Originally Posted by Robin97396
I've seen people mount them as you described. Apparently that configuration works quite well and obviously would be relatively easy to hook up because of the proximity of the two units.
This is a rookie question about these mini split systems. They are actually heat pumps, and heat pumps not only make AC but also make heat in the winter?
they will until it gets really cold.. a heat pump is an air-conditioner "backwards".. just like in summer your A/C blows cold inside and hot outside.. turn it to heat and it reverses the process...
the caveat is the colder it gets outside the less efficient a heat pump is.. most people that live north of orlando or so (or anywhere not on the west coast) will have a secondary source of heat.. ie electric coils or gas furnace.. if you are running your bus engine obviously you have great source of heat.. if you are on shore power you could get some heat from the mini split without using your propane.. (ie if the campground has electricity included.. you run your heatpump as long as you possibly can so you dont waste your propane.. but you will still want a furnace of some sort for those really cold nights..)...
I have run my ducted inverter splits (my home system is based on them) down to 0f outside but they struggle.. get noisy and use lots of power to push out minimal hot air... since I have natural gas main heat and gas is CHeaper than electricity I dont use the heat pumps much here at home..
P.S. if you install a mini split with less than 15 feet of refrigerant lines you must adjust the amount of refrigerant down to match the line lengths...