A service contract, a manufacturer warranty, and a maintenance plan can be sold at the same counter, printed on similar paper, and described with the same words. The label on the offer does not settle what the product is. The structure of the document does. Sort the product type first, because a fair comparison pairs products of the same kind.

Start with the source of the promise

A manufacturer warranty comes from the company that made the item and is often included in the purchase of the item. A service contract is usually sold as a separate product and carries its own seller, terms, and cancellation rules. A maintenance plan is usually a schedule of routine upkeep, and it may or may not promise repairs. Ask who is making the promise, and whether it is part of the original purchase or a second purchase.

Read the document, not only the offer

Check the title block, the form number, and the section headings. A document that uses the words contract, agreement, coverage, and obligor is built differently from one that is mainly a list of visits and services. If the document does not say what kind of product it is, write that down as an open question. The state page on this site names the statute or program that applies in that state, which is a fair place to start the sort.

Compare only matching pairs

Set each offer beside offers of the same type. A warranty and a service contract can cover similar parts for similar periods and still differ in who pays, how a claim is filed, and what ends the promise. Keep a short sheet with a column for each offer and rows for product type, source of promise, length of term, and who to call. If a row is blank on any offer, mark it not stated rather than filling it from memory.

What this guide does not do

This guide does not rank providers or products, and it does not say which type is better for any household. It does not describe any named company's contract. This edition has not read every state's definitions for each product type. Where a definition matters to your decision, read the state page and the statute it names, then read the contract in front of you.