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Free template

HVAC invoice template

An HVAC invoice with the service call, repair labor and parts, already laid out. Change the details, and the totals and taxes work themselves out.

Alberta: GST 5%, in CAD

Use this template
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Northwind Heating and Air
Invoice #302
Amount due
CA$436.80
Billed to
Ridgeline Roofing
accounts@ridgeline.co
Issued Nov 3, 2026
Due Nov 17, 2026
ItemAmount
Furnace tune up1 visit × CA$149.00CA$149.00
Replacement filter2 ea × CA$28.00CA$56.00
Igniter replacement, labor1 hr × CA$125.00CA$125.00
Hot surface igniter1 ea × CA$86.00CA$86.00
SubtotalCA$416.00
GST (5%)CA$20.80
TotalCA$436.80

What to include

What goes on an HVAC invoice

Clients pay faster when they can see what they are paying for. This template already has every part in place.

Work out the tax

  1. 1Your business and the clientYour name, email and phone, and who you are billing. Add the job address when it differs from theirs. In Canada, add your GST/HST number once you are registered.
  2. 2An invoice number and two datesA number that never repeats, the date you issued it, and the date it is due.
  3. 3The service call and laborThe visit or tune up price, then repair labor by the hour.
  4. 4Parts, namedEach part by the piece, named so the client can match it to the warranty.
  5. 5Taxes and the totalEach tax with its rate, like GST 5% in Alberta or sales tax 5.75% in Ohio, then the total.
  6. 6How to payYour payment terms and the ways you accept payment, like bank transfer or card.

Questions

Something else? Write to support@sumocat.app.

Can I bill maintenance plans automatically?

Yes, with Sumocat Pro. A recurring invoice in the app creates each bill on schedule and can email it to the client.

Which taxes does this template use?

The Canada version uses GST 5% for Alberta, in Canadian dollars. The US version uses sales tax 5.75% for Ohio, in US dollars. They are examples: which taxes apply depends on where you work and what you sell, so check with your tax authority.

Is this template free?

Yes. Open it in the free invoice generator, change anything, and download the PDF with no sign up and no watermark. To keep your clients and prices and send each invoice from your iPhone, use the Sumocat app with a free account.

Quote the install.
Bill the service call.

Coming soon to the App Store
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  • No caps on invoices
  • Works offline