Roger Wakefield Plumbing Education
The plumbing videos from Roger Wakefield Plumbing Education explain how each fixture works, so you can find the fault rather than guess. They cover a dripping faucet (replace the spring and washer), a clogged double kitchen sink, what water heater noises mean, flushing a water heater, why toilet water stays in the bowl and how to replace a dishwasher.
Each one teaches the order: shut off the water, relieve pressure, take the part apart, replace what is worn and test for leaks. Water heaters add heat and sometimes gas or power, so shut those off too and read our water, power and gas shut-off guide. Browse the whole Plumbing section for related repairs. Take photos of the old parts before you remove them, and bring the worn part to the store to match it.