We have an older home in Minneapolis (built 1914) heated by a boiler and radiators. The expansion hot water tank is in our upstairs bathroom, with a pipe extending from the radiator, and a drain valve into our bathtub. It is unsightly and cumbersome, to say the least.

Can we move the expansion tank to our basement so it is near our hot water heater? What is the typical cost of this project?

Any feedback is most appreciated.