plumbing - Do hot water tanks have to be in the drain pan - Home Improvement Stack Exchange

I bought a new hot water tank and had it installed by a plumber. It didn't fit in the existing drain pan, so he put it on top of the pan. Is this safe?

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repair - Is it a bad idea to tie output of hot water heater to sump pump drain? - Home Improvement Stack Exchange

Hot water tank water supply connected through drain pipe : r/Plumbing

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Proper Setup for Water Heater Gas and T&P Relief Valve - Home Improvement Stack Exchange

The Plumber's Choice 28 in. Plastic Water Heater Drain Pan 28PWHP - The Home Depot

Is my space a good candidate for a hybrid electric heat pump water heater? - Home Improvement Stack Exchange

SANCO2 Heat Pump Water Heaters, 40% OFF

plumbing - Is this temperature and pressure release piping up to code? - Home Improvement Stack Exchange

plumbing - Raising waterheater on bricks to gain clearance under - Home Improvement Stack Exchange

plumbing - Hot water heater T&P discharge going into furnace condensate pump? - Home Improvement Stack Exchange