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Posted by Ken on November 11, 2008 at 18:48:57:
I have a 3400 square foot log cabin at 10,200 feet in the mountains of Colorado. The current boiler is a Laars Minitherm 185K btu that produces hot water and runs my radiant floor heating system. I have been looking into replacing this boiler with a condensing boiler system. The local HVAC guy has spec'd a Lochinvar Knight condensing boiler. The reason I am contemplating doing this change is the desire to save on the cost of propane. I have read on various forums that the newer condensing boilers can save 30-40% on fuel useage. I would appreciate any thoughts or advice in regard to making this kind of change. My calculations tell me that if I invest in the condensing system I could expect a payback in less than 5 years. If so, that might make pretty good sense.