Field Service Software for HVAC, Plumbing, Cleaning & Trades
Online booking, scheduling and dispatch, quotes, a technician app and invoicing for HVAC, plumbing, electrical, cleaning and other trade businesses, built around your jobs and without per-seat fees.
Built for businesses that work on site
Service businesses lose money in the gaps: calls missed while everyone is on a job, quotes that never get followed up, technicians driving across town twice, and invoices sent days late because paperwork is in the van.
Packaged field service products cover a lot of this and suit many businesses. They get expensive and awkward when you pay per technician, run unusual job types, maintenance contracts or pricing, or need the system to connect to tools the product does not support. That is where a custom system, or a custom layer on what you already use, earns its cost.
What it covers
Online booking
Customers book from your website with real availability, service areas and deposits.
Scheduling and dispatch
A drag-and-drop board by technician, skill and area, with route-aware suggestions.
Quotes and follow-up
Good-better-best quotes from templates, e-signature approval and automatic reminders.
Technician app
Job details, checklists, photos, parts used, customer signature and payment on site.
Maintenance contracts
Recurring visits generated automatically, with service history per property and asset.
Invoicing and accounting sync
Invoices raised when the job closes and synced to QuickBooks or Xero.
Packaged product or custom?
| Packaged field service app | Custom system | |
|---|---|---|
| Best when | Standard jobs and a small team | Unusual job types, contracts or pricing, or a growing team |
| Cost over time | Monthly fee per user or technician | One-off build plus hosting and maintenance |
| Fit | You adapt to the product | The system follows your process |
We compare the options honestly in Jobber vs ServiceTitan vs custom.
What it costs
DevGlim custom software projects start from $1,500. Field service systems are usually phased: booking and scheduling first, then the technician app, quotes, contracts and accounting sync.
What you always get
- You own the source code, the data and the accounts the system runs on.
- A written scope with a price and timeline per phase before work starts.
- Working software to review at every milestone, not one reveal at the end.
- Documentation, so another team could maintain the system later.
Frequently asked questions
Should a small HVAC or plumbing company build custom software?
Usually not at first. A packaged product is often the right start. Custom makes sense when per-technician fees grow, your job types or contracts do not fit, or you need integrations the product does not offer.
Can customers book online with real availability?
Yes. Booking reads technician schedules, service areas and job durations, and can take a deposit.
Can missed calls be answered automatically?
Yes. An AI voice agent can answer, collect job details and book a slot, with a handoff to a person when needed. See our AI voice agent demo.
Will it work with QuickBooks or Xero?
Yes. Invoices, payments and customers can sync to your accounting system.
Related guides and services
- Booking & Ordering Systems — Online appointment booking, class and table reservations and direct ordering for clinics, salons, gyms, restaurants, schools and service businesses, with your own branding and no commission on every order.
- Construction Software — Estimating and quoting, a CRM for leads and bids, job costing, subcontractor and site tracking for contractors and builders, replacing the estimate spreadsheets and inbox follow-ups.
- Demo: AI voice agent that answers and books calls
- AI workflow automation
- Free tool: custom vs off-the-shelf
Pricing
Custom software projects from $1,500
Final pricing depends on features, integrations, design complexity and project requirements. Complex projects are quoted based on scope.
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- A clear scope and cost range before you commit
- Fixed-scope proposal or phased estimate
- You own the code and the data
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