Re: Useing Propane furnace verses Space Heater???
As far as I know the BTU content of liquid propane is around 92,000 BTU/gallon which equates to approximately 22,000 BTU/pound. I've never heard of a significant difference in the BTU content of liquid propane at different temperatures.
In your situation I think it would be very difficult to "calculate" the actual cost of propane use without some empirical measurement of temperature (inside and outside), time on, and propane used. One reason is that furnace efficiency, which is probably 80% or less needs to be factored in. Another is that the furnace would most likely not run full time.
I suspect that in your situation space heaters would always be more cost effective and definitely more convenient.
--- In email@example.com, "Bob" <ke5ftf@...> wrote:
> I have a 1989 Winnebago Chieftain (31 ft.).
> I pay 10 cents a killwatt hour for shore power, no other fees...
> Propane is $3.25 a gallon...
> My furnace is rated at 34,000 BTU...
> Winters in Austin are not that severe but I do need to heat at night & in the mornings...
> As I have read a gallon of propane gives you 94,000 BTUs max & 64,000 BTU at 0 degrees F...
> Doing the math looks like the furnace uses 1.8 gallons of propane per hour at the outside 0 degrees F (worst case)...
> Sooooo... $3.25 times 1.8 gallons + $5.85 an hour to use the furnace on
> propane.... Ouch.. :(
> When I was using the space heater through the night & in the morning I was using around $2 of power for a 24 hour period...
> My math may be wrong above, don't think there would be that much difference...
- I have easy access at my neighbors,but the view inside the barn leaves alot to be desired. I am very lucky to have free indoor storage. Joyce
Sent from my U.S. Cellular® Android phone
"Dave S." <daslater@...> wrote:
>My trailer is in the storage yard at one of the local dealers,
>accessible only during business hours....
>On 2/6/2012 12:22 PM, Joyce wrote:
>> I'm jealous, I would love to spend the night in the motorhome. We have 4 inches of snow and the motorhome is stored at the neighbors, so not to be. I do long for spring. Joyce
>> Sent from my U.S. Cellular® Android phone
>> Enid Metcalfe<stitcheryfriend@...> wrote:
>>> We have a wall mounted Dimplex heater with thermostat. It takes forever to bring the MH up to temp where as
>>> the propane ducted (minimal this is a 1976 Corsair) only takes about 15 mins to make it a comfortable 75F in minus
>>> 14C weather. Recently my DH and I choose to sleep in the MH so the kids from BC could have the house. My 7 year old and 3 week old grands and parents were there for 10 days. I went out to the MH and turned on the furnace 15 mins before we went out there and it was toasty warm, turned the wall thermostat down to 68F and along with the mattress heater we were great. Needed the extra heat as DH was diagnosed with stomach cancer (yup another surprise been a scary year) and is always cold now. I cannot see any of those figures as being anywhere near what propane costs. I bet in an actual run the electricity would be more costly as it needs to run longer and higher than the furnace.
>>> The Dimplex wall heater is great for short runs, but beyond that its just too expensive to run constantly on shore power.
>>> I keep the furnace at 50 all winter and have never emptied a propane tank yet.
>>> [Non-text portions of this message have been removed]
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