Opinions about ductless mini split heat pump systems

[Paul Choate]

I am tired of buying window air units. I generally buy and hold SFRs built from the 1920s-1960s. Most do not have central heat and air systems. I have put in a couple full central systems and it has been too expensive for the return. I like the idea behind the ductless systems but am worried about the quality, ease of installation and maintenance. I have zero experience with them so all opinions are welcome!

I will have my licensed hvac guy install the first one but I am hoping to be able to do them myself at some point.

Thanks in advance.