Devils advocate here, it cost me ~$1500 in equipment to buy the vacuum pump, vacuum gauge, nitrogen air tank to flush the lines and pressure test, pressure manifold set and gauge, air lines, good flaring tool, copper bending tool, schrader valve pulling tools, various air tools, and a book on mini split installations.
Then it took me 2 days between pouring concrete pad for the heat pump, installing the heat pump and bolting it in, running the copper lines, drilling the exit hole, running the drain piping, learning how to use all the tools, running the electric and control cables and installing a new breaker and 220 subpanel, pressure testing, vacuum testing, flaring, releasing vacuum and all the stuff you have to do. I also had to spend several nights watching youtube and get a EPA 608 certification for handling refrigant which took another day.
Wouldn't have been worth it for a single unit, but was worth it for installing 3, and now I can do additional units for basically $0 overhead and of course no one would even have to know if I installed it and now I can order unlimited amount of refrigerants to my doorstep.
Having plumbed my entire house, and done my entire house electrical system, I would say the level of expertise to install a mini split is higher than either alone. You have to do electrical, plumbing, refrigerant handling, pressurized equipment handling, be liable for massive federal/EPA fines if you do something wrong, and on top of that I had to do masonry work.
There is a 0.00000% chance of getting into EPA trouble installing one minisplit. You got crews dumping 5 a day into a bucket of water all over and no one will answer a report
Then it took me 2 days between pouring concrete pad for the heat pump, installing the heat pump and bolting it in, running the copper lines, drilling the exit hole, running the drain piping, learning how to use all the tools, running the electric and control cables and installing a new breaker and 220 subpanel, pressure testing, vacuum testing, flaring, releasing vacuum and all the stuff you have to do. I also had to spend several nights watching youtube and get a EPA 608 certification for handling refrigant which took another day.
Wouldn't have been worth it for a single unit, but was worth it for installing 3, and now I can do additional units for basically $0 overhead and of course no one would even have to know if I installed it and now I can order unlimited amount of refrigerants to my doorstep.
Having plumbed my entire house, and done my entire house electrical system, I would say the level of expertise to install a mini split is higher than either alone. You have to do electrical, plumbing, refrigerant handling, pressurized equipment handling, be liable for massive federal/EPA fines if you do something wrong, and on top of that I had to do masonry work.