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Posted by HeatPro on June 19, 2006 at 22:02:31:
In Reply to: Re: Which is better: Munchkin 140 vs. Weil-McLain Ultra 155 posted by Eichler on June 19, 2006 at 21:41:06:
Find the ACTIVE square feet of floor that heats your house. That is ALL the active square feet that doesn't have furniture or cabinets over it that will heat youre house. Multiply that by 30 and it will give an estimate of how much heat is given off. Compare that to the heat loss estimate of your house. You can do that free at:
If your boiler output meets or exceeds that estimate, it is large enough.
If the boiler was other than a Raypak, I'd consider it as cast-iron and steel boilers of that era lost much heat from the heavy body up the chimney during the off-cycle to make them about 65% efficient. A Raypak copper-tube boiler, however, doesn't have the mass to lose the heat.
You can't really get a quality or reliability reading from a boiler that is less than 5 years old. The Weil or Munchkin is as good as the Monitor, Lochinvar Knight, or any other condensing boiler when there is no longevity nor reliability info.
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