Free HVAC Invoice Generator
Create an invoice for your service business. Add your details, preview the total, and download a PDF.
Make it yours
Enter your business and customer details, then list the work you completed.
See the finished invoice
Set quantities, prices, payment terms, and any tax or discount. Review the live preview.
Get your PDF
Download the invoice and attach it to your own email or print a copy for your customer.
What is an invoice generator?
An invoice generator creates a billing document for completed work. It brings your business details, services, charges, and payment terms together in one invoice.
Use this free tool for maintenance visits, installation work, repairs, and other service jobs. Creating a quote for work that has not started? Use the free estimate template.
A few helpful answers
Is this invoice generator really free?
Yes. You can edit the invoice and download a PDF without creating an account, entering a credit card, or subscribing to Zentive.
Does this save or email my invoice?
No. This tool works in your browser and does not store your invoice after you close or reload the page. Download your PDF before leaving, then send it using your own email.
Can customers pay through this PDF?
This free tool does not collect online payments. Add your payment instructions to the invoice. Zentive's paid software offers online payment collection.
Can I add tax, a discount, or a deposit?
Yes. Open “Tax, discount & amount paid.” A deposit already received belongs under amount paid. Discounts reduce the subtotal before sales tax is calculated.
Connect your invoices to the rest of your work.
With Zentive, keep customers, estimates, scheduled jobs, invoices, and online payments together. Spend less time entering the same details twice.