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Posted by HeatPro on August 19, 2005 at 16:01:45:
In Reply to: Re: Steel vs. Cast Iron Boilers posted by Joe Brix on August 19, 2005 at 12:55:04:
"Heat-holding" is an amusing sales pitch point. It takes into account the hope that customers never realize that to hold heat, you must put it into the metal, you get the heat out a little later than when you store it; that is why cast-iron radiation and copper baseboard don't mix on the same circuit. There is no 'free lunch' as the pitch goes. If you want to store heat, get a huge storage tank for the boiler burner/heat exchanger to heat up and it doesn't matter what the metal is.