Free template

HVAC technician invoice template

An example invoice for HVAC technicians, and what to put on yours. Make your own free in InvoiceKoala: fill it in on your phone, add photos of the job, and send it by WhatsApp, text or email.

Your Business Name
ABN / VAT no. · phone · email
INVOICE
INV-0042
Bill to
Customer name
Job address
Date
17 Oct 2026
Due
31 Oct 2026
DescriptionQtyPriceAmount
Split system supply and install (7 kW)1$2,650.00$2,650.00
Annual service1$180.00$180.00
Refrigerant top-up1$140.00$140.00
Labour2$105.00$210.00
Subtotal$3,180.00
Tax (10%)$318.00
Total$3,498.00

How to pay
Bank transfer to: account name, BSB / sort code, account number. Please use INV-0042 as the reference.

What to put on an HVAC technician invoice

  • Your business name, contact details and business number (for example your ABN in Australia)
  • Your customer's name and the job address
  • An invoice number that goes up each time, the date, and when payment is due
  • Each item of work or materials, with quantity, price and amount
  • The tax amount, if you're registered for GST or VAT
  • How to pay you, and the reference to use

If you're registered for GST or VAT, your country may require extra details on a tax invoice (in Australia, for example, the words "Tax invoice", your ABN and the GST amount). Check with your accountant.

Why HVAC technicians use InvoiceKoala

  • Quote on site, and the customer accepts with a tap and a signature
  • Turn the quote into an invoice in one tap when the job's done
  • See when the invoice is opened, and send automatic reminders
  • Works with no signal, in roof spaces and basements
  • Free plan: 5 invoices a month, unlimited quotes, no card needed

Templates for other trades: Electrician · Plumber · Builder · Carpenter · Painter · Landscaper · Cleaner · Handyman