A refrigerator fails on a Sunday. Somewhere in the house there is a receipt proving when it was bought, a booklet describing what the manufacturer promised, and a serial number stamped on a plate you cannot read without a flashlight. Households that can produce those three things in ten minutes get a repair. Households that cannot often pay for one they were already owed.
The distance between those outcomes is mostly a filing habit. A little of the law helps too, because the rights attached to an ordinary purchase are wider than most people assume, while the paperwork that unlocks them is narrower than the dread suggests.
The promise that comes with the purchase
Long before anyone hands you a booklet, state law has attached unwritten promises to almost everything you buy. The main one is the warranty of merchantability: a seller who deals in these goods is promising the product will do what such a product is supposed to do. A washer washes. A furnace heats. Under the Uniform Commercial Code version of the rule, the promise applies when the seller is a merchant in that kind of goods, and it arrives without anyone saying a word.
A second implied promise, fitness for a particular purpose, attaches when you describe a job and the seller points you at a product for it. If a salesperson assures you a dehumidifier will handle a basement of a given size, that assurance is doing legal work.
These promises have edges. A seller can disclaim them in writing or mark goods as sold as-is where state law permits, and they do not cover a defect an ordinary examination would have revealed. The classic illustration is a Massachusetts case from 1964, Webster v. Blue Ship Tea Room, where a diner who found a bone in fish chowder lost, because bones in chowder are part of the bargain. Duration varies by state and can reach four years.
Read the warranty before the money moves
The Federal Trade Commission puts the timing plainly: whenever a warranty exists, the law says it must be available for you to read before you buy, in a store or on a website. That makes it a shopping document rather than a drawer document, and comparing two of them is often more revealing than comparing spec sheets.
Four questions get you most of the way. How long does coverage last, and is it capped by use as well as time. Which parts or repairs are named as covered, since anything unlisted should be assumed excluded. Will the company repair, replace, or refund. And who do you call, retailer or manufacturer, and who pays for labor and shipping.
The repair restriction federal law will not allow
One clause deserves attention because it is frequently unenforceable. Under the Magnuson-Moss Warranty Act of 1975, a manufacturer cannot condition your warranty on using its own branded parts or its authorized service network unless it provides those parts and services free or holds a waiver from the FTC.
The agency has been active about this. In July 2024 FTC staff sent warning letters to eight companies over warranty terms that interfered with customers repairing their own products, and three of those letters, to ASRock, Zotac, and Gigabyte, singled out stickers reading warranty void if removed placed where they blocked routine maintenance. Two years earlier the commission finalized orders against Harley-Davidson, Weber-Stephen, and MWE Investments over language claiming coverage would end if a customer used an independent repairer or a third-party part.
The practical reading is not that a warranty covers everything forever. It is that using an independent technician or a generic filter does not by itself end coverage, and a company denying a claim on those grounds is asserting something about causation that it should have to support.
What a claim asks you to prove
Every claim runs on two facts: that the product is yours and that it is still inside the coverage window. The receipt establishes both, which is why the FTC's advice is to keep it filed with the warranty rather than in a shoebox. If you bought online, download the warranty as a file instead of trusting that the product page will exist in three years. And if a salesperson promises something the paper does not say, get it in writing before you leave.
When a claim stalls, contact the seller first, then write to the manufacturer at the address in the warranty, sending it certified mail with a return receipt so there is proof of delivery. A company may be entitled to attempt a repair before refunding anything. One rule is worth memorizing: if you report a defect during the coverage period and the repair is botched, the company still has to make it right even if the warranty expires while that is happening. Unresolved cases go to the FTC and your state attorney general.
Service contracts are a separate purchase
The extended warranty offered at the register is not a warranty at all. It is a service contract, sold separately, often administered by a third company rather than the manufacturer. Before buying one, check what the free coverage already includes for the same period, since the two frequently overlap in the first year or two, and ask who performs the work and who pays if that administrator folds.
One page per machine
The filing side is simple and gets skipped because it is boring. Give each major appliance one page, digital or paper, and fill in the identifying details the day the machine arrives rather than the day it dies. Photograph the data plate, since serial numbers hide inside door frames, behind kickplates, and on the backs of cabinets where a flashlight and a mirror become necessary later.
| Record | Why it matters at claim time |
|---|---|
| Model and serial number, photographed | Every support call opens with them, and the plate is hard to reach once the unit is installed |
| Purchase date, price, and seller | Proves the coverage window and that you are the original owner |
| Warranty length and expiry date | Tells you whether to call now or wait, and what to escalate |
| Each service visit: date, company, diagnosis, parts | Three visits for one fault is an argument for replacement rather than a fourth repair |
| Maintenance done: filters, descaling, venting | Answers a denial that blames neglect for the failure |
The service history is the part people never keep and later wish they had. Write down what the technician said was wrong, which parts were replaced, and the invoice number. A record showing the same fault three times turns a fourth service call into a conversation about replacement, and a record of filter changes answers the denial letter that blames you for the breakdown.
Setting up the folder before the next breakdown
Give this half an hour once, and it stops being a project. Walk the house with a phone and photograph the data plate on the refrigerator, the washer, the dishwasher, the water heater, and the furnace. Put each photo in a folder named for that appliance, and drop the warranty file and a picture of the receipt in beside it.
Then add the two entries that make the folder work on its own. Write each warranty's expiry date on the page, and set one calendar reminder thirty days ahead of it, which is the window where a marginal fault is still worth reporting for free. Next time something dies on a Sunday, the job is opening one folder and making a call with the model number in hand. The FTC's own summary of these rights sits on its consumer page on warranties, and the unwritten promise behind them is explained in Cornell's note on the implied warranty of merchantability.