What I learned about dual zone mini split AC/ductless heat pumps.

I have been shopping for a dual zone mini split that will cool TWO 4k rooms, 4 on 4 off. 16000-18000 BTUs are required to cool each room (depending on your unique situation). However, when you go shopping for a 36,000 BTU dual zone split 18k + 18k, things get sketchy. Some manufacturers will tell you it's a 36,000 btu even though it's not capable of outputting 18k + 18k at the same time. Instead, it's actually rated at 24-26k, only the hotter room would be supplied with 18k BTUs of cooling. In my case, the 4k room that was on would get all it's needed cooling. Inside the units spec sheet is MOST of the information you need, so read it thoroughly. Some units are built to only cool, some units do both. Some units won't cool if it gets below 10 F outside. Some units will auto restart after a power outage!

I'm not going to dig up the formula on what's needed to cool YOUR room.

In the end, I spent the extra 1k and got the best unit I could find.

True. When I grabbed a four zone x four ton unit I had to be sure it had a real 4 ton condenser.

Also all zones on multizone units must be in same mode (heat or cool) or you get error codes.

SEE, hours of reading and talking to people and that never came up! I guess the dual fan models might be able to cool one and heat the other, or it's just not possible?

Sketchy is seriously fucked bullshit ...you mean, some will sell their wives for a sale,,, highly competitive business ...for this reason I always suggest the advice from a trusty specialist, no not one from the marine corp either ....lol

Sencha said:

SEE, hours of reading and talking to people and that never came up! I guess the dual fan models might be able to cool one and heat the other, or it's just not possible?

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There may be models that do but I don't know of any.

Also many units advertise a dehumidification mode, but that isn't what it sounds like, its just letting fan run longer after a cooling cycle to dry the evaporator coil to prevent slime growth.

A space heater with a thermostat will handle your heating needs without need for user to switch mode on heat pump every 12 hours (if not dealing with multiple zone mode conflicts)

Yeah, I wouldn't ever depend on one to dehumidify. Which is my next big purchase. Recommend a dehuy?

Phoenix 200 max is what I use. Drizair makes a good one. Fantech also. But Phoenix rules imho.

Craigslist sometimes has these for half price used. Just check function and hours.

HA!! I though I was blowing my wad on the Mitsu. I'll take "best dehuy for $400 alex" lol

Here's the deal. I've killed many cheap dehumidifiers. Haven't killed a Phoenix or Drizair. Had two 70 pint kenmores in an 8kw sealed room and they couldn't keep up. One drizair more than did it.

Watch out for home units with digital controls, many don't restart after outage.

Go on craigslist and see if you can find a used drizair for about $700.