the ones in my house are from 2008.. inverter heat-pumps.. theres no strip heat.. i took my mini splits and tore them into pieces and built them completely custom into my zoned / modulated HVAC system and retained the ability to use my 95% effcient gas heat for backup and full-on winter heat.. (no this isnt in a bus.. this is my regular house)
Ive seen very few mini's with strip heat and none that run on 120 volts with strip..
www.acwholesalers.com
sells a bunch of different brands of minisplits... i got mine from there originally years ago... i had issues with them so they sent me a whole new set of 3, then ai figured out how to fix the originals so 2 of my replacements have been sitting in their cartons for 7 years...
mine were Grunaire units... chinese made like most of them are.. theres only a cpouple different chnese companies making them but they are sold under a ton of different names online...
-Christopher