup electronic control module and primary and redundant sensors.

Transfer Switch Testing for Pumps with Alternate Power

Many electric fire pumps have a second power source, usually an on-site generator, connected through a fire pump transfer switch. NFPA 25 includes that switch in the annual test. QRFS summarizes the sequence in the 2017 edition (Section 8.3.3.9) as follows:

1. Simulate a power failure while the pump is running at peak load.
2. Verify that the transfer switch transfers to the alternate power source.
3. Record voltage, amperage, rpm, pressures, and flow while on the alternate source.
4. Confirm the pump runs at peak load on the alternate source for at least 2 minutes.
5. Remove the power failure condition and verify the pump is reconnected to the normal source after a time delay.

QRFS notes the purpose is to confirm the overcurrent protective devices (fuses or circuit breakers) do not open while the pump runs on the alternate source at peak load.

The generator itself is tested under NFPA 110, not NFPA 25. QRFS notes that NFPA 25 sends generator sets serving fire pumps to NFPA 110 for testing. For the generator and ATS side of the program, see our guides to NFPA 110 compliance and automatic transfer switch maintenance.

Emergency Power and NEC Article 695

NEC Article 695 covers the power sources and circuits for electric fire pumps and the switching and control equipment dedicated to the driver. It is a design and installation article, but it explains why fire pump power looks different from everything else in the building.

A reliable source first. Article 695 starts from a reliable source, such as a separate utility service, a connection ahead of the service disconnect, or an on-site power production facility. As Mike Holt explained in EC&M in 2016, where no single source is reliable, the AHJ can approve a combination of sources, including an on-site standby generator. No alternate source is required where a back-up engine-driven or steam turbine-driven pump is installed.

The generator must handle the pump. Consulting-Specifying Engineer notes that the starting voltage-drop limit described below must still be met when the generator is already serving its other loads and the fire pump is called to start. The annual transfer test is the routine field check of the pump running on that source.

A listed fire pump transfer switch. Where there are two sources, a transfer switch listed for fire pump service selects between them, and the transfer to the fire pump controller takes place in the pump room.

The pump runs no matter what. Overcurrent protection is sized to carry the motor's locked-rotor current indefinitely, accepting the risk of motor damage so the pump keeps running during a fire. Consulting-Specifying Engineer summarizes Section 695.7 of the 2020 NEC as limiting voltage drop to 15 percent during motor starting (with limited exceptions) and 5 percent while running at 115 percent of full-load current.

Articles 700, 701, and 702. The generator behind a fire pump is usually part of a larger emergency or legally required standby system. Consulting-Specifying Engineer cites an informational note pointing to Article 700 for alternate generator sources and Article 517 for health care. For how the NEC classifies those loads, see our guide to NEC 700, 701, and 702 generator wiring and load classification.

Records and Documentation

NFPA 25 makes the property owner, not the contractor, responsible for records. According to the National Fire Sprinkler Association's summary of Chapter 4:

• Retention. ITM records are kept for one year after the next inspection, test, or maintenance of the same type -- so at least the two most recent annual flow test reports.
• Life-of-system records. As-built drawings, hydraulic calculations, original acceptance test records, and manufacturer's data sheets are kept for the life of the system.
• Content. Each record identifies the activity, the organization that performed it, the frequency, the results and completion date, and the qualified person's name and contact information.

A complete fire pump file includes the NFPA 20 acceptance test and pump curve, weekly inspection and churn test logs (with pressures and start and crank times), annual flow test reports with the curve comparison, transfer switch results, diesel maintenance and fuel test records, and a deficiency and impairment log. Local fire codes may require longer retention, so confirm with your AHJ.

Notes for Health Care Facilities

Hospitals, nursing homes, and other Medicare- and Medicaid-certified providers follow the NFPA 25 edition referenced in the Life Safety Code that CMS adopted, not the latest edition.

CMS and the 2011 edition. CMS adopted the 2012 editions of NFPA 101 and NFPA 99. The regulation took effect July 5, 2016, and surveys against it began November 1, 2016 (S&C 16-29-LSC). The National Fire Sprinkler Association notes that Section 9.7.5 of the 2012 Life Safety Code requires sprinkler system ITM to follow the 2011 edition of NFPA 25. On the CMS fire safety survey form (CMS-2786R), sprinkler and standpipe ITM under NFPA 25 falls under tag K353. That tag also expects records to be kept in a secure location and readily available.

What that means for fire pumps. Under the 2011 edition, electric pumps are churn tested monthly and diesel pumps weekly. When the Joint Commission adopted the 2012 Life Safety Code in 2016, its announced changes included a monthly no-flow test for electric motor-driven fire pumps, which HFM magazine described as revised language rather than a new requirement. An earlier ASHE tool from 2014 shows weekly no-flow testing for hospitals, with monthly testing of electric pumps allowed only for facilities using a CMS categorical waiver.

Joint Commission structure. Effective January 1, 2026, the Joint Commission merged its hospital and critical access hospital Environment of Care and Life Safety chapters into a single Physical Environment chapter, according to ASHE. Confirm current standard references with your accreditor rather than relying on older EC numbering.

For the generator side, see Joint Commission and CMS emergency power compliance.

Conclusion

NFPA 20 sets a fire pump's baseline at installation, NFPA 25 requires you to keep proving it, and NEC Article 695 makes sure an electric pump has the power to do its job. Under current editions, diesel pumps are churn tested weekly for at least 30 minutes and electric pumps monthly for at least 10 minutes, or weekly in the higher-risk arrangements identified in the 2014 edition. Once a year the pump is flowed at churn, 100 percent, and 150 percent of rated flow and compared with its acceptance curve, and pumps with alternate power get a transfer test under peak load. Confirm your adopted edition, keep the acceptance test data, and track results over time. Fire pump supervisory signals are commonly monitored by the building fire alarm system, so coordinate this program with your NFPA 72 fire alarm testing.

Sources and References

• Weekly or Monthly No Flow (Churn) Tests of Fire Pumps -- National Fire Protection Association. https://www.nfpa.org/news-blogs-and-articles/blogs/2022/09/09/weekly-or-monthly-no-flow-churn-tests-of-fire-pumps
• Weekly Inspections of Electric Fire Pumps -- National Fire Protection Association. https://www.nfpa.org/news-blogs-and-articles/blogs/2021/10/08/weekly-inspections-of-electric-fire-pumps
• NFPA 25: Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems -- National Fire Protection Association. https://www.nfpa.org/codes-and-standards/nfpa-25-standard-development/25
• NFPA 20: Standard for the Installation of Stationary Pumps for Fire Protection -- National Fire Protection Association. https://www.nfpa.org/codes-and-standards/nfpa-20-standard-development/20
• The Fire Pump Flow Test: NFPA 25 Requirements for Fire Pump Tests, Part 1 -- QRFS. https://blog.qrfs.com/245-the-fire-pump-flow-test-nfpa-25-requirements-for-fire-pump-tests-part-1/
• Fire Pump Component Testing: NFPA 25 Annual Fire Pump Tests, Part 2 -- QRFS. https://blog.qrfs.com/246-fire-pump-component-testing-nfpa-25-annual-fire-pump-tests-part-2/
• NFPA 25 Highlights -- Risk Logic. https://risklogic.com/nfpa-25-highlights
• Fire Pump Flow Test Reports -- Code Red Consultants. https://coderedconsultants.com/insights/fire-pump-flow-test-reports/
• Form for Inspection, Testing and Maintenance of Fire Pumps: Diesel (NFPA 25-1998) -- Alabama Department of Public Health. https://www.alabamapublichealth.gov/facilitiesmanagement/assets/diesel_inspection_testing_form.pdf
• Inspection, Testing, and Maintenance: Fire Pumps (NFPA 25, Chapter 8) -- City of Pasadena Fire Department. https://www.cityofpasadena.net/fire/wp-content/uploads/sites/25/NFPA-Form-Fire-Pumps.pdf
• Article 695 and Fire Pumps -- Mike Holt, EC&M. https://www.ecmweb.com/national-electrical-code/code-basics/article/20901428/article-695-and-fire-pumps
• Back to Basics: Fire Pump Electrical Design Guide -- Consulting-Specifying Engineer. https://www.csemag.com/back-to-basics-fire-pump-electrical-design-guide/
• The Basics of NFPA 25 Record Keeping -- National Fire Sprinkler Association. https://nfsa.org/2021/03/08/the-basics-of-nfpa-25-record-keeping/
• Inspection and Testing of Fire Sprinklers in Healthcare Facilities -- National Fire Sprinkler Association. https://nfsa.org/2023/03/13/fire-sprinklers-in-healthcare-facilities/
• Q&A: Annual Fire Pump Test -- Brad Keyes, Healthcare Facilities Today. https://www.healthcarefacilitiestoday.com/posts/QA-Annual-fire-pump-test--14023
• S&C 16-29-LSC: Adoption of the 2012 Editions of NFPA 101 and NFPA 99 -- Centers for Medicare and Medicaid Services. https://www.cms.gov/medicare/provider-enrollment-and-certification/surveycertificationgeninfo/policy-and-memos-to-states-and-regions-items/survey-and-cert-letter-16-29
• Form CMS-2786R, Fire Safety Survey Report, 2012 Life Safety Code, Health Care (K353) -- Centers for Medicare and Medicaid Services. https://www.cms.gov/Medicare/CMS-Forms/CMS-Forms/downloads/cms2786R.pdf
• Joint Commission Rolls Out Sweeping Changes -- HFM Magazine. https://www.hfmmagazine.com/articles/2382-joint-commission-rolls-out-sweeping-changes
• Fire Safety Equipment and Fire Safety Building System Inspection, Testing, and Maintenance (2014) -- American Society for Healthcare Engineering. https://www.ashe.org/sites/default/files/ashe/fire-safety-equipment-system-inspection_hospitals.pdf
• Joint Commission Standards Receive Significant Updates -- American Society for Healthcare Engineering. https://www.ashe.org/joint-commission-standards-receive-significant-updates