common venting pvc

we have a 95% efficient gas furnace vented with pvc out side of house .
going to get rid of old style water heater(it’s backdrafting) replace with a power vent water heater .
can i run pvc from WH and wye into vent of furnace right before it exits house ?

No and should get a qualified Plumber to install it.

Do what Bob Elliott suggests.


no …no…no…