I was watching Ask This Old House this morning.
They installed a high efficiency combo boiler and WH, a neat little unit
that hung on the wall. Rich pointed out the condensate pump and the
Limestone Neutralizer cartridge stating that the condensate water can be
acidic. He noted that the pump sends the condensate to the sink.
Why do we have to be concerned about acidic condensate going down a sink
drain? Could it be septic tank related? They didn't say anything about a
On Sun, 18 Nov 2012 02:20:40 +0000 (UTC), DerbyDad03
I would think it matters if you have metal drain pipes as it will eat
them away over time from the carbonic acid. Local regulations may
also prohibit drain water with a pH that is out of normal bounds. but
in a sink drain it will be diluted quite a bit in most homes..
On Sun, 18 Nov 2012 03:43:33 +0000 (UTC), DerbyDad03
Probably not. I don't know how much condensate goes down there, but
every time you run the sink, wash dishes, flush the toilet, it is
getting washed down and diluted. But I'm not an expert on drain
At work the condensate lines do corrode out after some years of use,
but they get gallons of condensate about 16 hours a day.
These boilers are very common in Europe.In fact the only sort you can
The reason is that some times when no drain is available they leave
the condensate just dribble out onto whatever is beneath.
If it happens to be concrete, it will corrode it away or mark it
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