Mini Split AC Units

The problem with the klimaires is they only work down to about 60 degrees outside ambient temp (Last time I checked).
There is a low tech lower ambient kit for it for about 300. Many chinese brands pop up every summer or 2 and often dont stay around long. Also the fedders invertor unit
is higher tech high seere and I talked to the importer who had parts and seemed like a decent guy but it is Chinese.
I agree about the Lg being a less quality than the jap brands mentioned above but it is also much cheaper and
a huge step above the chinese ones like klimair. I would also add Fujitsu and panasonic who recently took over the sanyo line to the list
of quality units. If someone is going to pay for a jap unit a Mitsubishi is usually best...Been around the longest much more parts availability no wait to ship from japan
for parts and many many more techs familiar with it. Check with the company many will warranty it if you have a a/c guy sighn off for doing the install.
Although with a mitsubichi you probably wont need the waranty.

I took a part a soleus 14000 btu portable once and noticed the design was such that even with the dual hose
had lots and lots of the condenser air coming from inside instead of outside. I remedied it with foam weather stripping and spray foam. Not the easiest job though but a improvement.

Doobius1 said:

I want to replace my dual hose. The thing pumps smell and co2 out. I am looking at the new DIY models. Mini Split Warehouse will have them end of the month. No purging/pumping lines required. Pretty much plug and play. Take it with you if you move. Line can be run through a window. More money but not needing Hvac guy is worth it

http://www.minisplitwarehouse.com/product/do-it-yourself-24000-btu-ductless-mini-split-heat-pump-air-conditioner-br1224w3a

Click to expand...

All a/c unit lines must be evacuated. I don't care what these dubious diy model manufacturers say. If there is air in your lineset you have moisture if you have moisture in the lines this creates acid when mixed with refrigerent or can freeze up. Moisture in your lineset can and will cause catastrophic failure.

• If someone is going to pay for a jap unit a Mitsubishi is usually best​
  
  
  
  

cool man is right mitsubishi top of the line. IMO

Never owned one but Mitsubishi is always speced for commercial work requiring splits. Samsung is getting in the business though.

I've seen condensers inside before. Need a drip pan and condensate pump. Oh and plenty of ventilation.

Yes, Mitsubishi Electric rocks.. They're very common here, too and seem to last forever. Not one compressor failure yet out of 100's we've installed! Mitsubishi Heavy Industries is a different company altogether, not bad either but I'd rather go for the Electric. Panasonic has had a lot of compressor failures but it's mostly just a couple of models. We're heating down to -25C/-15F with them. Last winter we were down to -33C/-28F, no problems with Mitsubishis but of course the performance is very limited in those temps. Cooling is much easier task for these machines so these problems probably don't appear in less harsh conditions.

I've never stumbled upon a Klimaire, but most machines will run in cooling mode even if the outdoor temp is "too low", but don't perform up to spec and may drip water from the indoor unit or even freeze it. Definitely a thing to consider when buying!

The Mitzi Elecs sold here are precharged for 7,5m/24ft and the Heavy Ind. up to 15m/50ft or 20m/65ft, don't remember from the top of my head.

For some reason LGs are more expensive here than most japanese brands, what a ripoff.

We've had those DIY splits too, THEY SUCK! Low overall quality, connection leaks, bad compressors, leaky heat exchangers, poor performance, electrical failures, you name it! Also consider you'd be working with very powerful greenhouse gases, screw up, leak it and the environmental load is easily equivalent to a year's car use. If you can rent a vacuum pump, a flaring tool and gauges you'll probably have a better chance of success with a "true" mini-split. I installed a couple of them before I got into the trade and they still work.

Like others have said, whatever the brand, if its not properly evacuated it won't last long. The Electrics don't even have a drier in their circuit anymore! When installing in freezing temps we dry the lines with nitrogen.

SomeOtherDude said:

alright so there's two parts to this fucking thing (the ac unit) the condenser goes inside and cools the ladies down, and the compressor is placed outside to expel the heat. OK. here is my question: Can the compressor be placed inside?

Show some love people

Click to expand...

NO........

Make sureif you buy a new mini split that it is a inverter unit super efficient

kknaj said:

I guess nobody uses mini split ACs.

Click to expand...

Wow. One post, and you already look like a retard.


Anywho, I have heard great thing about the Mitsubishi units but Christ they are expensive! My shinco had lasted me two years running almost all the time.

I have read some people complaining about some of the DIY install models. Poor quality issues above anything else. My understanding is that the line are already vaccumed.. So they don't indeed have moisture in them when you connect them. I will say that having a quick disconnect is pretty fucking cool option. I have to move my AC to a new space..that is going to cost me about $200 in recharge.

joe macclennan said:

All a/c unit lines must be evacuated. I don't care what these dubious diy model manufacturers say. If there is air in your lineset you have moisture if you have moisture in the lines this creates acid when mixed with refrigerent or can freeze up. Moisture in your lineset can and will cause catastrophic failure.

Click to expand...

the lines are not your basic lines, they have locks on either end that keep the gases inside them and theres zero loss when reattaching them or taking them apart. the only catch is u cant cut them to fit so if your lines are too long youll have an ugly loop at one end.

^ yeah, what he said. It's actually a pretty damn slick idea. I can imagine that due to the nature of the connection, there is a miniscule amount of air that is introduced into the system when you connect the lines.. like the volume of the line set X maybe 1/16th of an inch or something. But again, having the ability to move the system is a great plus. That said, I still wouldn't buy a DIY system as some of the brands went out of business and they were simply rebranded piece of shit units. What someone needs to do is sell DIY line sets!! Now THERE is a money maker!

I would still have a HVAC guy come out to test things, there are PLENTY of HVAC guys that smoke weed and you could trust them in a non-legal state. They are HVAC guys, not surgeons. I am in a legal med state so I just asked the guy on the phone if he had a problem with a installing a system in a legal grow room. If they said, I'm not sure.. I just told them I appreciated their honesty and moved on to the next one. Just don't call the DEA and ask them if they can help... Like the guy that called 911 and asked them about what the penalty for growing weed was.