Our project is to install a 50-gallon hybrid water heater. Our existing 38-gallon electric water heater is too small and we do not know how old it is. It cannot fill our very large bathtub.
The existing unit is located in a small space below a stairwell, behind our clothes dryer. There is not enough space to install a larger unit in that location. It is, however, near the garage where there is plenty of space (after a few modifications). So our idea is to install a hybrid heater there.
Instead of simply removing and replacing the existing unit, we are wondering about the feasibility of continuing to use it for additional capacity. Our thought is to connect the two heaters in a series with the old unit "downstream" from the hybrid heater.
We will add the hybrid heater regardless of whether we continue to use the old unit. We do not know how old the existing heater is, so maybe it would be best to simply remove it. We are just thinking that it probably would not use much electricity keeping already hot water hot, but it would significantly increase the overall capacity. Our bathtub is so large that we are not even sure if a 50-gallon heater will be adequate.