Alex wrote:
Hi all -

I have a 50 gal gas powervent waterheater, but I run out of hot water
frequently. Can I buy another electric one & feed the hot from my
existing heater into the inlet for the new electric one?

Figure that might be the cheapest way since the electric one will only
really need to maintain the temp, rather than heating it & I won't
have to spend $$$ on another powervent model.

Thanks!

Get a proper sized tankless and replace your tank model. I did this 6 months
or so ago and would never go back to tank model.

Rich