An operations diagnostic is a short, structured assessment — typically about one week on-site, following a short pre-diagnostic data review — where operations specialists quantify the gap between how a plant or supply chain performs today and what it’s actually capable of. It isn’t a checklist audit. It ends with a dollar figure, not a grade.
That distinction is the whole point, and it’s the part most companies get wrong.
“An operations diagnostic doesn’t tell you your company has problems. Every company has problems. It tells you which ones are worth $2 million and which ones are worth $20,000 — and it does it in about a week, not months.”
Manufacturing executive Boards are asking operators to show the math behind “operational improvement” instead of gesturing at it. PE-backed manufacturers are running tighter diligence timelines. And plenty of companies have already run a Lean assessment or a consultant’s audit that produced a binder of observations and no action plan. The term “diagnostic” is doing double duty in the market right now — some firms use it to mean a scorecard, others to mean a value-creation plan. If you’re evaluating options, the difference matters more than the price tag.
The common assumption is that a diagnostic is a maturity assessment — walk the floor, interview some managers, score the operation against a lean framework, hand over a report ranking you against “world class.” That’s an audit. It tells you where you stand. It doesn’t tell you what to do about it or what it’s worth.
A real diagnostic is built to answer a different question: specifically, precisely, what is the value on the table, and what’s the fastest credible path to it? It’s not built on opinion. It’s built on a specific method — perceptions, observations, and data, cross-checked against each other — because operators’ gut feel about where the losses are and where the data actually shows them are frequently two different places.
An audit measures you against a standard and stops. A diagnostic measures you against your own achievable performance, quantifies the dollar gap by area, and hands you a prioritized, sequenced plan to close it — ranked by EBITDA impact against difficulty to implement, not just by what’s easiest to write up.
Each consulting firm may have a different structure to their diagnostics. For TBM, we embed a small team on-site and roll it out in five connected phases across roughly a week and a half total — though scope can extend depending on the complexity of the operation and the number of sites involved a/an:
Two-day pre-diagnostic assessment of financial and operations data and human capital, conducted on-site ahead of the main week.
Identification of where value is escaping (value stream mapping, process observation, change-readiness assessment).
Quantification of that value in operational and financial terms (cost-per-unit impact, capacity impact, working capital).
Prioritization of the opportunities by EBITDA impact versus difficulty.
A go-forward implementation plan the client’s own team has already bought into, because they were in the room for the findings, not just the final readout.
Make sure the firm you are working with delivers three things. It should be built jointly with your team so there’s no “gotcha” moment when the findings land.
A $640 million, PE-backed HVAC manufacturer — four divisions and a distribution center serving the recreational vehicle market — needed to know where to focus before a 12-to-15-month exit: buy better, or spend better. TBM ran a diagnostic, one week per location across four sites, against a base cost of roughly $390 million.
validated EBITDA opportunity
(500 basis points)
estimated value creation
specific savings areas across the four sites
Every dollar was achievable within the exit timeline, because the plan was quantified and prioritized before implementation started, not discovered partway through it.
Most operational improvement programs fail for the same reason: they start with a solution before anyone quantified the actual problem. A one-week diagnostic is cheap insurance against spending a year implementing the wrong fix. The plants that skip it don’t avoid the diagnostic — they just run it informally, in real time, at full implementation cost, without the guardrails.
TBM’s Operations Diagnostic applies this exact process — about one week on-site per location, following a brief pre-diagnostic review, and a quantified opportunity list you can act on immediately. Schedule Your TBM Operations Diagnostic →
Schedule a 15-minute call with your Advisor
Operational Excellence
Don’t miss industry expert insights.
Join a community committed to excellence.
