A generator repair invoice tells the customer what they owe, what it is for, and when and how to pay. Send a generator repair invoice before buying parts, or to contract clients each month. The free generator below is set up for generator repairers: add your items, due date and bank details, then download the PDF or send it on WhatsApp.
What to include on a Generator Repair Invoice
- Your business name, address and phone number
- Invoice number, invoice date and payment due date
- Client name
- Each item with quantity, price and line total
- Total amount due
- Your bank name, account number and account name
- Generator model
Example: a filled Generator Repair Invoice
A church has a monthly contract for its 60kVA generator. The repairer sends an invoice for the service, the parts and labour.
Generator servicing (oil, plugs, filters): 1 x ₦25,000 = ₦25,000
Carburettor replacement: 1 x ₦18,000 = ₦18,000
Labour: 1 x ₦15,000 = ₦15,000
Total: ₦58,000. These amounts are examples; use your own prices.
Common mistakes to avoid
- Not stating the generator model
- Mixing parts and labour
- No record of contract visits
- Sending the invoice without a due date
Need a different document?
- Customer has already paid? Give a generator repair receipt.
- Customer wants a price before deciding? Send a proforma invoice first.
How generator repairers use an invoice
Generator repairers fix home generators and maintain big generators for offices, banks and churches, often on monthly contracts.
Writing the items on a generator repair invoice
List each item or service on its own line, for example Generator servicing, Carburettor replacement, Labour, with the quantity and the price for one unit. The generator adds up each line and the total due. Below the items, add the date you expect payment and your bank details, so the customer can pay the moment they open the invoice.
Tips for generator repairers
- Write the generator model and size.
- List parts and labour separately.
- For contracts, bill monthly with the visits listed.
When the customer pays in parts
Keep the invoice open and give a receipt for each payment, showing the amount paid and the balance. When the last payment arrives, give a final receipt marked “Paid in full”.
Frequently asked questions
How do I bill a monthly maintenance contract?
Send one invoice per month listing the visits and any parts used.
Should I list parts separately?
Yes. It builds trust and avoids disputes.
Can I add my bank details to the invoice?
Yes. Fill in your bank name, account number and account name, and they print at the bottom of the invoice.
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