Free E-book /For Facilities Leaders
The schedule is
written. The signal is missing.
Why the PM schedule isn't enough, and what your CMMS needs to spot failure before it happens. A field guide built on what facilities crews actually say.
Built on 129 threads from ten forums where facilities staff talk, and on 2025–2026 surveys from FMX, MaintainX, IFMA and SFG20.
SENSORHUBB
For Facilities Leaders · A SensorHubb E-book
The Missing
Signal
Why the PM schedule isn't enough, and what your CMMS needs to spot failure before it happens
Free PDF
15 pages · 10 chapters
0%
of maintenance leaders run a preventive maintenance program
MaintainX 2026
0%
of teams spend under 40% of their time on planned work
MaintainX 2026
0%
saw unplanned downtime hold steady or rise in the last 12 months
MaintainX 2026
0
crew threads read across ten public forums, Aug–Oct 2026
SensorHubb forum review
The gap between rounds
Both PM rounds said normal. The asset didn't wait for them.
A schedule says when someone planned to look at an asset. It can't say what the asset is doing now. SensorHubb learns each asset's normal in 7 to 10 days, then watches for drift against it, so the repair lands on the schedule instead of the emergency column.
One walk-in freezer, one month
Illustration of the idea, not customer data. How early drift shows depends on the asset and how it fails.
Field Example · Chapter 5
0%
slower recovery after each disturbance, measured against the freezer's own baseline.
The freezer that looked fine.
At a life-sciences site, an ultra-low freezer at −80°C held its average within half a degree for 30 days. On a temperature chart, it looked healthy. But each time it was disturbed, it took far longer to pull back down than its own baseline said it should.
The average said healthy. The behavior said the refrigeration system was working harder to hold temperature.
Anonymized SensorHubb platform data
The view from the boiler room
Ten problems crews raise on their own. We graded ourselves on every one.
We read 129 threads started between Aug 25 and Oct 24, 2026 on ten public boards, ranked each problem by how many threads raise it, and said plainly where SensorHubb solves, helps, or doesn't.
Contractors and vendors let them down
Budget says no; equipment runs past its life
Too few people, too many buildings
Building controls nobody understands
Training gaps; knowledge lives in one head
Pay, respect and on-call
Parts and equipment take months to arrive
Work-order and CMMS problems
Nobody watching when the building is empty
Manual readings and logs leave gaps
2
SOLVES
The empty building, and manual readings and logs.
7
HELPS
Contractors, budget, staffing, controls, training, parts and work orders.
1
NOT OURS
Pay. Earlier warning can turn some midnight calls into planned visits. It can't make on-call fair.
How SensorHubb closes the loop
An alert says something changed. A closed loop proves it was fixed.
Measure
Sensors and building systems report what each asset is doing, continuously. Nobody types.
Learn
The platform learns each asset's normal baseline in 7 to 10 days.
Predict
Predictive analytics catch drift and anomalies against that baseline and spot failure before it happens.
Act
SensorHubb opens the work order in your integrated CMMS, with the asset, the readings and the time attached.
Verify
After the repair, it reads the work history back and checks that readings returned to baseline.
Lands in the CMMS you already run:
Inside the guide
Ten chapters. From the data to a pilot you can run this quarter.
Plus a full account of the evidence and its limits: every survey, every forum, and all 129 threads counted, by board.
“Neither the surveys nor the forums describe a team that needs to work harder. Both describe a team missing information the asset could supply.”
The Missing Signal, Chapter 6
THE PLAN AND THE WORK
Most teams have a PM program. The breakdowns still win.
WHAT THE GAP COSTS
Downtime isn't falling.
THE RECORD
The record nobody has time to keep
THE CMMS
The CMMS records the work. It can't see the asset.
AI
AI is arriving. Crews want answers they can check.
THE VIEW FROM THE BOILER ROOM
Ten problems facilities crews raise on their own
THE SKEPTICS' TESTS
Buy a record you can check, not a promise.
HOW SENSORHUBB CLOSES THE LOOP
An alert says something changed. A closed loop proves it was fixed.
FROM FINDING TO CAPABILITY
Six findings point at one gap. Here is what fills it.
FIND YOUR MISSING SIGNAL
Ask five questions. Start with three assets.
Chapter 7 · The skeptics' tests
Buy a record you can check, not a promise.
Seven questions straight from the crews, with our answers. Put them to any vendor, us included, and run them on three assets before you trust it with thirty.
Will the alert reach a person?
Will it cry wolf?
Can I trust the number?
Doesn't my BAS do this?
Will the vendor answer after the install?
Does it fix anything?
What if the baseline learned a sick machine?
Get your free copy
Find your missing signal.
The Missing Signal, Version 2.0. A field guide for facilities and operations leaders who run buildings, a crew and a CMMS.
The data behind the gap between PM programs and planned work
A ranked, honest scorecard of the ten problems crews raise most
Seven skeptics' tests to put to any monitoring vendor
A five-question, three-asset pilot you can scope this quarter