- 1. HOW IT WORKS
- 2. Sync all your customers, invoices, and payments
- 3. Connect your package
- 4. Invoice your jobs
- 5. Leave it to sync
- 6. SUPPORTED INTEGRATIONS
- 7. All major accounting platforms integrate with GES
- 8. Xero
- 9. QuickBooks
- 10. Sage
- 11. ALL-IN-ONE
- 12. Work in one place and keep your books in order
- 13. TRY GES FOR FREE
- 14. Make GES your all-in-one system to run your business
- 15. All-In-One Software For Heating & Plumbing Businesses
- 16. WIN MORE JOBS
- 17. Quotes & Estimates
- 18. GO PAPERLESS
- 19. Records & Certificates
- 20. GET PAID FASTER
- 21. Invoices & Payments
- 22. WORK FASTER ON SITE
- 23. Tools & Calculators
- 24. 2,300+ MANUALS
- 25. Boiler Manuals & AI Assist
- 26. CONNECT YOUR APPS
- 27. Integrations
- 28. STAY ORGANISED
- 29. Scheduling & Calendar
- 30. GET REPEAT BUSINESS
- 31. Automated Reminders
- 32. STREAMLINE WORK
- 33. Job Management
- 34. CRM SOFTWARE
- 35. Customer Management
- 36. EASY ACCESS CONTROL
- 37. User Management
- 38. LOOK PROFESSIONAL
- 39. Custom Workflows
- 40. Frequently asked questions
- 41. Make your job easier withGas Engineer Software
- 1. HOW IT WORKS
- 2. Sync all your customers, invoices, and payments
- 3. Connect your package
- 4. Invoice your jobs
- 5. Leave it to sync
- 6. SUPPORTED INTEGRATIONS
- 7. All major accounting platforms integrate with GES
- 8. Xero
- 9. QuickBooks
- 10. Sage
- 11. ALL-IN-ONE
- 12. Work in one place and keep your books in order
- 13. TRY GES FOR FREE
- 14. Make GES your all-in-one system to run your business
- 15. All-In-One Software For Heating & Plumbing Businesses
- 16. WIN MORE JOBS
- 17. Quotes & Estimates
- 18. GO PAPERLESS
- 19. Records & Certificates
- 20. GET PAID FASTER
- 21. Invoices & Payments
- 22. WORK FASTER ON SITE
- 23. Tools & Calculators
- 24. 2,300+ MANUALS
- 25. Boiler Manuals & AI Assist
- 26. CONNECT YOUR APPS
- 27. Integrations
- 28. STAY ORGANISED
- 29. Scheduling & Calendar
- 30. GET REPEAT BUSINESS
- 31. Automated Reminders
- 32. STREAMLINE WORK
- 33. Job Management
- 34. CRM SOFTWARE
- 35. Customer Management
- 36. EASY ACCESS CONTROL
- 37. User Management
- 38. LOOK PROFESSIONAL
- 39. Custom Workflows
- 40. Frequently asked questions
- 41. Make your job easier withGas Engineer Software
XERO / QUICKBOOKS / SAGE
Keep your jobs and accounts perfectly in sync
Connects with the accounting software you already use 
HOW IT WORKS
Sync all your customers, invoices, and payments
GES provides heating & plumbing businesses one place to handle all their work. Your invoices, customers, and payments connect to all your jobs, but also sync to your accounting platform for Making Tax Digital.
Connect your package
Open Integration Settings, pick Xero, QuickBooks or Sage and authorise. Takes a couple of minutes.
Invoice your jobs
Raise your invoices, add customers, and log payments through Gas Engineer Software.
Leave it to sync
Customers, invoices and payments appear in your accounts automatically, without manual data entry.
"The integration with QuickBooks was seamless. Time-saving software that helps keep me on track. "
SUPPORTED INTEGRATIONS
All major accounting platforms integrate with GES
Setup is a quick and simple process, done through the GES settings after creating an account.
QuickBooks
Push new customers, invoices and payments through to QuickBooks automatically.
Read the setup guide Sage
Keep Sage up to date with every job you invoice and every payment you take.
Read the setup guideALL-IN-ONE
Work in one place and keep your books in order
You need accounting software to keep your finances in order and for Making Tax Digital. But these platforms don’t help manage your jobs, resulting in a lot of back-and-forth…
GES solves that by giving you one place to work and the best of both worlds.
- No double entry — Create your invoices in GES, then let it sync over.
- MTD ready — With all your payments and invoices synced over, your quarterly updates are much quicker.
- Run the whole job from Gas Engineer Software
TRY GES FOR FREE
Make GES your all-in-one system to run your business
Try GES for free in a 14-day trial.
- Test integrations during trial
- Certificates, invoices & more
- Free onboarding call included
- No credit card required
TRUSTED BY 7,000+ UK HEATING BUSINESSES
★★★★★
Based on 1500+ reviews
ALL FEATURES
All-In-One Software For Heating & Plumbing 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.
Frequently asked questions
Got a question we haven't covered? Talk to our team.
Which accounting packages does Gas Engineer Software connect to?
Three of the most widely used UK packages: Xero, QuickBooks and Sage. You just connect the one your books already live in.
What information syncs across to my accounts?
The customers, invoices and payments you create on a job carry across to your accounting package on their own, so your books stay up to date without any re-typing.
How do I connect my accounting software?
On the web portal, click the cog icon next to your profile name, choose "Manage" under Integration Settings, pick your package and authorise the connection. It only takes a couple of minutes, and our help guides walk you through each one.
Is it compatible with Making Tax Digital (MTD)?
Yes. Everything you invoice in GES is already digital and flows into Xero, QuickBooks or Sage, so you keep MTD-ready records as you work.
Will I have to enter anything twice?
No, that's the whole point. Raise the invoice once on the job and it's already in your accounts, so there's no double entry and far less chance of a typo creeping in.
Can I switch packages or disconnect later?
Yes. Connect the package you use now, and if you move to a different one down the line you can disconnect it and connect the new one.
Will it change the way I invoice?
Not at all. You carry on raising invoices and logging payments exactly as you do now, and the sync happens quietly in the background.
Do I still need my accountant?
It doesn't replace your accountant, it makes their job easier. Your figures are already in Xero, QuickBooks or Sage and kept up to date, so there's less tidying up at month or year end.
Make your job easier with
Gas Engineer Software
Efficient quoting, scheduling & certificates. All in one place.
GES helps you manage your heating & plumbing business and save hours each week on admin and paperwork.