CMMS vs field service software: CMMS or field service software? Which you need when you maintain your customers’ equipment
A CMMS is built around machines. Field service software is built around jobs and invoices. If you maintain customer equipment on a schedule, the machine record is the thing you can’t lose, so start from that: a history per machine and its next due date. Then check that the tool also gives you customers, sites, signed reports and a portal your customers can use.
The 30-second test
Five yes-or-no questions. They point to one of three answers: a CMMS for your own equipment, a job-and-invoice field service tool, or a CMMS built for service crews. The first two questions do most of the work.
Answer all five questions to see which kind of tool fits.
The three possible results
A CMMS built for service crews
You go back to the same customer machines, so each machine’s service history and next due date are what you cannot lose. Look for a maintenance system with a record per machine plus a customer layer: customers and sites, signed service reports and a portal or tracking link. Catalyces is built this way.
Catalyces for field crewsCustomer portal and tracking linksPricingA job-and-invoice field service tool
Your work is mostly one-off jobs at customer sites, and billing matters most. A field service tool built around booking, dispatch, quotes, invoices and payments fits best. You lose little by not having a record per machine, because you rarely see the same machine twice.
How field crews run jobs in CatalycesA CMMS for in-house maintenance
You look after equipment you own, so a classic CMMS fits: an asset register, preventive maintenance plans, work orders and a parts store. You do not need dispatch to customer sites or customer sign-off. Compare on what the plan includes and how it is priced as your team grows.
Maintenance software for asset teamsWhat a CMMS costs by crew size
What a CMMS does, and what it was built for
A CMMS, or computerized maintenance management system, keeps a register of equipment. Each machine gets a record: what it is, where it sits, its service history and its preventive maintenance plan. Work orders are raised against the machine, parts come out of a store, and the system tells you what is due next week.
Most CMMS tools were built for a factory, a hospital or a building that the buyer owns. The maintenance team works for the same company as the machines. So a classic CMMS often has little idea of a customer: customer sites, customer sign-off and a portal where someone outside the company sees their own jobs are missing, added later, or kept for higher tiers. It also tends to charge per user, which gets expensive as a crew grows. Our CMMS pricing guide shows what that adds up to for 3, 10 or 20 people.
What field service software does, and what it was built for
Field service management software, or FSM, is built around the customer and the job. A customer calls or books online, the office sends a tech, the tech does the work, and the customer gets an invoice and pays. The core is booking, dispatch, scheduling and routing, quotes, invoices and payments, plus the messages that keep the customer informed along the way. Jobber, Housecall Pro and ServiceTitan are examples of this kind of job-and-invoice tool.
That makes FSM a strong fit for one-off work: a repair call, an install, a cleaning job. The thing the system remembers best is the customer and what you billed them. What it may remember less well is the machine itself, because many of these tools were not designed around equipment you will see again.
The gap: maintaining equipment you don’t own
Most guides draw a clean line. A CMMS is for equipment you own. Field service software is for jobs at customer sites. Many companies use both. But a lot of service businesses sit right on that line: an HVAC contractor with a hundred rooftop units under contract, a generator crew servicing standby sets every quarter, a team keeping a hotel’s kitchen or a gym’s machines running. The equipment belongs to the customer, and the work repeats on the same machines.
Why job-first tools can lose machine history
In a job-first tool, the job is the main record. Equipment details often go into notes or custom fields on the job, or on the customer’s property. That is fine until the next visit. The tech who opens the job sees the address and the customer, but not a clean list of what was done to this unit, which parts went in, and when it is next due. So they search old jobs, call the office, or start from scratch.
Before you pick a job tool for recurring maintenance, open a customer in the trial and ask one question: can I see every service on this one machine, in order, with the next one already scheduled?
Why a plant-first CMMS can feel wrong for contractors
A CMMS gets the machine record right, but it often stops there. Customers and sites may be missing, or bolted on. Customer sign-off and a request portal often sit on a higher tier, sometimes quote only. And per-user pricing means every tech and office person you add raises the bill. If you are weighing a per-seat CMMS, see how Catalyces compares with MaintainX and with UpKeep, and check the tier you would need in the pricing guide.
What a service crew actually needs
Use this list on every tool you trial, whatever it calls itself. Tick each line only if you saw it working with your own jobs, not on a feature page.
| You need | Why it matters | In Catalyces |
|---|---|---|
| An equipment record per customer machine, with its history | The next visit starts from what was done last time, not from scratch. | Yes, with daily status |
| Preventive maintenance plans per machine | Services come due on their own instead of living in someone’s head. | Yes, calendar-based |
| Parts issued and returned per job | Job costs are right and stock is where you think it is. | Yes |
| Checklists and signed service reports | Proof the work was done, signed by the customer on site. | Yes, as a PDF |
| A customer portal or tracking link | Customers check progress without calling you. | Yes, both |
| Quotes | Price the repair you found on the service visit. | Yes, with landed-cost pricing |
| A team schedule and map | Send the next job to whoever is closest. | Yes |
| Flat or per-seat pricing | Per-seat bills grow with every hire; flat ones do not. | Flat, $78 a month |
| Invoicing, in the tool or exported | Someone has to send the bill and collect the money. | Exported to your accounting software |
See the parts that matter most for service crews: work orders and signed reports, parts inventory, quotes and purchasing and the customer portal.
Three ways to set it up
Whatever you pick, someone has to keep the machine history, run the jobs and send the invoices. These are the three common ways to split that work.
| Setup | How it works | Good for | Watch out for |
|---|---|---|---|
| A job tool only | One field service tool for booking, dispatch, quotes, invoices and payments. | One-off jobs where getting paid fast matters most. | Machine history may sit on the job or the client, so each visit can start from scratch. |
| A job tool plus a CMMS | Jobs and invoices in one system, machines and PM plans in another. | Larger teams with someone to keep the two in step, or an integration between them. | The same job is entered twice, two bills, and two places to look when a customer calls. |
| One maintenance system with a customer layer | Machines, PM, jobs, parts, signed reports and a customer portal in one place. Invoices go out from your accounting software. | Crews that service the same customer machines on a schedule. | Invoicing and payments happen in a second tool, fed by an export. |
For a small crew, the second setup is usually the costly one. It is not the two bills; it is the double entry. The same job goes into two systems, and when a customer calls, the answer is in whichever one somebody updated last. If your work is recurring maintenance, the third setup keeps everything about the machine in one place and lets your accounting software do what it already does well.
Where Catalyces fits, and when it doesn’t
Catalyces is a maintenance system with a customer layer. Every customer machine gets a record with its full history and daily status. Preventive plans create the jobs. Parts are issued and returned per job. Techs work through checklists and close the job with a PDF service report the customer signs on site. Customers log in to an invite-only portal to see their jobs, equipment and locations, send requests with photos and sign off work, or follow a no-login tracking link.
It fits when
- You service the same customer machines again and again.
- You are a small or mid-size crew, from a few people to a few dozen.
- You want one flat price for the whole team: $78 a month, or $39 for founding members, with unlimited users.
- Your customers want signed reports and a way to see their jobs and equipment.
It doesn’t fit (yet) when
- You need invoicing and card payments inside the same tool. Catalyces exports to your accounting software instead.
- You need preventive maintenance triggered by meter readings or run hours. Plans are calendar-based today.
- You need a native iPhone or Android app today. Catalyces runs in any phone browser; native apps are coming soon.
- You need route optimization, or online booking for homeowners.
The price is $78 a month for the whole team, with unlimited users, or $39 a month for the first 10 teams. Try it free for 7 days with no card. Read more on the page for field crews, or, if the equipment is your own, the page for asset teams. Crews use it for HVAC, generators and power, equipment rental, facilities, property maintenance, restaurant kitchens and gyms.
Not ready to choose software? Start with a free maintenance checklist for your next service visit.
CMMS or field service: questions, answered.
You look after the machines. We’ll look after the paperwork.
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