Skip to content
Free invoice template

Invoice template for gas engineers

A ready-to-use invoice layout built around how gas engineers actually bill jobs. It includes line items for materials and labour, a job reference, and payment terms.

Invoice

Your Business Name

Invoice #001

DescriptionAmount
Boiler installation and replacementNot priced
Annual gas safety checksNot priced
Gas cooker and hob installationNot priced
Central heating system designNot priced

Typical gas engineer job value: £80–4,000

What to include on a gas engineer invoice

  • Boiler installation and replacement
  • Annual gas safety checks
  • Gas cooker and hob installation
  • Central heating system design
  • Landlord gas safety certificates
  • Gas leak detection and repair

FAQs

Can I attach Gas Safe certificates to invoices?

Yes. Attach PDF certificates or photos to any invoice, giving your customer a complete record of the work and compliance documents together.

Does TradeTally help manage recurring boiler service customers?

Your customer list makes it easy to find returning clients. Create new invoices from previous ones to save time on repeat servicing.

How does TradeTally handle landlord gas safety work?

Invoice landlords or letting agents, attach the CP12 certificate, and record the cost of flue gas analyser calibration against the job.