Running a small 5,000 BTU 115V Window Air Conditioning Unit

[SunEagle]

It is a very small unit, I guess it may be about 800watts max, but I'll check when I get home. If it is 1,500 watts max then I'll have to get a bigger inverter, perhaps a 1,500 watts inverter to match it.

Again. If that AC unit is rated more than 200Watts you do not have enough battery to run it 6 hours.

[SunEagle]

Sorry, forgot to say, no grid there. It's a cabin in the middle of nowhere.

Ok. You have no grid available. I agree with littleharbor that the inverter may be not big enough to start the AC unit.

The next issue may be exactly how many Watt Hours will that AC unit use in 6 hours?

Based on that battery bank it will safely provide about 1350watt hours which is about 25% discharge of that 24v 225Ah system. That means the AC unit can only use about 200watts each of those 6 hours. If it needs more then your battery system is not big enough.

Otherwise 640watts of panel, an MPPT 40A CC and a 225Ah battery is a nice balanced system. Just be aware that some inverters have high losses and will consume Ah out of the battery even if the AC unit is not running.

[john95]

And that size inverter might have difficulty starting the compressor for that AC unit.

It is a very small unit, I guess it may be about 800watts max, but I'll check when I get home. If it is 1,500 watts max then I'll have to get a bigger inverter, perhaps a 1,500 watts inverter to match it.

[john95]

Sorry, forgot to say, no grid there. It's a cabin in the middle of nowhere.

[littleharbor]

And that size inverter might have difficulty starting the compressor for that AC unit.

[SunEagle]

It might be doable but why would you want to spend $1.50/kWh to run that AC unit instead of just plugging it into the grid?

[john95]

Since summer is around the corner I thought I'd work on a solar project to cool me down with sun power just for fun.
I was planing on these components:

4x Trojan T105 6V batteries as a 24V array
2x Mission 320 Watt 24 Volt Monocrystalline
HQST 40A MPPT Solar Charge Controller
Go Power 600 Watts 24V Pure shine inverter
Usage will be only 6 hrs daily.

Do you think that this is doable? Thanks.