Many appliances come with a manufacturer's warranty before any service contract enters the picture. That promise often asks you to register the product, and the step is easy to skip during a busy move-in week. The company legally responsible for that promise is called the obligor, and the obligor is the party you would need to ask for help if something fails.
Decide who holds the proof
Registration creates a record that ties the serial number of the machine to a purchase date and an owner. Whoever completes the form, you need a copy you can find later. If the seller offers to register for you, ask them to send the confirmation to your own email and keep the receipt with the appliance manual.
Check what the form asks for
Read the registration page before you start. Look for three things: the window for registering, which proof of purchase is accepted, and whether the form asks for the serial number or the model number. Some pages ask for a photo of the receipt, while others want only typed details. If the window is short, register on the day you set up the appliance rather than waiting for a quiet afternoon.
When to do it yourself
Doing it yourself makes sense when you have the paperwork in hand, the serial number at your fingertips, and a few free minutes. You see the confirmation on your own screen, and you can catch an error before the window closes. Hiring the work out makes sense when several appliances arrived with a home purchase, the paperwork is scattered, or the seller already keeps a registry. In either case, ask for the confirmation page or message, not just a promise that the task was done.
Questions to ask before you hand it off
Ask who will submit the form, which route they will use, how long the confirmation takes to arrive, and where the copy will be stored. Ask whether registration also activates a service contract or only the manufacturer's promise. If the answers are unclear, completing the form yourself and filing the confirmation with the manual is the simplest path.
What registration does not do
Registering a manufacturer's warranty does not create a service contract, and it does not decide what that warranty covers. Those terms sit in the written documents. To see how a service contract is usually laid out before you buy one, read the home warranty sample contract page on this site.