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Backup Power Planner

Appliance wattage chart

Running watts are what an appliance draws while it runs. Starting watts are the total it draws for a second or two when a motor starts, which can be 2–3 times as much. Ranges span the Honda and Champion charts; the planner defaults to the high end.

Essentials
ApplianceRunningStartingVoltsSource
Refrigerator (full-size) 132–400 W 800–1,200 W 120 HONCHATGW
Freezer (chest or upright) 100–500 W 500–1,000 W 120 CHA
Mini fridge or cooler 50–100 W 400–600 W 120 CHA
Sump pump 1/3 HP 500–800 W 1,000–1,600 W 120 CHAHON
Sump pump 1/2 HP 800–1,050 W 1,300–2,150 W 120 CHAHON
Well pump 1/2 HP 750–1,000 W 1,500–2,000 W 120/240 CHA
Well pump 1 HP 1,000–2,000 W 2,000–4,000 W 240 CHA
Electric water heater 3,000–4,500 W 4,500 W (no motor) 240 HONCHA
Heating and cooling
ApplianceRunningStartingVoltsSource
Furnace fan 1/8 HP (gas or oil) 300 W 500 W 120 HON
Furnace fan 1/6 HP (gas or oil) 500 W 750 W 120 HON
Furnace fan 1/4 HP (gas or oil) 600 W 1,000 W 120 HON
Furnace fan 1/3 HP (gas or oil) 700 W 1,400 W 120 HON
Furnace fan 1/2 HP (gas or oil) 300–875 W 800–2,350 W 120 HONCHA
Window air conditioner 5000 BTU 450–600 W 900–1,200 W 120 CHA
Window air conditioner 10000 BTU 900–1,500 W 1,800–2,400 W 120 HONCHA
Central air conditioner 2 ton 2,000–2,500 W 3,500–4,500 W 240 CHA
Central air conditioner 3 ton 3,000–3,500 W 5,000–6,000 W 240 CHA
Central air conditioner 4 ton 4,000–5,000 W 6,500–8,000 W 240 CHA
Electric space heater 750–1,500 W 1,500 W (no motor) 120 CHA
Radiant heater 1,300 W 1,300 W (no motor) 120 HON
Ceiling fan 15–75 W 75 W (no motor) 120 CHA
Box or window fan 40–200 W 120–200 W 120 CHAHON
Kitchen
ApplianceRunningStartingVoltsSource
Microwave oven 600–1,500 W 1,500 W (no motor) 120 CHAHON
Coffee maker 600–1,200 W 1,200 W (no motor) 120 HONGEN
Toaster 1,200 W 1,200 W (no motor) 120 GEN
Electric range (one burner) 1,200–2,400 W 2,400 W (no motor) 120/240 CHAHON
Electric fry pan 1,500 W 1,500 W (no motor) 120 HON
Electric grill (tabletop) 1,650 W 1,650 W (no motor) 120 CHAHON
Slow cooker 170–270 W 270 W (no motor) 120 HONGEN
Blender 300–600 W 600–1,200 W 120 HONCHA
Air fryer · check your nameplate 1,500 W 1,500 W (no motor) 120 CHAPDF
Portable induction cooktop 1,200–1,800 W 1,800 W (no motor) 120 CHA
Electric smoker 800–1,200 W 1,200 W (no motor) 120 CHA
Dishwasher (cool dry cycle) 216 W 540 W 120 HON
Dishwasher (heated dry) 1,200–2,400 W 2,400 W (no motor) 120 CHA
Laundry
ApplianceRunningStartingVoltsSource
Washing machine 500–1,200 W 1,000–2,300 W 120 HONCHA
Electric clothes dryer 4,000–6,000 W 6,750 W 240 HONCHA
Gas clothes dryer · check your nameplate 700 W 2,200 W 120 SMH
Electronics
ApplianceRunningStartingVoltsSource
TV (flat screen 20 to 55 inch) 80–400 W 400 W (no motor) 120 CHAHON
Desktop computer 600–800 W 800 W (no motor) 120 HON
Laptop or phone charger 20–250 W 250 W (no motor) 120 CHAHON
LCD monitor 30 W 30 W (no motor) 120 HON
Printer 400–600 W 600 W (no motor) 120 HON
Wi-Fi router or modem 10–20 W 20 W (no motor) 120 CHA
Satellite receiver 250 W 250 W (no motor) 120 HON
Radio 50–200 W 200 W (no motor) 120 HON
Home security system 15–40 W 40 W (no motor) 120 CHA
Lighting
ApplianceRunningStartingVoltsSource
LED bulb (each) 8–15 W 15 W (no motor) 120 CHA
Medical
ApplianceRunningStartingVoltsSource
CPAP machine (no heated humidifier) 30–60 W 60 W (no motor) 120 CHA
CPAP machine (heated humidifier) 60–120 W 120 W (no motor) 120 CHA
RV and outdoor
ApplianceRunningStartingVoltsSource
RV air conditioner 11000 BTU 1,010 W 1,600 W 120 HON
RV air conditioner 13500 BTU 1,500–2,000 W 2,800–3,500 W 120 HONCHA
RV air conditioner 15000 BTU 2,000–2,500 W 3,300–4,500 W 120 HONCHA
RV refrigerator 150–600 W 400–1,000 W 120 HONCHA
RV microwave 600–1,200 W 1,200 W (no motor) 120 CHA
RV water heater (electric) 1,200–1,500 W 1,500 W (no motor) 120 CHA
String or LED camp lights 50–200 W 200 W (no motor) 120 CHA
Portable projector 100–300 W 300 W (no motor) 120 CHA
Garage and tools
ApplianceRunningStartingVoltsSource
Garage door opener 720 W 1,420 W 120 HON
Circular saw (7-1/4 in) 1,200–1,800 W 2,300–3,600 W 120 CHAHON
Table saw (10 in) 1,800–3,000 W 3,600–6,000 W 120 CHAHON
Miter saw (10 in) 1,200–1,800 W 2,400–3,600 W 120 CHA
Reciprocating saw 960–1,200 W 1,920–2,400 W 120 CHA
Angle grinder (4-1/2 in) 900–1,800 W 1,800–3,600 W 120 CHA
Electric drill (1/2 in) 400–600 W 800–1,200 W 120 CHAHON
Hammer drill 900–1,200 W 1,800–2,400 W 120 CHA
Belt sander 800–1,200 W 1,600–2,400 W 120 CHA
Air compressor 1/2 HP 975 W 1,600 W 120 HON
Air compressor 1 HP 1,500–1,600 W 4,500 W 120 CHAHON
Air compressor 2 HP 2,500 W 7,500 W 240 CHA
Air compressor 3 HP 3,500 W 10,500 W 240 CHA
Pressure washer 1500 PSI 1,200–1,500 W 2,400–3,000 W 120 CHA
Pressure washer 2500 PSI 2,000–2,500 W 4,000–5,000 W 120 CHA
Welder (120V) 1,800–2,500 W 3,600–5,000 W 120 CHA
Welder (240V) · check your nameplate 3,000–8,000 W 6,000–16,000 W 240 CHA
Work light (LED) 15–25 W 25 W (no motor) 120 CHA
Work light (halogen 500 W) 500 W 500 W (no motor) 120 CHA
Job-site heater 1,500–3,000 W 3,000 W (no motor) 120 CHA
Battery charger (heavy duty) 1,500–2,000 W 2,000 W (no motor) 120 CHA
Motors (by horsepower)
ApplianceRunningStartingVoltsSource
Motor 1/4 HP (capacitor-start capacitor-run) 400 W 850 W 120 HON
Motor 1/3 HP (capacitor-start capacitor-run) 450 W 975 W 120 HON
Motor 1/2 HP (capacitor-start capacitor-run) 600 W 1,300 W 120 HON
Motor 3/4 HP (capacitor-start capacitor-run) 850 W 1,900 W 120/240 HON
Motor 1 HP (capacitor-start capacitor-run) 1,000 W 2,300 W 120/240 HON
Motor 1.5 HP (capacitor-start capacitor-run) 1,600 W 3,200 W 240 HON
Motor 2 HP (capacitor-start capacitor-run) 2,000 W 3,900 W 240 HON

Data last checked 2026-09-26. Sources and confidence levels. Plan with the backup power planner.