RV LP Furnace Efficiency?
I'm trying to find the actual efficiency rating of our Suburban RV furnace... but so far have found no published specifications. Anyone have the real world efficiency rating of the typical RV LP fu...
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rhagfo wrote:ktmrfs wrote:rhagfo wrote:SidecarFlip wrote:
You are high. Try 60-65 percent efficiency.
Actually closer to 80%, our 30,000 btu Surban is 30,000 I put, 27,600 btu output. We do have a Cheap Heat add on unit and on a 50 amp 240 volt it is 5,000 watts about 17,060 btu,’and heats our 32’ three season Copper Canyon very well.
that's 92%. not possible without it being a condensing furnace that has a water drain. so unless the suburban has a secondary heat exchanger and the water vapor is condensed to a liquid and the heat of vaporization extracted it's efficiency upper limit is around 80%
otherwise the upper limit on effiency is 80% or so, which would be 24,000 BTU output.
My bad!
Percentage was right, really transposed the numbers!:S
I'd say a 17,000BTU electric furnace should be pretty comparable heating wise to a 30,000BTU gas RV furnace. equal to a 60% efficient furnace, probably not as quick recovery if the furnace is near 80%.
Suburban advertizes the newest furnaces as "high efficiency" but they don't clearly list efficiency. but they very well may have improved the efficiency with the new line of quiter furnaces. getting to 80% is careful attention to the heat exchanger and few other things. It's the next 15% that is much harder.
