True lifetime warranties on entire residential water heaters are virtually nonexistent in the modern plumbing industry, as standard structural tanks possess a finite operating lifespan of eight to fifteen years. However, select elite manufacturers offer exceptionally strong extended protection, such as Bradford White's specialty models or select commercial-grade units that provide limited lifetime tank warranties under specific rigorous registration and maintenance conditions. Most standard residential units instead feature limited warranties lasting between six and twelve years on the inner storage tank.
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