In Dana F Bonnett writes:

On Tue, 26 Jan 2016 19:28:06 -0500, Nil
wrote:

I'm having a new natural gas water heater installed. My old one was
sitting right on the concrete floor of the basement. There is no floor
drain in the basement.

a: pick up a few conrete or brick blocks and place
them on the concrete, then put the water heater
on top of them. Just an inch or two would be fine.

This gets your heater off the concrete, keeping it
a bit cleaner, dust off the bottom, reduces the
rust from water seepage up from the ground, etc.

It also makes the controls and valves a few
inches higher and easier to reach...

b: plastic trays for putting under washing
machines are a standard item in hardware
stores, and would work fine under your
water heater. Just make sure that everything
is stable and, again, but the concrete/brick
spacers between the plastic and the bottom
of your heater.

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