First-time fix rate
First-time fix rate is the percentage of service jobs a technician completes correctly on the first visit, with no return trip for the same reported issue within a defined follow-up window — the inverse view of callback rate.
The inputs.
- First-visit closuresJobs closed without a related return visit within the tracked window.
- Total jobsJobs completed in the period, including return visits on earlier work.
- Mirror metricCallback rate counts the jobs that needed the return visit.
What to know.
How to calculate first-time fix rate
First-time fix rate equals jobs closed on the first visit without a related return visit, divided by total jobs completed in the period. The follow-up window and the definition of "related" are policy choices you set — typically 30 to 90 days, and the return visit must be against the same equipment and the same reported issue rather than any subsequent call from the same customer. Jobs scoped as planned multi-visit work from the start are excluded. It's the mirror of callback rate, so the two numbers tell the same story from opposite sides.
Why first-time fix rate matters for commercial contractors
A return trip costs a second dispatch, a second technician-hours line, and often a second set of parts — all against the same invoice or the same agreement-covered visit. On a book of 10 to 200 techs, a few points of first-time fix swing directly into margin, and it's one of the clearest signals a commercial customer's facilities team uses to judge whether a contractor is reliable enough to keep on a multi-site agreement. A facilities manager who sees the same rooftop unit called back repeatedly will bring it up at renewal even when every individual visit ran on time.
What drives first-time fix rate
The biggest levers are parts availability — showing up with the right part the first time instead of diagnosing, leaving, and returning — accurate skill-to-job matching at dispatch, and visibility into the equipment's service history so the technician isn't diagnosing blind. All three depend on the technician having real data in hand before or during the visit rather than a one-line work order description.
How Thermal tracks first-time fix rate automatically
Thermal links every work order outcome back to the specific equipment record, so a return visit against the same unit within your configured window is detected automatically instead of relying on someone to notice the pattern. That same equipment record carries prior service history and installed parts to the technician before the visit, which is the data first-time fix rate actually depends on.
Questions attached to this term.
How is first-time fix rate different from first call resolution rate?
They're close enough that many shops use the terms interchangeably — both count jobs closed successfully on the first visit. First call resolution rate tends to emphasize the resolution of the reported problem, while first-time fix rate emphasizes the repair holding; the underlying event is the same.
Does first-time fix rate count planned multi-visit work?
No — visits that were only ever scoped as multi-visit, like a phased project, aren't counted as failures, since a second visit was always part of the plan rather than a missed first visit.
What's a good first-time fix rate benchmark?
There's no single defensible figure — it varies by trade, equipment mix, and parts strategy. Track it as a trend against your own baseline rather than an external target.
How does parts stocking affect first-time fix rate?
Directly — a large share of return trips trace back to a technician not having the right part on the truck, which is why inventory visibility at dispatch time matters as much as technician skill.
These numbers, on your own book.
If you want to see them calculated from real work orders and agreements rather than a spreadsheet, that's a demo.