Appliance Repair Invoice Template: Diagnostic Fee, Parts by Model Number and Warranty Lines

What an appliance repair invoice has to prove

An appliance invoice is read three times. The customer reads it on the day to see why the dryer cost what it did. You read it again in 60 days when the same customer calls saying it stopped heating, and the invoice is the only proof of which part you replaced and when your warranty ends. And the manufacturer or home-warranty company reads it if a part fails under its warranty. Every line below is there for one of those readers.

The template, line by line

1. Your company, license number where your state requires one, invoice number and date.
2. Customer name, service address and phone.
3. Appliance. Type, brand, model number and serial number. Take a photo of the tag and attach it.
4. Complaint and finding. In the customer's words, then yours: "Dryer runs, no heat. Thermal fuse open, heating element open."
5. Diagnostic or trip fee, and a line showing it credited if the customer approved the repair.
6. Labor. Flat rate per repair or hours at your rate, whichever you quoted.
7. Parts. One line per part with the part number, quantity and price. Mark OEM or aftermarket.
8. Second trip, if a part had to be ordered.
9. Sales tax, only on what is taxable in your state; many states tax parts and not labor, some tax both.
10. Warranty. Parts and labor period in days, and what it excludes.
11. Payment and signature. Paid by, date, and the customer's approval of the repair.

Worked example: dryer not heating

These are our assumptions for illustration, not market prices. Electric dryer, no heat. The technician finds an open thermal fuse and an open heating element, has both on the truck, and finishes on the first visit.

Two notes on this example. First, the vent line matters: a blown thermal fuse often means restricted airflow, and if you replace the fuse without saying so, the dryer comes back. Writing it on the invoice protects your warranty. Second, if the element had to be ordered, the invoice would carry a second-trip line and the customer would get a deposit invoice on the first visit. With a $55 second-trip charge and no vent work, the same repair totals $165 + $148 + $18 + $55 + $13.28 = $399.28.

Flat rate or hourly on the labor line?

Customers compare appliance invoices by the total, so most repair companies quote labor as a flat rate per repair type: replace a dryer element, a washer drain pump, a dishwasher control board. Flat rates are faster to quote on the phone and avoid arguments about a slow job. Build each one from your average hours for that repair, your hourly cost and your margin, and review them twice a year against the actual times your technicians log. Keep hourly billing for the jobs you cannot predict, such as intermittent faults, and say so on the estimate before the work starts.

Home-warranty and manufacturer-warranty jobs

For home-warranty dispatches, the invoice needs the claim or work order number, the service fee you collected from the homeowner, the authorization number for the repair, and the part numbers exactly as you submitted them. Bill the warranty company only what it authorized; anything the homeowner chose to add (a vent cleaning, a second appliance) goes on a separate customer invoice so the warranty company's payment and the homeowner's payment never get mixed. For manufacturer warranty work, follow the manufacturer's claim form and keep the serial-number photo.

Sealed-system repairs on refrigerators and freezers (compressors, leaks, recharges) need an EPA Section 608 certified technician to handle the refrigerant. List the refrigerant type and amount on the invoice.

Estimate first, invoice second

The invoice should match an estimate the customer approved before the work: the same labor, the same parts, the same diagnostic credit. Our appliance repair estimate template uses the same lines, and the appliance repair estimate calculator prices the labor and parts markup from your own costs.

Common mistakes

• No model or serial number, so the next call starts from zero.
• "Parts: $166" on one line, which makes warranty claims and customer questions harder.
• Diagnostic fee not shown as credited, so the customer thinks they paid it twice.
• No warranty period, which turns every callback into a negotiation.

Where Unmanually fits

Unmanually is a 24/7 AI Office Manager for appliance repair companies that you run by voice. It answers while you are behind a washer, asks the caller to text a photo of the model tag, books the visit, orders the part you approve, books the return trip when it arrives, sends the invoice and follows up until it is paid. See Unmanually for appliance repair, or compare job apps in best software for an appliance repair business and the other tool comparisons.