If you manage commercial property on the Front Range, you have probably heard “NFPA 25” more times than you care to count. It is the standard that governs how your fire sprinkler system gets inspected, tested, and maintained. A new edition comes out every three years. The 2026 edition is the one that matters right now — and it carries several changes that will affect your next inspection, your service contract, and potentially your insurance coverage.
Here is what changed, what it means for your building, and what to do before your next scheduled inspection.
Why This Edition Matters Right Now
NFPA 25 is adopted by fire code authorities across Colorado, including Denver, Aurora, Boulder, and Fort Collins. Each new edition becomes the enforceable baseline once local Authorities Having Jurisdiction (AHJs) adopt it. Most Front Range jurisdictions adopt new editions on a rolling basis, meaning the 2026 updates will work their way into local enforcement over the next 12 to 18 months.
That is a short runway. Getting ahead of these requirements now means your next annual inspection will not surface surprises — and you will not be racing to schedule corrective work before a certificate renewal deadline.
Dry Pipe and Deluge Valves: New Annual Internal Inspection
This is the change that will affect the most commercial buildings in Denver.
Under the 2026 edition, all dry pipe valves, pre-action valves, and deluge valves must receive annual internal inspections. Previously, internal inspections were required on a less frequent cycle for many of these valve types. The new requirement applies every year.
What does that mean in practice? A qualified technician must open, inspect, and document the internal condition of these valves — checking for corrosion, debris, proper seating, and seal integrity. This is a more involved process than the external visual check that most property managers are used to seeing on inspection reports.
If your building has a parking garage, a cold storage area, or any space with a dry or pre-action system — which is common in Front Range commercial buildings given freeze exposure — this change applies to you directly. Budget for additional labor time on your next service visit and confirm with your contractor that internal valve work is included in their scope.
Corrosion Mitigation Systems Are Now Enforceable
Corrosion inside sprinkler pipe is a slow but serious problem. Oxygen and bacteria eat steel pipe from the inside, creating pinhole leaks and eventually compromising system integrity. Over the past decade, corrosion mitigation systems — nitrogen generators, oxygen scavengers, air venting devices — have become standard on new commercial installations in Colorado.
But maintaining those systems has been effectively voluntary under previous editions. Not anymore.
The 2026 edition explicitly makes corrosion mitigation systems subject to required inspection and testing under NFPA 25. If your building has one, it must now be included in your Inspection, Testing, and Maintenance (ITM) scope and documented in every service report.
If you are not sure whether your building has a corrosion mitigation system, ask your service contractor to confirm during your next visit. If you do not have one and your system is more than ten years old, it is worth a conversation about whether adding one makes sense. Pipe corrosion is one of the leading causes of sprinkler system failures in Colorado’s climate.
Colorado Freeze Events: A New Inspection Protocol
This one was written for buildings like yours.
Colorado’s freeze-thaw cycles are hard on fire sprinkler systems. A sustained cold snap — especially in unheated spaces like parking structures, mechanical rooms, and loading docks — can freeze water inside pipe. Ice plugs crack fittings and split pipe walls. The damage is not always visible until the system is pressurized.
The 2026 edition establishes a formal inspection protocol specifically for the period following a freeze event. When temperatures drop low enough to create ice risk inside a building’s fire protection system, property owners are now expected to have the system evaluated. This includes hydrostatic testing or ultrasonic evaluation of suspect pipe sections to confirm the system has not been compromised by ice damage.
This is not just a compliance checkbox. A sprinkler system that looks intact after a hard freeze may have a hairline crack in a fitting that will fail the next time the system is called into service. Catching that now, when it is a maintenance call, is far better than discovering it during an actual fire event.
If post-freeze inspections are not already part of your building’s operating procedures, the 2026 edition gives you a clear framework — and a defensible reason to schedule the work before your insurer asks about it.
Sprinkler Head Age: The 50-Year Threshold
The 2026 edition also addresses older sprinkler heads. Sprinklers that have been in service for 50 years or more must either be replaced with new fast-response heads, or pass a thermal sensitivity test confirming the head still meets response performance requirements.
For many Denver commercial buildings constructed in the 1970s and 1980s, this is a real consideration. If your building has never had a full sprinkler head replacement and the system dates to original construction, it may be approaching or past that threshold.
Your ITM contractor should be tracking installed dates in your service records. If they are not, that is worth addressing. Knowing the age of your heads is basic asset management — and under the 2026 edition, it directly affects your compliance status.
What This Means for Your Building
Before your next annual inspection, review these four items with your service contractor:
- Confirm that dry pipe, pre-action, or deluge valve internal inspections are included in their scope.
- Ask whether any corrosion mitigation equipment on-site will be included in the service order and documented.
- Establish a procedure for post-freeze inspections during winter months, specifically for unheated or partially heated areas.
- Verify that your service records include sprinkler head installation dates.
Getting ahead of these changes takes one conversation with your contractor. Dealing with them as deficiencies on an inspection report — with a deadline to correct — takes considerably more.
Elevation Fire Protection provides NFPA 25 inspections and testing across Denver, Aurora, Boulder, Fort Collins, and Cheyenne. Our reports are formatted for AHJ submission and accepted by major commercial insurance carriers. If you want to talk through how the 2026 updates apply to your building specifically, call us at (720) 382-9669.