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Radiator Average Water Temperatures
I have noticed, when sizing fin-tube radiators, that manufacturers of high efficiency products provide ratings for average water temperatures (AWT) down to 90F. Other manufacturers of standard radiators provide correction factors down to the same number. I am a bit skeptical of a radiator operating effectively at these low temperatures especially at our design temperatures of -13F here in the North. The convection off these radiators has to counteract the cold air spilling off a window and I would think you would not want to go below 130F as an AWT. Does anybody know where there is some independent technical information on performance of baseboard vs AWT? Does anyone have experience with going low with AWTs - how low can you go? This would be for a "code" building, not a super insulated - triple glazed project. Thanks Cam