I know this is a borderline question but I'm hoping for just a general idea. My boiler has sprung a leak and filling it up with water lasts only about 4 hours before a refill is needed again. I put the call into my plumber but what should I expect? Is this usually a part to fix (pipe, pan?) or am I looking at replacing the whole thing? I know this is a wait till your plumber looks at it question but I am just looking to find out what I should expect if possible.