The chart below shows a comparison of annual home heating fuel costs based on the most recent infor-mation obtained from suppliers in Snohomish County. The chart also shows that electric heat pumps continue to provide a very cost-effective heating source. (Electric costs based on PUD residential billing rate of 10.4 cents per kilowatt-hour.)
The costs are based on the space heating needs for an average single family home. Individual consump-tions can vary significantly, depending on thermostat settings, air leakage, house construction, and other factors.
-
Electric Heat Pump
-
5888kWH
-
$612
-
7350kWH
-
$764
-
8825kWH
-
$918
-
Gas Furnace
-
667 therms
-
$1014
-
883 therms
-
$1266
-
1000 therms
-
$1520
-
Electric Baseboard
-
11730 kWH
-
$1220
-
14650 kWH
-
$1524
-
17575 kWH
-
$1828
-
Electric Furnace
-
14650 kWH
-
$1524
-
18313 kWH
-
$1905
-
21975 kWH
-
$2285
-
Propane Furnace
-
725 gallons
-
$1631
-
906 gallons
-
$2083
-
1087 gallons
-
$2446
-
Oil Furnace
-
480 gallons
-
$1445
-
600 gallons
-
$1806
-
719 gallons
-
$2164
- $300
- $600
- $900
- $1200
- $1500
- $1800
- $2100
- $2400
- $2700
System assumptions:
- Electric heat pump: HSPF 8.5, $0.104/kWh, 3413 Btu/kWh, 25% duct loss
- Gas Furnace: 80% efficiency, $1.52/therm, 100,000 Btu/therm, 25% duct loss
- Electric baseboard: 100% efficiency, $0.104/kWh, 3413 Btu/kWh • Propane furnace: 80% efficiency, $2.25/gallon, 92,000 Btu/gallon, 25% duct loss
- Electric furnace: 100% efficiency, $0.104/kWh, 3413 Btu/kWh, 25% duct loss
- Oil furnace: 80% efficiency, $3.01/gallon, 139,000 Btu/gallon, 25% duct loss
Bill and his crew did a stellar job installing a Mitsubishi heat pump into my shop. They came in right on budget and upgraded the unit free because the one I selected was out of stock. Communication was flawless throughout the process, they cleaned up after themselves and my shop is much more user-friendly now. Thanks Bill!