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Natural Gas vs. Propane

# Natural Gas vs. Propane

Posted in the Attica Forum

Attica Local
#1 Feb 10, 2009
How much cheaper is Consumers Energy natural gas than propane? I spent \$400 on propane last month to heat my house and I am fed up. My neighbors have natural gas, and consumers is giving me a quote to hook it up. Does anybody here know the price difference between the two gas types? How much cost savings do you think I will see each month?

Specs on my house
1200 sq ft ranch
Full walk out basement
Built in 2003 with decent insulation and decent windows.

“why did I miss this?”

Since: May 07

lapeer, Michigan

#2 Feb 28, 2009
Just saw your post, or I would have tried to answer your question earlier. The difference in savings depends totally on the type of furnace you have. You generally get about 1000 BTU's out of a cubic foot of natural gas, and about 2500 BTU's per cubic feet of propane, but is sold by weight.

* 100,000 BTU/hr furnace will use about 97 cubic feet of natural gas (100,000 ÷ 1,030 = 97.1) in one hour
* 100,000 BTU/hr furnace will use about 40 cubic feet of propane (100,000 ÷ 2516 = 39.7) in one hour

Let's assume the cost for natural gas is \$15.00 per 1,000 cubic feet. This means that \$15.00 will purchase approximately 1.03 million BTU's of energy. This would be equivalent to 11.26 gallons of propane. At \$2.50 per gallon of propane, natural gas would be a more cost effective energy solution. Breaking it down even further, natural gas needs to be more than \$28.00 per 1,000 cubic feet for propane to be a more cost effective energy solution (provided the cost for propane is \$2.50 per gallon.)

But, in reference, the BTU Output of your furnace decides how much propane or natural gas will be used to heat the structure. You also must change the orifice size for each burner in your furnace, and change the gas pressure by adjusting it at the gas valve.

I hope this information helps.
jim
Propane 101
#3 Apr 18, 2009
Jim's post contains duplicate material from my website - http://www.propane101.com/propanevsnaturalgas...
Please remove the copied content from the post.
Thanks...and Jim, do your own work next time.
-Matt

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