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I've been doing quite a bit of research on boilers as I am switching over to propane from oil.
Lochinvar Knight KHL fire tube or the Weil McClain Ultra series 4?
It will be connected to a hot water cast iron radiator system that I'm considering breaking up into 2 zones; right now it's on one. I'm looking to go as green/efficient/smart as possible but want to make sure I'm not missing anything here. I'm no expert and don't no all the little things to consider so any input is appreciated!
Thanks in advance!