Do you mean boiler! what is the name brand of boiler and hot water tank would be a good start. Sounds like you have an indirect water heater. There are many replacements out there. Where is the leak coming from and how old is the system.
My water tank is actually heated as a separate zone from my forced hot water furnace. I need to replace (leaking) but am having trouble finding a replacement (or someone who understands my setup)- is this not common? A pipe from by furnaces goes in, heats up the water in the tank, and then exits back to the furnace just like the other zones. Perhaps this setup has a special name- any help is appreciated- tired of picking up puddles.
quite often you neednt throw the baby out with the bath water,it may only require a couple of wrenches to repair the problem. there are many makers of these tanks ..each has its own vagarities some times the leak is caused as it were by the temp that is being maintained or the piping arrangement...someone with experience can read it like the sentence on the page. there is a tab on the menue called Find a Professional...check it out:) maybe your indirect is ok. why buy another one if it isnt Broke?