Roof top 12 or 24 volt a/c

[3408cat]

I would like to know if there are any roof top a/c units that 12 or 24 volt ? If so, what price range would they be in ? I'm thinking one 12 volt and two 120 volt  units ? Thanks, Bill.

[luvrbus]

They are made but you will not like the price  www.alt-air.net

[gumpy]

I'm not aware of any air conditioners in 12v or 24v. The current requirements would be prohibitive. Consider that a 120v will draw 13 amps, not counting startup requirements, and that comes out to 130 amps at 12v.  

Of course I've been known to be wrong.

craig

[luvrbus]

They are about 1/2 of the 130 amp draw Craig    good luck

[TomC]

I have looked into similar units for quiet night time use, and you're looking in the low to mid $3k for one 12v unit.  Much cheaper just to buy a 7,000btu 120vac roof unit and run it off the inverter.  Good Luck, TomC

[3408cat]

I'm trying to get away from having the generator running hour after hour of travel time. The inverter idea sounds good. Thanks to all of you for your input, Bill.

[gumpy]

Umm, even if the 12v unit draws half what I calculated, that's still 65 amps, and unless you have a humongo battery, you can't expect to run the A/C off battery for very long when boondocking, but it appears you're interested in running it while traveling. I suggest you set up your coach so your alternator is charging your house batteries while traveling. With proper crossover connections, you can run your 120v A/C off the inverter while the alternator is supplying adequate current.

craig