# Appliance store step 3: serial numbers and warranties

> Record the serial number of every AC, fridge and washing machine you sell and print the manufacturer and compressor warranty on the invoice.

Source: https://docs.smartposhub.com/business-types/appliances/step-3-serial-numbers-and-warranties/  
Last updated: 2026-10-30  
Product: SmartPOS Hub (https://smartposhub.com)

For an appliance store the serial number is the customer's proof of purchase and the key to every warranty claim. Set up two things on each big-ticket product: the **serial number box** on sales and the **warranty**.

## Before you start

- Products are imported or added ([step 2](https://docs.smartposhub.com/business-types/appliances/step-2-import-appliances-and-brands/)).
- You know the warranty terms per brand and category.

## Turn on serial numbers

1. Edit an AC, fridge or washing machine and open **Stock**.
2. Tick **Enable Product description, IMEI or Serial Number** and save.
3. Repeat for every product sold with a serial number. Small appliances without serials can stay off.
4. In **Settings › Invoice Settings**, edit your invoice layout and tick **Show sale description**.

![Product form Stock and locations section with the Enable Product description, IMEI or Serial Number checkbox outlined](https://docs.smartposhub.com/_astro/product-form-imei-switch.BVfesO5m.png) (web app page: `/products/create`)
*The serial number switch is in the product's Stock section.*

When you sell the product, each unit gets its own line and a box: *Add product IMEI, Serial number or other informations here.* Type or scan the serial (for a split AC, both the indoor and outdoor unit).

## Create and attach warranties

1. **Products › Warranties** › **Add** (or **Import prebuilt**). Enter a name, description and duration, for example "1 year parts, 10 years compressor".
2. Edit each product and choose its **Warranty** in **Basic info**.
3. **Settings › Business Settings › Product**: tick **Enable Warranty** to choose or change the warranty per line in **Sell › Add Sale**.
4. In your invoice layout, tick **Show warranty name**, **Show warranty expiry date** and **Show warranty description**.

![Warranties list with 1, 2, 3 and 5 year warranties and a 90 days warranty with descriptions and durations](https://docs.smartposhub.com/_astro/warranties-list.BiU4tVJE.png) (web app page: `/warranties`)
*Products › Warranties.*

![Add Sale line with lot selector, serial number box, unit price, discount, warranty select and subtotal](https://docs.smartposhub.com/_astro/credit-sale-customer-and-item.BIgMGYn3.png) (web app page: `/sells/create`)
*On Add Sale, each line has the serial box and its warranty.*

**Note:** 
There is no stock register of serial numbers from purchase to sale. If you need to trace a delivery batch, tick **Enable Lot number** in **Settings › Business Settings › Purchases** and enter the shipment number on each purchase line.

Next: [step 4: installation and delivery](https://docs.smartposhub.com/business-types/appliances/step-4-installation-and-delivery/).

  - [Serial numbers, IMEI and lots](https://docs.smartposhub.com/inventory/serial-imei-and-lots/)
  - [Receipts and invoice layouts](https://docs.smartposhub.com/selling/receipts-and-invoice-layouts/)

## Frequently asked questions

### Where is the serial number stored?

On the sale line. With Enable Product description, IMEI or Serial Number on the product, each unit sold gets its own line with a description box for the serial number. It prints on the invoice when the layout shows the sale description.

### Can I record serial numbers when goods arrive?

Not per unit. Purchases record quantity and cost. You can use lot numbers on purchase lines for a shipment or batch, and record each unit's serial at the sale.

### Can one product have two warranties, like 1 year on parts and 10 years on the compressor?

A product has one warranty. Create a warranty whose description explains both, for example "1 year parts, 10 years compressor", and choose the warranty name and description to print on the invoice.

### Can a customer find their warranty later?

Yes. Find the sale in Sell › All sales or on the customer's page, and reprint the invoice with the serial and warranty expiry date.

### What about outdoor and indoor unit serials of a split AC?

Type both serials in the same line's description box, for example IDU 123… / ODU 456….