Why credit the diagnostic toward the repair?
It removes the feeling of paying twice, and it's the norm customers have learned from every other service company. State whether the credit applies so it isn't assumed.
Appliance repair · Free invoice sample
The general shape of an appliance repair invoice. A diagnostic fee, parts, and labor kept separate is what customers expect — and what stops the "you charged me twice" call. Figures are placeholders; open it in Stubsmith and enter your own.
Common practice
Appliance customers compare your invoice against the cost of a new unit. Clarity is what keeps the repair.
It removes the feeling of paying twice, and it's the norm customers have learned from every other service company. State whether the credit applies so it isn't assumed.
A part number lets the customer verify the price and proves the part was a genuine replacement. It also protects you on warranty claims.
Parts carry the manufacturer's warranty; labor carries yours. Two lines make it clear which one applies when something fails later.
Before you send it
Appliance repair is lightly regulated in most places, but a few specific rules reach it.
General information, not legal, tax, or licensing advice. Requirements differ by state, county, and city and change over time. Confirm with your state licensing board and the local authority having jurisdiction before relying on any of this.
Estimator notes
Charge it and credit it against the repair. That's the pattern customers expect and it keeps your time paid when they decline.
Yes, a markup is standard. Bill at list or a stated markup and keep the invoice consistent across customers.
Bill labor only and note that no parts warranty applies. Put that in writing on the invoice.
30 to 90 days on labor is common; parts follow the manufacturer. State both on the document.