Roof Air Conditioners

I am building an off grid all electric motorhome. I am making provision for a future A/C. It will be a small domestic split.
The modern small splits are a world away from traditional rooftop RV units....
Cheaper, MUCH MUCH more efficient and more versatile in their installation options.
If you can, I suggest you seriously consider going that way.
Cheers,
Peter
OKA196 motorhome

The Dometic Harrier Lite atop my Karavan lost its gas twice. On the second occasion my fridgie couldn't find the leak. It was out of manufacturer's warranty, but only four years old. I bit the bullet and replaced it with a Freshjet 7 Lite, since it was going to be a simple, quick swap. An expensive excercise, but so far I'm happy with it. It's much quieter and more efficient than the Harrier, being an inverter model. Several other owners who have trodden the same path seem to agree.

My fridgie cautions that none of these units are really designed for rough roads, and that's my main concern. He showed me inside my old unit as to why. Too much rigid piping instead of flexible, pressure-rated hose. Once out of warranty there are mods possible to improve the resiliance of such rooftop a/c units, so I'm told.

I can't comment on the MyCoolMan unit, other than to note that Kimberley have swapped to it. I was told by the head tech that the change was made because of supply issues. I see that it's $600 cheaper at Caravans Plus.

Thanks for the reply, I'm leaning towards the Mycoolman as it is $1400 cheaper [installed] by I think the local agent here,
[ Jayco dealer] thought I was going to sign up on the spot for a new Dometic, isn't the internet wonderful to be able to compare prices.

Out of interest anyone had a 12v roof top I found them a while ago thought it would be good when off grid camping in a van. There are some videos on youtube of Americans using and installing them.
https://outequippro.com/products/top-mounted-rv-air-conditioner-with-1-indoor-unit-and-1-outdoor-unit-12v

COP and EER
When comparing air conditioners, the energy efficiencies are described as COP (Coefficient Of Performance ) for heating and EER (Energy Efficiency Ratio) for cooling.
They describe energy IN compared with energy OUT. In modern inverter units, ratios like 4 and 5 are now common. 2 was typical not long ago meaning that they can now use HALF the power that they used to for the same effect.
If they don't quote them, walk away.
Cheers,
Peter
OKA196 motorhome