roof top air conditioner KWH?

Hi,

My 13500 Dometic draws between 1200 and 1900 watts. Duty cycle is dependent on ambient temperature.

Invest in a kill-a-watt meter.

Going with worst case, 1900 x hours of run time would be the safe way to calculate.

At 0.25 cents I'd run the fridge and water heater on propane.

Mandalay Parr wrote:
Mine draws about 13 amps. Multiply that by the number of hours it runs. Then divide by 1000 times your .25.
The other option is to remain hot. I don't like hot. My Comfort Is worth it.

You left out a step.

13 amps times 110 volts = 1,430 watts to run AC
1,430 watts divided by 1,000 = 1.43 kilowatts to run AC
1.43 kilowatts times 1 hour = 1.43 kilowatt hours
1.43 kilowatt hours times $0.25 = 36 cents cost to run AC for 1 hour continuously

You will have to estimate how long that bad boy stays on. Sweating isn't my thing either.

Thank you both for explaining it that way, makes sense.

Mine draws about 13 amps. Multiply that by the number of hours it runs. Then divide by 1000 times your .25.
The other option is to remain hot. I don't like hot. My Comfort Is worth it.

This is very rough, but here goes:

I'm not sure how many watts 13,500btu is so I'll just say it's 1200w (10a) running a 50% duty cycle

1200w x 12 hr/day = 14,400 w-h/day = 14.4 kwh/day

14.4 x $0.25 = $3.60 day

As I said, very rough, but you can substitute your own numbers.