What Uses Watts in Your Home

Electricity usage is calculated in kilowatt-hours. A kilowatt-hour is 1,000 watts used for one hour. As an example, a 100-watt light bulb operating for ten hours would use one kilowatt-hour.

Easy to use formula: Divide the total Watts by 1,000, multiply this number by the number of hours used, then multiply by .07 (the charge per kilowatt-hour through Warren RECC/TVA). The final figure equals the cost for the period.

Appliance/Equipment	Avg. Usage	Monthly kWh	Cost/Month
Comfort & Health
Air Conditioner - Window 12,000 BTU (1,400 Watts)	8 hours/day	336	$23.52
Blanket (177 Watts)	8 hours/night	41	2.87
Dehumidifier (257 Watts)	12 hours/day	90	6.30
Fan - Furnace (300 Watts)	7 hours/day	63	4.41
Fan - Window (200 Watts)	2 hours/day	12	.84
Fan - Ceiling (125 Watts)	12 hours/day	45	3.15
Fan - Attic (1000 Watts)	2 hours/day	60	4.20
Heat Pump (Average Rating) (1,800 sq. ft. house) 7.0 HSPF*	daily		471.00/season**
Heat Pump (High Efficiency) (1,800 Sq. ft. house) 8.5 HSPF*	daily		388.00/season**
Heat Pump (Geothermal) (1,800 sq. ft. house) Equiv. 13.3 HSPF*	daily		248.00/season**
Heater - Portable (1500 W)	8 hours/day	360	25.20
Humidifier (177 Watts)	8 hours/day	41	2.87
Water Heater (4500 W)	3 hours/day	405	28.35
Waterbed (375 Watts)	9 hours/day	101	7.07
Hair Dryer (1,000 W)	15 min./day	7.5	.52
*Heating Season Performance Factor (an efficiency rating) **Based on 4,296 Heating Degree Days. Cooling costs would be approximately 40% of total energy costs.
Food Prep. & Preservation
Blender/Food Processor (400 Watts)	1 hour/week	3	.21
Coffee Maker (894 Watts)	one hour/day	27	1.89
Dishwasher (1,200 Watts) (excludes hot water costs)	one hour/day	36	2.52
Microwave Oven (1,450 W)	30 min./day	22	1.54
Range (12,200 Watts)	30 mins./day	110	7.70
Self Cleaning Cycle	twice/month	12	.84
Freezer 15 Cu. Ft. (341 W.)	12 hrs/day	123	8.61
Refrigerator - 14 Cu. Ft. (440 W.)	12 hrs/day	158	11.06
Refrigerator - 18 Cu. Ft. (manual defrost - deduct 35%)	12 hrs/day	180	12.60
Laundry
Clothes Dryer (4,900 W)	6 loads/week	90	6.30
Washer (512 Watts) (Excludes water costs)	6 loads/week	9	.63
Iron (1,008 Watts)	2 hours/week	8	.56
Home Entertainment/Recreation
Color TV (200 Watts) (instant-on tvs use some electricity continuously)	8 hours/day	48	3.36
VCR (125 Watts)	4 hours/day	15	1.05
Home Computer (500 W) Including Monitor	3 hours/day	45	3.15
Hot Tub (5,000 W)	2 hrs/day	300	21.00
Pool Heater (incl. motor)	avg/daily	670	46.90
Pool Pump (1 hp)	continuous	1240	86.80
Lighting
40-Watt Bulb (40 W) equivalent compact fluorescent	4 hours/day	5	.35 .14
60-Watt Bulb (60 W) equivalent compact fluorescent	4 hours/day	7	.49 .22
75-Watt Bulb (75 W) equivalent compact fluorescent	4 hours/day	9	.63 .29
100-Watt Bulb (100 W) equivalent compact fluorescent	4 hours/day	12	.84 .35
Farm
Electric Fence Charger	daily	2	.14
Heater (tractor engine block) (600W)	10 hrs/day	180	12.60
Heater (livestock tank)	8 hrs/daily	360	25.90
Auto Battery Charger (600W)	2 hours	1.2	.08
Well Pump (750-1000W)	avg./10% usage	40	2.80

For other tips on saving energy visit the Department of Energy Web site,
Energy Savers - Tips on Saving Energy and Money at Home