WATERFUNACE
Electricity
(per kilowatt hour)

Envision Geothermal System

3,413 BTU x 500%
$0.12 per KWH

142,208 BTU’s

Premier Geothermal System

3,413 BTU x 400%
$0.12 per KWH

113,766 BTU’s

Standard Geothermal Heat Pump

3,413 BTU x 300%
$0.12 per KWH

85,325 BTU’s

ELECTRICITY
(per kilowatt hour)

Electric Furnace

3,413 BTU x 100%
$0.12 per KWH

28,441 BTU’s

Zuba Central**

3,413 BTU x 240%
$0.12 per KWH

68,260 BTU’s

OIL
(per litre)

Oil Furnace

36,668 BTU x 68%
$0.92 per Litre

27,102 BTU’s

Hi Efficient Oil Furnace

36,668 BTU x 86%
$0.95 per Litre

33,194 BTU’s

PROPANE
(per litre)

Propane Furnace (Farm Rate)

25,217 BTU x 90%
$0.51 per Litre

44,500 BTU’s

Hi Efficient Propane Furnace

25,217 BTU x 90%
$0.66 per Litre

34,386 BTU’s

NATURAL GAS
(per cubic meter)

Natural Gas Furnace

35,314 BTU x 68%
$0.34 per Cubic Meter

70,628 BTU’s

Hi Efficient Gas Furnace

35,314 BTU x 92%
$0.34 per Cubic Meter

95,555 BTU’s

Wood Furnace / Boiler

23,000,000 BTU x 68% per cord
$60.00 / cord + $3.75 / day

69,511 BTU’s

Furnace / Boiler

391,720 BTU x 80% per bushel
$5.00 per bushel

62,675 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.

Table Notes

*The above calculations are based upon average operating furnace efficiencies that occur during a typical heating season.
*Wood is factored at burning for 6 months / year ( Oct – Mar) @ 15 min per day – load time @ $14.00 per hour, using 150 mbtu per year @$390.00 / 6 cord total cost for year $960.00. $300.00 is equivalent of what selling wood would yield.