Re: Elec. on demand hot water

Posted by rick Anthony on August 04, 2001 at 13:32:47:
In response to Re: Elec. on demand hot water
My experience is limited - one, about 20 years ago. I am going to install up to 5 in this house (built 1959). The house is slab-built, and I have to repipe. Think about THAT! I recently had to chop through the slab to reach a pipe that was leaking. I am dissatisfied with 'the fix', because I know it cannot last another five years, and the observed thinness of the pipe testifies the rest of the pipe under there will go soon. I love on demand units, but in my case must go electric. Nowadays that means 240 to each unit. The one I have used was 120. I am pursuing alternatives to under-slab piping. About insulating the pipes 'down there': Are you sure you want to? There can be advantages to not doing so. The heat-sink surrounding them stores their warmth, because heat migration through concrete is slow. Similar principle to why adobe houses stay cool in summer warm in winter.

Posted by rick Anthony on August 04, 2001 at 13:32:47:

In response to Re: Elec. on demand hot water

My experience is limited - one, about 20 years ago. I am going to install up to 5 in this house (built 1959). The house is slab-built, and I have to repipe. Think about THAT! I recently had to chop through the slab to reach a pipe that was leaking. I am dissatisfied with 'the fix', because I know it cannot last another five years, and the observed thinness of the pipe testifies the rest of the pipe under there will go soon. I love on demand units, but in my case must go electric. Nowadays that means 240 to each unit. The one I have used was 120. I am pursuing alternatives to under-slab piping. About insulating the pipes 'down there': Are you sure you want to? There can be advantages to not doing so. The heat-sink surrounding them stores their warmth, because heat migration through concrete is slow. Similar principle to why adobe houses stay cool in summer warm in winter.

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