Fitting Aircon

Kelvin, while I'm not familiar with the Aircommand unit it is well known that a normal domestic split system is much cheaper, more efficient and quieter than any caravan unit. Ask your local airconditioner supplier as they will have fitted them to caravans.
Lot's of motorhomes have also installed them in lieu of the caravan type units.

Kelvin,

Slip down to Hervey Bay, and see Bob Mitchell from Slide-on Campers, think they're in Islander Drive???

Bob fits little split systems to the aluminium campers he makes, and they might be just what you want. He makes a pretty good camper too. We hope to get one made next year.

Bob.

Firstly I wouldn't even consider a caravan type A/C no matter who manufactures it !
They use antiquated technology, cost a fortune, noisy and are basically crap at what they are supposed to do.

A modern Inverter split system will cost a 3rd as much, be far more efficient, quieter and just simply so much better.

There is no problems with copper pipes if they are installed correctly with good engineering principles, ie. "vibration absorbing loops" left ajacent to connections, and good fixing of pipework runs so movement is minimised.

I used to install large 3 phase electric motors fed with large pyrotenax cabling (a solid copper clad mineral insulated fireproof cable) which had the same appearance and qualities as copper tubing and we never had one single failure due to vibration or placement, because we installed the cabling to allow for a slight movement as the motors stopped and started.

The same principles apply to the pipework associated with split a/c's in mobile situations.

Most a/c installers seem to want to use minimal pipe and keep runs bowstring tight which can eventually lead to stress fractures as the copper is "work hardened" and failure occurs.