No hot water, a puddle at the base, or a tank near the end of its years.
Tank, tankless and heat pump water heaters: how to tell what you have, the signs it is failing, and what a fair replacement quote looks like.

What a tank water heater replacement really costs: unit, labor, permit, haul-away, and what moves the quote. Every number dated and sourced.
Installed tankless price against a tank, gas against electric, and when the upgrade pays back. Dated prices only.
How to choose type, fuel and size, with a short vetted shortlist.
Size by household and first-hour rating; how oversizing and undersizing both cost money.
What a heat pump water heater is, where it works (space, climate, noise), what it costs and which rebates exist (dated, from ENERGY STAR or the utility).
The usual causes named (pilot or ignition, breaker, element, thermostat, sediment) with the honest call for each. Smell gas: leave and call the gas company. No repair steps.
Where the water comes from tells you the answer: a fitting or valve is a cheap part, a wet tank bottom means replace. Shut off water and power, then call.
What the T&P valve does, why it drips, why it must never be capped or plugged, what the part costs, and why a pro replaces it.
What the anode rod is, what it costs, the signs it is spent (rotten-egg smell, rust), and when paying a plumber to swap it beats a new heater. No procedure.