Espar type heater to replace older furnace.
I was just wondering if anyone has chaged out there propane furnace for a diesel type. I am thinking of doing this as my propane furnce is getting old, uses a lot of propane, uses a lot of power, is ...
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HMS Beagle wrote:S Davis wrote:HMS Beagle wrote:
On the other hand, no way a diesel Espar type is going to be 90%. To get into the 90s a heater has to be condensing, and they are not even close to that.
Getting 87% combustion efficiency is fairly normal on oil, there are even blueflame burners that are in the low 90% range that are non condensing.
I'd be shocked if an Espar/Webasto type hot air heater could achieve that efficiency. Yes, maybe a large home unit. Looking at the specs, one model for example uses 0.23L/h while producing 6150 btu, that is an efficiency of about 73%. A decent propane furnace is probably around the same, or maybe a little less.
No argument there, I have not had the chance to hook up my combustion test equipment to one yet. It was the statement about having to be a condensing unit to get to 90% efficiencies that I was responding to. I will be converting to diesel heat and hot water, I am going hydronic radiant heat to get rid of the forced air.
