Good info! Thanks
Its probably all due to poor sizing honestly, if I were to buy everything again, I could do better
I have a Dual head system with 2 x 9K BTU indoor units, one in my office and one in my bedroom. The outdoor unit is 18K BTU. I got this installed by a company, and what I didn't know at the time is that while a double head unit does save exterior space, and save a circuit run, it means the compressor can't ramp down nearly as much as the lower units. My 9K BTU units can only ramp down to say 5K BTU (Made up number) before turning the compressor off, but a standalone 9K BTU unit can ramp down much further, which helps with humidity
In my living room which is attached to the kitchen, I have a single standalone 9K BTU unit, which is quite undersized for the area, and it does fantastic with no high humidity. I got this one for free, and installed myself (Which is why the sizing is off, it was free)
If I were to do it again, I would get a 7K BTU standalone if I could find it, for the office, and a 9K for the bedroom. Or even just 2 x 9K BTU standalones
But, its not a huge problem now as I use some Mysa thermostats with them, and have automations setup to control humidity. If it gets high enough, I actually have them turn their fans way down and then just blast the main AC for a little to get the level down.
The mini splits probably halved my power usage, all while keeping the house significantly cooler