HOW MUCH HEAT ARE YOU GETTING FOR YOUR DOLLAR?
ENERGY SOURCE 
HEATING EQUIPMENT 
ENERGY EQUATION* 
AMOUNT OF HEAT PER $1.00 SPENT 
ELECTRICITY

WaterFurnace™ System** Geothermal Heat Pump 
3,413 BTU x 400%$0.11 per KWH 
124,109 BTU’s 
Electric Furnace 
3,413 BTU x 100%$0.11 per KWH 
31,000 BTU’s 

Air Source Heat Pump 
3,413 BTU x 200%$0.11 per KWH 
62,100 BTU’s 

OIL

Oil Furnace 
36,668 BTU x 55%$1.12 per Litre 
18,007 BTU’s 
Hi Efficient Oil Furnace 
36,668 BTU x 83%$1.12 per Litre 
27,174BTU’s 

PROPANE

Propane Furnace 
25,217 BTU x 82%$0.76 per Litre 
27,208 BTU’s 
Hi Efficient Propane Furnace 
25,217 BTU x 92%$0.76 per Litre 
30,526BTU’s 

NATURAL GAS

Natural Gas Furnace 
35,314 BTU x 55%$0.404 per Cubic Meter 
48,076 BTU’s 
Mid Efficient Gas Furnace 
35,314 BTU x 80%$0.404 per Cubic Meter 
69,929 BTU’s 

Hi Efficient Gas Furnace 
35,314 BTU x 92%$0.404 per Cubic Meter 
80,418 BTU’s 
The energy used to heat your house is measured in BTU’s (British Thermal Units). The size of your furnace is measured in heating BTU’s it can provide; for example a common furnace size is 50,000 BTU’s.
BTU’s per $1.00 Spent = (BTU’s per Energy Used Conversion Factor) x (Furnace Efficiency)
(Current Cost of Energy)
Energy Used Conversion Factors
Electricity……1 Kilowatt Hour = 3,413 BTU’s Propane…..……1 Litre = 25,217 BTU’s Oil……………1 Litre = 36,668 BTU’s Natural Gas……1 Cubic Meter = 35,314 BTU’s 
Table Notes
* The above calculations are based upon average operating furnace efficiencies that occur during a typical heating season.
Energy costs are based on data from the Fenelon Falls April, 22 2008.
** Efficiencies shown are for a WaterFurnace Envision 48,000 BTU model.
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