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Water Heater

Everything that can go wrong with a tank or tankless water heater — and how to fix it. Our water heater guides cover leaks (from the bottom or the top), no hot water, pilot and ignition problems, relief valve issues, and real 2026 repair-vs-replace costs. Each guide separates safe DIY steps from work that needs a licensed plumber.

Water Heater Leaking From Bottom? Here’s What It Means and What to Do

July 25, 2026July 9, 2026 by The Heat Handbook Team
Residential water heater in a basement with water pooling on the floor

Last updated: July 2026 · Reviewed against A.O. Smith, Rheem and Bradford White service documentation Not sure where your leak is coming from? Start with our overview of why a water heater leaks. A water heater leaking from the bottom is usually caused by one of three things: a loose or failed drain valve, water … Read more

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