AC units?

[luvrbus]

Any copper tubing will anneal (harden) over time on it's own,you can take a brass wire brush and harden copper nature of the beast any place it rubs against another materiel it will anneal

[Van]

Copper is not good for any installation subject to  vibration because it work hardens.

It is forbidden in aircraft for that reason. You don't see any copper lines in autos either.

Good to know!   You are correct though, I have never personally seen a minisplit mounted in a plane or auto. Right on!

[Uglydog56]

I agree with bob on the mini-splits and the use of copper.  I will be using a 2 zone mini split on my conversion as my budget allows.

If anyone has any leads as to where i could get a dual zone, inverter type mini split as a complete kit, let me know.

thx!

The dual zone mini splits are all 240 volt.

[gus]

Well, actually annealing is softening. This can be done with copper by heating and plunging into cold water or oil, either works well.

Yep, there is lots of copper in GM buses too but they all have numerous flex couplings to allow for it.

Not saying it shouldn't be done, just saying it needs to be done with hardening in mind.

[RnMAdventures]

Where are you buying mini-splits for half the cost of a roof top?  Are the prices in Mexico that lop sided because mini-splits here in the USA seem to cost around the same as a roof top.

Here in Mexico we paid 6,300 pesos for each mini-split. These also have the heating elements installed. Each rooftop unit would cost us 14,000 pesos down here. Exchange rate is about 13.5 pesos per dollar.

That sounds like a really good deal. Do you like the quality of the units? Thier web site is in spanish. I wonder if they ship internationally?