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Posted by Dave on June 01, 2004 at 14:25:44:
Hello - I'm trying to choose a new high-efficiency gas boiler (hot water) to replace the dinosaur in our basement.
It seems a modulating, condensing, direct vent type is the way to go for our house (1870's with combination of baseboard and in-floor radiant heating).
As an engineer, I understand the inherent benefits of a rapidly-heating material like aluminum for the heat exchanger. However, I have seen claims by some manufacturers that corrosion can be a problem, and that stainless steel is better.
Anybody had problems with aluminum (or stainless) in these new types of boilers - or are they all too new to the market to be showing logevity problems? Also, I wonder where in the system (combustion side main exchanger and/or condensor exchanger?) the corrosion can be problematic?
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