Most service contracts and warranties are read from the front, but the clauses that matter most are often built from words defined near the start. A plain phrase like covered part or authorized provider can carry a specific meaning that narrows or widens everything that follows. Read the definitions first, then read the promises with those meanings in your head.
The words to mark
Look for the terms that describe what is included, who may perform work, and when the document applies. Typical examples are covered part, covered system, wear and tear, normal use, installation, authorized provider, and proof of ownership. Mark each defined word every time it appears. A term used in a promise and again in an exclusion deserves a second reading.
Questions to ask about each term
Ask what the term includes and what it leaves out. Ask whether the definition names specific parts or describes a category. Ask who decides whether a condition counts as wear and tear, and whether that decision must be written down. Ask whether a provider must be approved by the company or whether any qualified person may do the work. Ask what proof the document requires before a claim can start.
How the rest of the contract depends on definitions
Cancellation, transfer, and waiting period rules usually reference the same defined terms. A waiting period, for example, is the stretch after the contract begins during which certain claims may not yet be made. Whether it applies to every item or only some depends on how the document defines the covered items. Ask the seller to point to the sentence that sets the waiting period and to the definition it relies on.
Where the published figures live
This site does not describe any company's contract, and it does not rank contract providers. For the published service life figures used in planning, see the appliance ranking table, which sets out typical service life by system. Use those figures as planning inputs, and use the contract's own definitions to judge what the contract will actually do.