hokieamonglions
New Member
I'm interested in the best place to put an expansion tank in my cold water line with a new tankless water heater install.
Currently with my tank water heater (to be replaced), an expansion tank is located right next to the cold inlet to the unit. The way the house is set up... Cold water is fed to bathrooms, kitchen, showers, etc, then on that cold line the expansion tank is next and then the HW heater. So in the big scheme of things... the expansion tank is located between appliances/faucets/etc and the cold water inlet to the HW heater.
With my new tankless HW heater unit, I will have the following configuration. Cold water will come into the house, go to a water softner. Out of the softner, cold line will go to the new tankless HW heater unit, then continue on through out the house to feed cold water to appliances/faucets/showers/etc.
So here is my question. Should I install the expansion tank on the cold line between the water softner and the tankless HW heater? Or. Should I install it between the continuation of the cold line after the tankless HW heater and the rest of the cold line faucets/appliances/etc? In either case, I plan to install the expansion tank to be within 1-2 feet from the cold input to the tankless HW heater. Or. Does it really matter what side....as long as it is close to the tankless HW heater?
Sorry if long winded, hopefully I explained my question enough.
Thanks in advance for any help.
"HokieAmongLions"
Currently with my tank water heater (to be replaced), an expansion tank is located right next to the cold inlet to the unit. The way the house is set up... Cold water is fed to bathrooms, kitchen, showers, etc, then on that cold line the expansion tank is next and then the HW heater. So in the big scheme of things... the expansion tank is located between appliances/faucets/etc and the cold water inlet to the HW heater.
With my new tankless HW heater unit, I will have the following configuration. Cold water will come into the house, go to a water softner. Out of the softner, cold line will go to the new tankless HW heater unit, then continue on through out the house to feed cold water to appliances/faucets/showers/etc.
So here is my question. Should I install the expansion tank on the cold line between the water softner and the tankless HW heater? Or. Should I install it between the continuation of the cold line after the tankless HW heater and the rest of the cold line faucets/appliances/etc? In either case, I plan to install the expansion tank to be within 1-2 feet from the cold input to the tankless HW heater. Or. Does it really matter what side....as long as it is close to the tankless HW heater?
Sorry if long winded, hopefully I explained my question enough.
Thanks in advance for any help.
"HokieAmongLions"