My expansion tank on the heating system is now over 15 years old and I've read that they eventually break down. How can I tell if mine is still okay or if I need a new one? Does it cost a lot to have an installer replace it?
At 15 years old, I'd definitely take a closer look at it - typical signs are rust stains, water under the tank, or your heating constantly losing pressure and asking to be refilled. Best thing is to have a plumber come by, he can check it quickly and tell you whether it'll still hold up or if you need a new one. The replacement itself isn't that expensive (I'd estimate somewhere between 200 and 400 euros), but definitely let a professional handle it, because you're working with pressure.
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