On Mar 19, 1:19*pm, " wrote:
my tankless add on was only for use when familiy is visiting, the
remainder of the time my 50 gallon high btu tank is fine.

now 7 people pile in here, and it can become a problem espically when
incoming water temperature is 40 degrees

Its alot of money to put in a tankless and not get the savings year
around, first you need to get the supply tested with all other gas
apliances running to be sure no upgrade is neded. Do 2 people shower
now at the same time, I dont think you will benefit having a tankless
before a tank and it will actualy cost more to run since both units
burners are probably near in efficency, I put my tankless after my
tank with bypass valves incase my old tank leaks, but i havnt used it
since installing the tankless, the cheap Bosch.