Posted by Eric on February 19, 2000 at 08:01:42:
I had this unit installed 10 years ago. The first few years it seemed to heat our house fine. Now we have to keep the thermostat at 72 degrees to keep it comfortable. We have had 2 expansion tanks replaced as well as a relief valve. The latest Heating repair suggested we may have to have it "Boiled Out". Is this a common thing, and will it help in our situation. We have city water. I would also like to know if there are any Vaillant dealers in my area. Buffalo as I cannot find any listed anywhere.
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