I'm finishing a basement, pulled permits, and apparently either need to zone my current system (not easy given space restrictions) OR, the HVAC guy said I could put a "splitter unit" on the wall with a unit outside. I assume similar to a heat pump.
I've never (before today) heard of them? Are they any good? Reliable? Noisy?
He said LG & Kawasaki and several others make them?
I really wasn't prepared for an extra 2-3K for the HVAC. I was hoping he could run a couple of drops and be done with it - but I guess not.