12v Roof mounted air-conditioner

[SimonM]

With the unusually hot weather at the moment I was pondering the benefits of proper air-conditioning, not the standalone devices that push air around, or need to be plumbed out of a window or door. I am not interested in one of those at all.

Obviously all I’ve previously been aware of are usual ‘Dometic’ type of units frequently seen on continental MHs, that are mains powered, therefore requiring to be hooked up.

I’ve seen a few adverts for a 12v version and wondered if anyone has one yet, or any knowledge of how worthy they are. I will bear in mind a need for a high quality solar bank and Lithium battery setup, I’ve 520w solar and will likely be expanding my Lithium as well. I already have a suitable hole in the roof for it to mount.

 

[Morphology]

I've no experience of a 12v one, but our roof-mounted Dometic runs fine off the Inverter - pulls around 1200W when on max cooling. It'll sometimes trip our 1600 Multiplus II inverter-charger due to the in-rush current when it starts up, so I generally start the blowers first, then turn it onto cooling.

 

[SimonM]

That’s interesting to know, I just assumed a 240v one was a non-starter and didn’t consider one. My inbuilt inverter is 1800w so that’s a possible. Although 1200w = 100 amps and I assume you’ve a large Lithium bank?

 

[andyjanet]

Our concorde had the soft start version in the bedroom , a dometic i believe! This was easier on the inverter/ battery bank we found setting it to a couple of degrees below outside temp kept the bedroom sleepable and as the outside cooled down at night the air con didnt kick in too much

 

[andyjanet]