![]() ![]() This is why people rely on warranties and insurance for things expensive enough that they can't afford to just eat the cost of replacement- even though on average it would be cheaper to not pay for insurance or a warranty. If the end user is counting on a particular lifespan to make the unit affordable, and it fails before that- they're in trouble regardless of what the average failure rate is. They are not able to take advantage of averaging the failure rate over many units. The manufacturer cares about the average case when determining warranty length, because they have thousands of sold products to average things over. They need to know up-front that they'll be able to hit whatever target they need to make it affordable, even if there's a failure.Įdit: Let me try putting this another way. But most people do not have the budget to simply shrug and eat the loss if they're one of the unlucky ones. Sure, on average, they may last much longer than the warranty. It's worth keeping in mind that the "average case" isn't helpful for a lot of people. lucky for us, but damned close to the line. Our first solar inverter died about two months before the end of its warranty, for example. That's the idea, but with new designs, manufacturers are working off estimates rather than real-world data as well. Manufacturers don't warranty their stuff right up to predicted death or they'll go out of business from warranty claims. but how much longer, and how much will repairs cost? That's a minimum of about 20 years' data on systems installed in the field in your particular area needed. ![]()
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