2007-03-27 08:33:37 · 7 answers · asked by AJBell 1 in Home & Garden ➔ Maintenance & Repairs
gee i wonder
2007-03-27 08:36:09 · answer #1 · answered by san_ann68 6 · 0⤊ 0⤋
All gas appliances are given a BTU consumption rating by the manufacturer. This rating tells you how much gas that particular appliance burns per hour. If the flame height is adjustable, the rating will show two numbers: the amount of fuel consumption at the lowest setting, and the amount of fuel consumption at the highest setting. The BTU consumption rating for any gas appliance can be found in the owner's manual.
Now, for comparison sake, let's say your furnace, like your DXV-45 fireplace, is also rated at 45,000 btu/hr. Since there are 100,000 BTU's of heat value in one therm of natural gas, both appliances will consume one therm of natural gas every 2.2 hours when the burners are lit and the fireplace is adjusted to its highest flame setting.
It would seem at this point that these two heaters would consume exactly the same amount of gas to heat the same area, but this isn't necessarily the case. We must also consider how many hours the burners in each of the two heaters will need to be lit each day to keep the living space at the desired temperature. One factor that determines this is extraction efficiency, which is a measurement of how effectively a given burner system extracts heat from the gas. The other factor is delivery efficiency, which is a measurement of how effectively the extracted heat is delivered into the living space.
2007-03-27 08:39:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
YOu did not tell us the AFUE of your furnace or Fireplace. It's impossible to answer without that data.
Modest efficient furnaces (Newer Models) are abut 80% efficient. High efficient can run between 90%--95% efficient.
Most Hi-efficient Fireplaces must be the DIRECT VENT TYPE and they run around 80% AFUE.
For your information, AFUE stands for Annual Fuel Utilization Efficiency.
2007-03-31 04:54:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
what is the BTU outpout for both?
what is the efficiency of the furnace?
the question is an obvious point to wanting one answer, but it can't be given without all the info
2007-03-27 08:36:15 · answer #4 · answered by bilko_ca 5 · 0⤊ 0⤋
Most furnaces are still just 80% efficient.
To get efficiency, you divide the the BTU output by the BTU input.
ex: 80000BTU output/100000but input = .8 or 80%
2007-03-27 08:47:28 · answer #5 · answered by rangedog 7 · 0⤊ 1⤋
Well, since the fireplace is high efficiency, it might use less gas.
2007-03-27 08:37:10 · answer #6 · answered by I know, I know!!!! 6 · 0⤊ 0⤋
find out
2007-03-27 08:36:24 · answer #7 · answered by mlkirchgessner 5 · 0⤊ 0⤋