Usage and Safety 
seasonal home comfort appliances

 

 Seasonal Home Comfort

 
Wattage

Estimated
Monthly Hours

Energy Use
kwh/month

Cost/Month
@ 11 cents/kwh

 Air Conditioning (75% on time — 8 hours per day)

 

 

 

 

 Central Air Conditioner, 24,000 Btu (2-ton), 10.0 SEER

 2,400

 180

 432

 $47.52

 Central Air Conditioner, 36,000 Btu (3-ton), 10.0 SEER

 3,600

 180

 648

 $71.28

 Central Air Conditioner, 48,000 Btu (4-ton), 10.0 SEER

 4,800

 180

 864

 $95.04

 Room Air Conditioner, 6,000 Btu, 9.0 EER

 667

 180

 120

 $13.20

 Room Air Conditioner, 9,000 Btu, 10.0 EER

 900

 180

 162

 $17.82

 Heat Pump (Split System), 36,000 Btu, 10.0 SEER / 7.0 HSPF

 3,600

 180

 648

 $71.28

 Space Heating

       

 Electric Furnace, 10 kw

10,000 

 240

 2,400

 $264.00

 Baseboard Heater, 6-foot section @ 250 watts/ft.

 1,500

 240

 360

 $39.60

 Portable Space Heater (1000-watt, medium setting)

 1,000

 120

 120

 $13.20

 Heating/Cooling System Support

       
 Oil Furnace Burner Motor, 1/4 hp

 220

 240

 53

 $5.83

 Forced-Air System Blower Fan, 1/2 hp

 440

 240

 106

 $11.66

 Hydronic (Hot Water) Circulating Pump, 1/8 hp

 110

 240

 26

 $2.86

 Fans

       
 Whole-House Attic Fan, 30-inch

 400

240 

 96

 $10.56

 Window Fan (dual-unit)

 200

 240

 48

 $5.28

 Ceiling Paddle Fan, 4-foot (no lights)

 100

 240

 24

 $2.64

 Portable Box Fan, 20-inch

 100

 120

 12

 $1.32

 Oscillating Table Fan, 12-inch

 35

 120

 4

 $0.44

 Air Quality

       
 Humidifier (25 pint capacity)

 175

240 

 42

 $4.62

 Electrostatic Air Cleaner

 50

 240

 12

 $1.32

 Dehumidifier

 635

 360

 229

 $25.19

 

KEY
SEER (Seasonal Energy Efficiency Ratio) – Used to rate the cooling efficiency of central air conditioners and heat pumps. A higher SEER rating means higher efficiency. Federal energy efficiency standards require a minimum of 10 SEER for newer units.

EER (Energy Efficiency Ratio) – Used to rate the efficiency of room air conditioners. A higher EER rating means higher efficiency. A unit EER rating of 9 is considered efficient, with ratings of 10 or more as highly efficient.

HSPF (Heating Season Performance Factor) – Used to rate the heating efficiency of heat pumps. A higher HSPF rating means higher efficiency.