- 1. HOW IT WORKS
- 2. Set up once, then get paid easier than ever
- 3. Switch on Crezco payments
- 4. Send the invoice
- 5. Customer pays, cash lands
- 6. EASY PAYMENTS
- 7. A QR code and payment link on every invoice
- 8. Payment fees compared
- 9. SIMPLE, LOW FEES
- 10. £1 flat fee for every job, no matter the invoice size
- 11. TRY GES FOR FREE
- 12. Create certificates, issue invoices, and process payments
- 13. All-In-One Software For Heating & Plumbing 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. Frequently asked questions
- 1. HOW IT WORKS
- 2. Set up once, then get paid easier than ever
- 3. Switch on Crezco payments
- 4. Send the invoice
- 5. Customer pays, cash lands
- 6. EASY PAYMENTS
- 7. A QR code and payment link on every invoice
- 8. Payment fees compared
- 9. SIMPLE, LOW FEES
- 10. £1 flat fee for every job, no matter the invoice size
- 11. TRY GES FOR FREE
- 12. Create certificates, issue invoices, and process payments
- 13. All-In-One Software For Heating & Plumbing 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. Frequently asked questions
EASY DIGITAL PAYMENTS
Take payments on-site without the card reader or fees
HOW IT WORKS
Set up once, then get paid easier than ever
Connect Crezco with GES in your integrations settings, then each invoice you generate will have a QR code and payment link for your customer to send you the money. Read the setup guide.
Switch on Crezco payments
From Integration Settings, connect your GES account to Crezco. It's a one-time setup that takes a few minutes.
Send the invoice
Raise and send the invoice as normal, and it automatically includes a QR code and payment link for the customer.
Customer pays, cash lands
They pay from their banking app and the money goes straight to your account, with no card machine and a low £1 fee for all invoice amounts.
"The integration with QuickBooks was seamless. Time-saving software that helps keep me on track. "
EASY PAYMENTS
A QR code and payment link on every invoice
Both are automatically included on any invoice you create in GES with Crezco active. The customer chooses what’s easiest for them, is redirected to their banking app, and can process the payment then and there.
- It's convenient for your customer. The amount and your bank details are already sorted for them.
- There's no need to buy and carry a card machine
- You get paid on the spot, without high fees
Payment fees compared
*Larger invoices will save even more
Competitor rates are standard published online/invoice card rates (August 2026) and may change.
SIMPLE, LOW FEES
£1 flat fee for every job, no matter the invoice size
Crezco does things a little differently to popular card reader and payment companies like SumUp. Instead of charging you a % of your invoice, it’s just a flat £1 fee.
- £1 per invoice, whether it's £80 or £5000
- Instant payments without the cost
- Cheaper on any invoice over ~£50 (rates vary)
TRY GES FOR FREE
Create certificates, issue invoices, and process payments
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.
What is Crezco?
Crezco is the open banking provider that powers payments in Gas Engineer Software. Open banking lets your customer pay you securely straight from their own banking app, bank to bank.
How much does it cost?
A flat £1 per invoice, whatever the amount. Because it's a fixed fee rather than a percentage, larger invoices don't cost you more, and it works out far cheaper than card processing fees for anything more than around £50.
How do customers pay?
Once the you've connected your GES account to Crezco, every invoice you send includes a QR code and a payment link. The customer scans the QR with their phone camera or taps the link, confirms in their banking app, and confirms the payment. They won't need to enter the amount or your bank details, making it quick and easy.
How quickly do I get the money?
Crezco moves the money bank to bank, so it lands straight in your account rather than sitting with a card processor for days.
Do I need a card machine?
No. There's nothing to buy, carry or maintain. The QR code and payment link do the job from your phone or straight off the invoice.
Is it secure?
Yes. Open banking is regulated, and the payment happens inside the customer's own banking app using their bank's security.
How do I switch it on?
In Integration Settings in GES, there's an option to connect to Crezco. It's a one-time setup that takes a few minutes, then every invoice you send can be paid this way.