# Certificate of Warranty...Yes or No Or?

**URL:** <https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559>\
**Category:** Factual Questions\
**Created:** [October 27, 2000, 5:01am UTC](https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559 "2000-10-27T05:01:18Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![OliverTwistofLime](https://avatars.discourse-cdn.com/v4/letter/o/b487fb/32.png) [@OliverTwistofLime](https://boards.straightdope.com/u/OliverTwistofLime)\
**Post date:** [October 27, 2000, 5:01am UTC](https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559/1 "2000-10-27T05:01:18Z")

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Whenever I buy an appliance or camera or whatnot, there is a Certificate of Warranty generally included with the product requesting Dealers’ name and Date of Purchase.

Is it necessary to fill out these things including all the demographic material requested for the warranty to be effective? I have heard yes; wait as long as you want and put in a purchase date later than that which is true or forget about sending it in; “You are covered anyway”.

Which, in general is correct?

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**Author:** ![OliverTwistofLime](https://avatars.discourse-cdn.com/v4/letter/o/b487fb/32.png) [@OliverTwistofLime](https://boards.straightdope.com/u/OliverTwistofLime)\
**Post date:** [October 27, 2000, 5:02am UTC](https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559/2 "2000-10-27T05:02:50Z")

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Of course I meant fill it out and mail it in.

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**Author:** ![Major\_Feelgud](https://avatars.discourse-cdn.com/v4/letter/m/3be4f8/32.png) [@Major\_Feelgud](https://boards.straightdope.com/u/Major_Feelgud)\
**Post date:** [October 27, 2000, 6:00am UTC](https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559/3 "2000-10-27T06:00:21Z")

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I’ve heard you don’t have to. But I do, just in case. But I fill out the worse dempographics, someone who’s poverty line so they won’t bother putting me on a mailing list.

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**Author:** ![obfusciatrist](https://avatars.discourse-cdn.com/v4/letter/o/4af34b/32.png) [@obfusciatrist](https://boards.straightdope.com/u/obfusciatrist)\
**Post date:** [October 27, 2000, 6:18am UTC](https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559/4 "2000-10-27T06:18:18Z")

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EVERYBODY goes on a mailing list. Now you are just going to get really crappy junk mail.

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**Author:** ![handy](https://avatars.discourse-cdn.com/v4/letter/h/b5a626/32.png) [@handy](https://boards.straightdope.com/u/handy)\
**Post date:** [October 27, 2000, 2:27pm UTC](https://boards.straightdope.com/t/certificate-of-warranty-yes-or-no-or/38559/5 "2000-10-27T14:27:18Z")

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No, you don’t have to but the receipt is the most important thing you need for a guarantee. No receipt, no guarantee.