HVAC Invoice Template

Most HVAC contractors lose money not because of bad pricing, but because of sloppy invoicing — missing line items, vague descriptions, and payment terms buried in the footer.

This template gives you a one-page, customer-ready invoice that:

• Itemizes labor and parts separately so customers can see exactly what they are paying for

• Surfaces payment terms clearly at the top (net-15 by default) to shorten DSO

• Captures equipment model and serial so the invoice doubles as the service record for warranty claims

• Includes a signature block for capturing customer sign-off in the field

Run it for a week and watch your average days-to-paid drop. Most contractors see a 3-7 day improvement just from making payment terms visible.

1. Open the PDF and either print it for handwritten use or copy the layout into your invoicing tool.
2. Fill in your business header — company name, license number, address, phone, and logo.
3. On each job, complete the customer block, then itemize labor (rate × hours) and parts (qty × unit price) on separate lines.
4. Apply your local sales tax to parts only (most states do not tax labor, but check your jurisdiction).
5. Set the Due date to your standard terms — net-15 for residential, net-30 for commercial.
6. Have the customer sign the bottom block when work is complete and leave a copy on site.
7. Email or text the signed invoice the same day. The faster it lands in the customer’s inbox, the faster you get paid.

• Company header block — business name, address, phone, license number, and logo placeholder
• Customer block — name, service address, phone, and email
• Service details — date of service, technician name, PO/work order number
• Itemized labor — rate × hours rows with task descriptions
• Itemized parts — quantity × unit price rows with part numbers
• Subtotal, sales tax, and total — separate lines, with tax applied to parts only
• Payment terms — net-15 default, prominent placement at the top of the invoice
• Equipment captured — model number, serial number, install date (doubles as warranty record)
• Customer signature block — for in-field sign-off
• Footer — payment methods accepted, late-fee policy, return policy