[Greenbuilding] Experiences with Seisco

[Carmine Vasile]

We have been using a commercial 15kW tankless electric (Acutemp C150) for combined space & water heating for 11 years in Patchogue, NY. (It has the original 5kW elements.) In 1998 it became cheaper than oil to heat with an electric-hydronic system; after LIPA took over LILCO and oil was about $1.00 per gallon. Last week, diesel oil hit $3.99/gal and home heating rose to near $3.50. My DIY system is shown in Fig. 2 of Rocky Mountain Institute’s Home Energy Brief #5 . To convert into a ZEH, we need a 22MWh, net-metered, PV array.

Beatrice Dohrn wrote:
Im in final stages of planning an owner built home here in the hills of Eugene Oregon.  I have previously built in the Northeast and am only now adjusting to some of the different assumptions about building that prevail here.  
For example, in the NE when I built 20 yrs ago using electrical heating appliances was a big no no.  Now dragging LP to my site by truck is raising questions.  
I am looking at what sort of tankless hot water system to use for dom. hot water.  Not up to the radiant floor heat yet,  but I am pretty sure I wasn sep. systems;.  I like a lot of what I read on the Seisco site.... but suspect that there's a back story.  Anyone have any experience with these and any wisdom for me on whether I should be switching from the Rinnai tankless concept;
Beatrice Dohrn
541 746 1919
347 589 9053