Warranty certificate example: coverage, dates, how to claim

Warranty certificate, explained: what the document promises and what it doesn’t

Updated September 6, 2026

The warranty certificate is the document nobody reads until the day they need it, and then it is in a drawer. Here is what each section means, how it relates to the receipt, and the dates to take from it.

Fictional manufacturer warranty certificate for a dishwasher showing product, serial number, start and end dates, coverage and exclusions

Fictional sample — every name, number and amount is invented.

The sample is a manufacturer's warranty certificate for the same fictional dishwasher as the appliance receipt example. Certificates vary in layout, but they all answer the same six questions, and those are the six things worth reading before you file it.

The six things a certificate tells you

Section	On the sample	What it decides
Product and serial number	SMS4HVW33E, SN 0093-4471-XK	Whether this certificate covers your unit at all
Start date	14 Mar 2026	Almost always the purchase date on the receipt
Length or end date	24 months, ends 13 Mar 2028	The last day a claim is free
What is covered	Defects in materials and workmanship	The kind of fault you can claim for
What is excluded	Misuse, limescale, unauthorised repair, consumables	The reasons a claim gets refused
How to claim	Phone, web form, serial and receipt to hand	Who you call and what they will ask for

The serial number is the field people skip. A certificate that does not match the label on the machine is a certificate for somebody else's machine, and support desks check. Compare them once, the day the appliance arrives.

Where the dates come from

Most certificates state a length, not an end date. Work it out now and write it on the certificate: purchase date plus the warranty months, using calendar months. A 31 January purchase with a 6-month warranty ends on 31 July; with the length in months, the end lands on the same day of the month, or the last day of a shorter month. The purchase record builder does this and adds a "test everything" reminder 30 days before the end, which is the single most useful thing you can do with a warranty: run every program and press every button while a fault is still the maker's problem.

Warranty, guarantee, and the law

A warranty is the manufacturer's voluntary promise on its own terms. It can be generous or thin, and it can exclude what it likes. Separately, consumer law in most countries gives you a legal guarantee against the seller that the certificate cannot shrink: at least two years in the EU, up to six years to bring a claim in England and Wales, a "reasonable time" under Australian Consumer Law, and various implied-warranty rules in US states. The certificate's own footnote, "your statutory rights are not affected," is a reference to this.

The practical consequence: when the manufacturer's warranty has ended and the appliance fails early, the seller may still owe you a remedy. The guide to keeping track of warranties covers the rules by country; this page is about the document in your hand.

What to save alongside it

The receipt. A certificate proves the promise; the receipt proves the date and that the promise applies to you. Support will ask for both.
The delivery note, if delivery came later than purchase. Some certificates and most laws count from delivery.
Registration confirmation, if you registered the product. It is also how the maker reaches you about safety recalls.
Every repair record. Under warranty, a repair invoice shows the fault history; the repair invoice example shows what a good one contains.

The questions it will have to answer

Is the dishwasher still under warranty, and until when?
Is this fault covered, or is it on the exclusions list?
What number do I call, and what will they ask for?
Does the serial number match?

The manual way: photograph the certificate next to the receipt, name both with the date and item, and put the end date in your calendar. The Paperlock way: photograph both into the vault; Paperlock reads the end date, files the pair together, and reminds you 30 and 7 days before it lapses. Either way, the certificate goes from "somewhere in a drawer" to "the answer to a question."

Checklist

Check the serial number on the certificate matches the label on the appliance
Write the warranty end date on the certificate if it only states the length
Read the exclusions once, so you know what a claim will be refused for
Note the claim route: phone number, web form, whether the retailer or the maker handles it
Store it with the receipt; a certificate without a receipt is usually worthless

Common questions

Does a warranty start on the purchase date or the delivery date?

Usually the purchase date shown on the receipt, unless the certificate says otherwise. For goods delivered weeks after purchase, some manufacturers and most consumer laws count from delivery. Check the certificate wording and keep the delivery note.

Do I need to register the product for the warranty to apply?

For the basic manufacturer warranty, usually not — the receipt is the proof. Registration is often required for an extended or promotional warranty, and it is useful anyway because it lets the maker contact you about safety recalls.

What is the difference between a warranty and a guarantee?

In everyday use they are the same thing: a promise to repair or replace. Legally, a warranty is the manufacturer’s voluntary promise on its own terms, while a legal guarantee is the minimum protection consumer law gives you against the seller, which the manufacturer’s terms cannot reduce.

What do warranties usually exclude?

Damage from misuse or accidents, wear-and-tear parts such as filters and hoses, faults caused by incorrect installation, limescale or power surges, and anything opened or repaired by someone the maker did not authorise. The exclusions section is the part to read before calling.