Invoice app for gas engineers

Gas engineer invoices made easy.
Say the job.
Get paid.

Create gas engineer quotes and invoices by voice. Say the customer, the work, the price and the terms, then check and send a professional PDF from your phone. Useful for boiler servicing, landlord checks, repairs, parts and repeat customers.

Try SayInvoice Free

Setup takes 60 seconds.
No credit card required.

Ready, Boss.

Tap to speak your next invoice.

Quote
Invoice

Useful for gas engineers jobs

boiler servicinglandlord checksrepairspartscertificates

Northfield Services

accounts@northfieldservices.co.uk

INVOICE

SI-0042

Billed To

Harbour Property Services

18 Market Street, Worcester

boiler servicing £150.00
landlord checks £45.00
Subtotal£195.00
VAT (20%)£39.00
Total Due £234.00
Gas Engineers output

Gas engineer invoices for boiler service, landlord checks, repairs, and parts.

SayInvoice helps gas engineers turn fresh job notes into professional quote and invoice PDFs, with the customer details, job description, totals, VAT and payment terms kept together.

  • Your logo and business details perfectly formatted.
  • Bank details and payment terms automatically attached.
  • Pre-written messages for WhatsApp or email.

Made for gas engineers who would rather be on the tools than doing admin.

After a job, say the customer name, what you did, materials, price, VAT and payment terms. SayInvoice turns it into a draft quote or invoice you can check and send as a PDF.

1

Talk to your phone

Hit the big mic button. Tell it the client's name, what you did, and the price.

2

Check the draft

The app types it out, does the maths, and adds VAT if you need it. You approve before anything is sent.

3

Send & get paid

Send a proper PDF by WhatsApp or email before the admin follows you home.

Real gas engineers jobs SayInvoice can handle.

Use it for quick quotes, finished invoices, repeat customers and jobs with labour, materials or disposal notes.

The quick quote

Invoice for boiler service and landlord gas safety check, certificate provided, total 120 pounds, payment due within 7 days.

Quote while the job is fresh

The finished invoice

Save the customer, add labour and materials, include bank details and payment terms, then send a proper PDF by WhatsApp or email.

Look professional, get paid faster

Remembers Customers

Say their name once. The app remembers addresses and details for future jobs.

Private Site Notes

Save gate codes, pets, or parking rules safely. They never print on invoices.

Does the Maths For You

Say the raw numbers, and the app calculates subtotals, VAT, and totals.

Unlimited Paid Use

Invoice Only includes unlimited invoices. Pro includes unlimited quotes and invoices.

Accountant Export in 3 Clicks

Choose the period, choose document types, then download a workbook or PDF pack.

Track What You're Owed

Save drafts, search your history, and see quotes and invoices clearly.

Built for gas engineers

The everyday gas engineers work it helps with.

Start with the job type, add what was done, then check the total before sending. It keeps each invoice clear without making you rebuild a template.

Boiler Servicing Add the customer, work completed, price and payment terms while the details are still fresh.
Landlord Checks Add the customer, work completed, price and payment terms while the details are still fresh.
Repairs Add the customer, work completed, price and payment terms while the details are still fresh.
Parts Add labour and materials clearly, then send a PDF the customer can use to approve and pay you.
Certificates Add the customer, work completed, price and payment terms while the details are still fresh.
More trades using SayInvoice
TradesmenPlumbersElectriciansDecoratorsRoofersGardeners
More help More useful invoice guides for gas engineers Open guides

Straight answers.

No tech jargon, just how it works for your business.

Can I mention certificates?

Yes. Add certificate or safety check notes before sending the invoice.

Can I split parts and labour?

Yes. Separate lines make repair invoices clearer.

Can I use this for quotes as well as invoices?

Yes. SayInvoice supports quotes and invoices, so you can quote first and turn accepted work into a final invoice later.

Does SayInvoice send anything before I check it?

No. The app creates a draft first, so you can check the customer, work details, totals, VAT, and payment terms before sending.

Plans from £14.99/month.

Invoice Only gives you unlimited invoices, remembered clients, and accountant export. Pro is £18.99/month for unlimited quotes and invoices, smarter insights, private notes, and more.

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5 free documents to start. No card needed.