- 1. A plumbing job from start to finish with GES
- 2. Manage all your plumbing jobs with GES
- 3. Build professional plumbing quotes & esimates
- 4. Certificates, past notes, and more, in your pocket
- 5. Generate an invoice and get paid
- 6. Sync your customers, invoices, and payments
- 7. On your own, or part of a team?
- 8. Just you and the van?
- 9. Running a small team from the van?
- 10. Engineers and office staff?
- 11. FREE 14-DAY TRIAL
- 12. Try GES on your next job
- 13. Built for UK plumbing & heating businesses
- 14. WIN MORE JOBS
- 15. Quotes & Estimates
- 16. GO PAPERLESS
- 17. Records & Certificates
- 18. GET PAID FASTER
- 19. Invoices & Payments
- 20. WORK FASTER ON SITE
- 21. Tools & Calculators
- 22. 2,300+ MANUALS
- 23. Boiler Manuals & AI Assist
- 24. CONNECT YOUR APPS
- 25. Integrations
- 26. STAY ORGANISED
- 27. Scheduling & Calendar
- 28. GET REPEAT BUSINESS
- 29. Automated Reminders
- 30. STREAMLINE WORK
- 31. Job Management
- 32. CRM SOFTWARE
- 33. Customer Management
- 34. EASY ACCESS CONTROL
- 35. User Management
- 36. LOOK PROFESSIONAL
- 37. Custom Workflows
- 38. Plumbing software: common questions
- 1. A plumbing job from start to finish with GES
- 2. Manage all your plumbing jobs with GES
- 3. Build professional plumbing quotes & esimates
- 4. Certificates, past notes, and more, in your pocket
- 5. Generate an invoice and get paid
- 6. Sync your customers, invoices, and payments
- 7. On your own, or part of a team?
- 8. Just you and the van?
- 9. Running a small team from the van?
- 10. Engineers and office staff?
- 11. FREE 14-DAY TRIAL
- 12. Try GES on your next job
- 13. Built for UK plumbing & heating businesses
- 14. WIN MORE JOBS
- 15. Quotes & Estimates
- 16. GO PAPERLESS
- 17. Records & Certificates
- 18. GET PAID FASTER
- 19. Invoices & Payments
- 20. WORK FASTER ON SITE
- 21. Tools & Calculators
- 22. 2,300+ MANUALS
- 23. Boiler Manuals & AI Assist
- 24. CONNECT YOUR APPS
- 25. Integrations
- 26. STAY ORGANISED
- 27. Scheduling & Calendar
- 28. GET REPEAT BUSINESS
- 29. Automated Reminders
- 30. STREAMLINE WORK
- 31. Job Management
- 32. CRM SOFTWARE
- 33. Customer Management
- 34. EASY ACCESS CONTROL
- 35. User Management
- 36. LOOK PROFESSIONAL
- 37. Custom Workflows
- 38. Plumbing software: common questions
How UK plumbers use Gas Engineer Software
From paperless records to quotes, invoices, and scheduling jobs, Gas Engineer Software (GES) is everything a plumber needs to run their day.
★★★★★★★★★★ 4.7 
★★★★★★★★★★ 4.4 
★★★★★★★★★★ 4.8 
A plumbing job from start to finish with GES
GES is the all-in-one plumbing job management software trusted by 7,000+ UK businesses. Manage your customers, jobs, and team in one app with scheduling, quoting, invoicing, records, reminders, and more. Click on any for more detail.
Scheduling, routing, and any past notes available
Put together a quote in minutes, on-site or before you visit
GES works offline. Anything you create or edit syncs later
Invoice the job and have the customer pay
Sync payments & invoices to accounting software
Manage all your plumbing jobs with GES
Full job and customer management for plumbers, from the web portal or app for plumbers. Open the app and see today’s jobs, with the address, what needs doing, and what you did there last time.
- Complete job history in a few taps, including quotes, invoices and photos
- Site notes saved against the property and customer
- Sync GES events to your personal calendar
- Easy routing with Google or Apple Maps
Build professional plumbing quotes & esimates
Build a quote or estimate from templated line items before you turn up or after an initial visit, and get it sent out on the same day.
- Template line items to help you put together an itemised quote fast
- Send a PDF to your customer and file it against the job
- Accepted plumbing quotes can be converted into an invoice without retyping
- Track quote statuses in real time see what's accepted and what needs following up
Quote #Q-1428
Whitfield Plumbing
Issued 22/11/2026 · valid 30 days
Customer
Mrs P. Raman · 41 Ashgrove Terrace, Leeds LS8
Quoted work
Certificates, past notes, and more, in your pocket
Know the full story and any past work you've done on a property in seconds, plus the whole range of heating & plumbing records.
- Works offline. Create certificates, add photos, and take notes even with no signal
- Heating & plumbing certificates including Unvented Hot Water Cylinder Records
- Create and update job sheets on the go
- Save appliance details to the job address
Generate an invoice and get paid
Convert the quote into an invoice on the doorstep and take payment before you’re back in the van.
- Instant quote to invoice conversion
- Easy payments for your customers through a link or QR code
- GES invoices get paid 64% faster on average with payment reminders
Sync your customers, invoices, and payments
Every plumbing job you invoice and get paid for needs to be recorded for MTD. GES makes the process easy with accounting integrations.
- Sync to Xero, QuickBooks, or Sage
- Track invoice payment statuses in GES
- Keep your books up to date for quarterly MTD updates
- No manual data entry for customers, invoices, and payments.
On your own, or part of a team?
All-in-one software made for heating & plumbing businesses. GES helps sole traders, engineers part of large teams, and everyone in between.
FREE 14-DAY TRIAL
Try GES on your next job
Build OFTEC certificates, issue invoices, add jobs, and much more. All features available, no card details required.
CORE FEATURES
Built for UK plumbing & heating businesses
WIN MORE JOBS
Quotes & Estimates
Create winning quotes in minutes with template line items. Then, convert them to invoices in one click.
GO PAPERLESS
Records & Certificates
All gas industry certificates. In your pocket, for every job.
GET PAID FASTER
Invoices & Payments
Convert quotesto invoices. Complete with easy & low-fee digital payments.
WORK FASTER ON SITE
Tools & Calculators
Gas rate, pipe sizing and more — built into the app, working offline and feeding straight into your certificates.
2,300+ MANUALS
Boiler Manuals & AI Assist
Get any information you need about a boiler in seconds with the GES app.
CONNECT YOUR APPS
Integrations
Save time by sending data to your accounting software and connecting to your analyser.
STAY ORGANISED
Scheduling & Calendar
Manage your jobs & team in one place.
GET REPEAT BUSINESS
Automated Reminders
Send service reminders & chase late payers — without lifting a finger.
STREAMLINE WORK
Job Management
Keep everything together with an activity history for all customers.
CRM SOFTWARE
Customer Management
Keep all of your customer details tidy & in one place.
EASY ACCESS CONTROL
User Management
Give users access to what they need.
LOOK PROFESSIONAL
Custom Workflows
Add your logo to your records, create custom job statuses, and more.
Plumbing software: common questions
Anything we haven’t covered? Talk to our team.
It’s called Gas Engineer Software. Is it any use to a plumber?
Yes. Gas Engineer Software is focused purely on the plumbing and heating industry. It's an all-in-one plumber app that helps with everything from scheduling to quoes, keeping job histories, invoices, payments, and paperwork like job sheets and Unvented Hot Water Cylinder records. The gas and oil records are there if you need them, and out of the way if you don’t.
Can I quote from the app?
You can build a quote from templated line items on your phone and send it before you leave. Quotes have statuses so you can easily keep track of what's accepted and what needs following up, and an accepted quote can be converted into an invoice at the click of a button.
What happens when there’s no signal?
The app is offline-first. Photos, notes and paperwork save to the phone and sync as soon as you’re back in range, so a job in a property without reception doesn't mean extra catch-up paperwork later in the day.
Does it handle the records I do issue?
Unvented hot water cylinder records, Legionella risk assessments and minor electrical works records are all in there, alongside job sheets, quotes and invoices. There is also the complete range of gas and oil certificates if you are Gas Safe or OFTEC registered.
Does it work for a one-man band?
Many GES users are sole traders or small teams. It's quick and easy to set up, and we can help with importing a list of current customers. See how it works for sole traders.
How long is the trial, and do you need a card?
Once you start your trial, you have 14 days with access to every feature. No card details are required to start the trial. If it doesn’t suit the way you work, do nothing and it stops.