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I would buy the same brand as the one you currently have, damn 30 years, you can't beat that.

I wish I could tell you but I don't know. What I do know is that my system consumes on average 21 Kwh per day. My domestic water heater takes something less than that but it's not heating a floor.

The temperature pot is set right about in the middle of min and max. The pump is running on the middle setting also (low med high). It uses the old style mercury switch thermostat on the wall for room temp setting.

Now I know it may look like I installed this myself, but believe it or not that was done by the "professionals". So I don't know what the output temp is set at, but the sub-panel has a 50 amp breaker for the boiler and 15 for the pump. The whole thing is breakered with a 50 amp at the main panel.

Oh, I see, I thought from your first post that you were already up and running. Well here are a couple pics of my system, if that helps. See the expansion tank loops behind the cabinette and just comes back into the system, kind hard to tell from the pic, but there is a 90 degree elbow just...

Yeah, my 71 cents a day is before taxes and fees, if I include those fees, it brings it up to about 90 cents a day. Still not too bad, but they do like to **** you even though they claim low rates.

Ideas for what, is 10 Kw not doing it? I've got the same size slab and my 7.5 Kw does quite nicely at 71 cents a day.

My average monthly cost is $21.64 to keep the garage temp between 55 & 60 degrees (Nov thru Apr). Of course it makes a big difference I'm sure if you don't have any insulation in your walls and doors. I have three large windows (36"x46") and two walk in doors that each have large windows, I...

Mine is 27x27, 3 loops and I use a 7500 watt tankless and it does just fine here in Minnesota.

Anyone have any ideas?

Is your system relatively new?

Seisco boiler?

Hi, new guy here. I have a two chamber seisco tankless boiler in my garage and it has only been in service since Dec of 2006. In Oct of 2009 I turn it on to get ready for winter and the CB blew up. Called the original installer and they put a new CB in and it worked fine through the season...