Update to the propane heater I posted in the last link:
we have had some pretty cold weather here in Maine this winter. The heater I made with the burner under the tank works great. Normally I just fire it up for a half hour while doing morning and evening chores and it puts enough heat into the water to keep it free of ice for the night. when it is going to be really cold I leave the burner going as low as it will go for the night and even when the temp is single numbers the water stays open. The flame stayed burning though the blizzard! I have used 3 propane tanks (20 pound) so far. I really like this set up because the horses now have water available all the time. I have been very surprised how much water they have been drinking now that they have free access to it 24/7.
Billy
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