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
Bane and the crew from Casacade Energy Services did an excellent, professional installation of our new Trane furnace (nice and quiet!), along with a house surge protector and earthquake cutoff mechanism for our gas line. Bill was courteous, knowledgeable and very helpful. Also, his office staff helped us through all the warranty work and helped answer questions about rebates. We couldn't ask for a better experience. We will be using them for the annual furnace check up. Thanks, Bill and crew!