A heating and cooling technician in a navy shirt kneels beside an outdoor air conditioner and connects a gauge set to it, with a tool bag open on the lawn.
CONSTRUKTR emblem, a steel shield with a blue circuit patternFree HVAC template

Email the invoice for tonight's no-heat call the same night.

For example: The no-heat call is fixed at 10 pm, and the homeowner asks what they owe before you leave.

30 days free, no credit card required

Get CONSTRUKTR on Google Play

Generated image, not a real person.

What it costs

You write a number on a carbon pad in the dark, or send it tomorrow and wait.

What owners do today

A carbon-copy pad on the dash, or an invoice typed up the next morning.

Fill in the template

The lines are started for you and every price is blank. Change any line, put in your own prices, and remove every line the job does not need: a line left without a price stops the download until it has one.

No signup. The PDF is made in your browser, and what you type stays in this browser: nothing is sent to us unless you fill in the optional form after you download.

Your business
Bill to
Invoice details
Line items
Tax and terms

Use the rate for where the job is. This tool does not look rates up.

Your business name

INVOICE

INV-1001

DescriptionQtyPriceAmount
Subtotal
$0.00
Total
$0.00

Terms

Payment due by the date above. Parts carry the manufacturer's warranty; labor warranty as stated in the notes.

Notes

What was wrong, what was done, and anything the homeowner should watch for:

With CONSTRUKTR

Invoices from the job Every plan

  1. Create the invoice from the job.

    app.construktr.ai/jobs
    The tabs and the Job Details card of a job record on the CONSTRUKTR web dashboard for the demo company: tabs for overview, tasks and photos with a More menu, and the job details below: replaced 120 linear feet of damaged gutters and added downspout extensions for drainage away from the foundation, priority Normal, status Completed, scheduled for Saturday, September 12, 2026 at 9:00 AM, about 3 hours 30 minutes, source Internal.
    Full size Scroll to see the whole screen
    Job record: the whole job in one place
  2. Email it to the customer.

    app.construktr.ai
    The Overdue, by age card on the CONSTRUKTR web dashboard for the demo company: 2 invoices 1 to 30 days late for $4,951.93, 5 invoices 31 to 60 days late for $55,762.93, 4 invoices 61 to 90 days late for $38,734.93 and none 90 or more days late, each with a bar. Under the bars, the longest overdue invoice (INV-021, 83 days late, $2,934.93 due) and a Chase oldest button.
    Full size
    Invoices: who owes you, and how late

Check it yourself

Questions owners ask

Do I have to sign up to use this template?

No. Change the lines, put in your prices, check the preview and download the PDF. There is no account and no email needed.

Do I have to charge an after-hours rate?

No. The line is there for the shops that charge one. Remove it when you do not, or change the words to how you bill.

How do I bill refrigerant?

Write the refrigerant type in the description, the pounds in the quantity and the price per pound in the price. The template multiplies them and adds the line to the total.

Can the next invoice come from the job instead of being retyped?

In CONSTRUKTR you create the invoice from the job and email it to the customer.

Where does what I type go?

It stays in your browser. The PDF is made on your device, and this page keeps your draft in this browser so a refresh does not lose it. Nothing is sent to us unless you fill in the optional form after you download.

See it on your own jobs.

30 days free, no credit card required

Paid plans renew automatically. 100-day money-back guarantee on your first paid charge. Request a refund at support@construktr.ai. Cancel any time; access continues to the end of the paid period.