For UK gas engineers
The invoice app for UK gas engineers
Service visits, breakdowns and landlord checks invoiced from the doorstep, with recurring contracts that bill themselves and a payment link the customer can tap.
- Works offline in the van, the loft and the basement
- Voice note or photo in, branded PDF out
- £8.99 a month after a 14-day free trial
No card needed to start the trial.
Gas and heating work runs on volume — a lot of short visits rather than a few long jobs. That is precisely the pattern that buries you in admin, because the invoicing effort per pound earned is higher than in any other trade.
Quill is set up for high-frequency invoicing: saved rates, one-tap job lines, recurring billing for service agreements, and payment links so short jobs get paid immediately rather than chased.
What gas engineers use Quill for
Recurring maintenance billing
Annual service agreements and maintenance contracts go out on a schedule automatically, so the renewal revenue does not depend on you remembering.
Doorstep invoicing
Finish the service, send the invoice from the doorstep with a card payment link on it, and a good proportion are paid before you reach the next job.
Your registration on the paperwork
Company registration and scheme numbers print in the footer of every document, which matters to landlords and letting agents keeping records.
Photos of the appliance
Attach photographs of what you found to the job, which settles queries about condemned appliances and recommended work.
Quotes for the work you spot
Send a branded estimate for the replacement or upgrade you have recommended while you are still standing in front of it.
Works with no signal
Boiler cupboards, cellars and plant rooms are signal dead zones. Quill keeps working and syncs when you are back out.
Jobs gas engineers invoice with Quill
Quill ships with a gas and heating engineer preset, so your common jobs are one tap rather than typed out every time. You can edit the list and save your own.
- Annual boiler service
- Landlord gas safety visit
- Breakdown and repair call-outs
- Boiler installation and swap
- Unvented cylinder work
- Heating system upgrades and controls
- Commissioning visits
- Maintenance contract billing
Everything in every plan
Works with no signal
Quill is a progressive web app with a full offline mode. Write an invoice in a loft, a basement or a plant room with no bars, and it queues locally and syncs the moment you get signal back.
Autosave and crash recovery
Every meaningful edit is saved locally as you type. If your phone dies or the browser reloads mid-job, Quill offers your draft back rather than losing it.
Voice and photo to invoice
Describe the job as a voice note, or photograph a handwritten job sheet, and Quill drafts the invoice from it. Correct it once and it learns the pattern.
Branded PDF invoices
Pick a template or design your own in the visual builder. Your logo, your colours, your scheme numbers and your bank details on every document.
Get paid by card
Attach a Stripe payment link so the customer can pay from the invoice on their phone, rather than waiting for a bank transfer you have to chase.
VAT and CIS handled
Set your VAT rate, flag domestic reverse charge work, and let Quill calculate CIS deductions on labour only. The figures come out right without a spreadsheet.
Estimates that become invoices
Send a branded estimate, capture the customer's signature on screen, then convert the accepted estimate into an invoice without retyping a line.
Payment matching from your bank
Connect your bank through open banking or import a CSV, and Quill matches incoming payments to open invoices so you can see who has actually paid.
Pricing
Every feature is in both plans. The only difference is how often you pay.
14-day free trial on both. No card required to start.
Questions
Does Quill produce Gas Safe certificates or CP12s?
No. Quill handles invoicing, estimates and payment tracking. It does not generate gas safety records — you would use your existing certificate software for those.
Can I bill annual service contracts automatically?
Yes. Recurring invoices can be set to go out on a schedule, so maintenance agreements bill without manual work.
Can I take payment at the door?
Yes. Attach a Stripe payment link to the invoice and the customer can pay by card from their phone immediately.
Does it work offline?
Yes, completely. Everything saves to the device and syncs automatically when you have signal again.
How much is it?
£8.99 a month or £89.99 a year after a 14-day free trial. No card needed to start.
Start invoicing from the van
Free for 14 days, no card required. £8.99 a month after that, cancel whenever you like.