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Old 05-26-2012, 10:39 AM   #1
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Who's the best at Multi-Split ACs?


I love this forum and have received many helpful tips to assist with my DIY projects. Here's my latest...

I am looking to purchase a Multi-Split AC+Heat Pump systen: 5 zones. Looking at 2 wall units and 3 ceiling cassettes.

What's the best out there as far as

1) Manufacturer: LG? Klimaire? Haier? Sanyo? Mitsubishi?
2) Ease of Install/Maintenance: Either DIY or HVAC serviceman (without needing to be a specilaist)
3) Efficiency: Best Heating/Cooling for East USA (New York) weather

Our biggest room is 30' x 15' with cathedral ceilings.

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Old 05-26-2012, 03:01 PM   #2
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Who's the best at Multi-Split ACs?


Probably Mitsubishi

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Old 05-26-2012, 09:45 PM   #3
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Who's the best at Multi-Split ACs?


We have had a Mitsu City-Multi installed for 8 years with no problems.
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Old 05-26-2012, 10:53 PM   #4
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Who's the best at Multi-Split ACs?


I take it you can't use central air? No ductwork available?
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Old 05-27-2012, 03:30 AM   #5
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Who's the best at Multi-Split ACs?


Stick with Japanese units and you should be alright.Stay far far away from any made in China .Those are junk and parts and more importantly support is all but nonexhistant.
Sanyo and Mitsubishi are very good units with good back up.
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Old 05-27-2012, 07:06 AM   #6
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Who's the best at Multi-Split ACs?


Great leads everyone!

Yes, I have no attic space so... can't do traditional cent air.

Your input is why I keep coming back to this forum. Thank you!
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Old 05-27-2012, 08:46 AM   #7
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Who's the best at Multi-Split ACs?


I have a 12,000 btu Fujitsu split ductless air conditioner. It worked flawlessly for over 4 years but lost refrigerant recently. The heating and cooling contractor said that the refrigerant compression fittings otside typically vibrate loose resulting in loss of refrigerant. This same contractor damaged the connector cover and when I called Fujitsu to see what a new cover would cost, I was advised that the company will not deal with consumers. I can understand this policy as it applies to mechanical parts but a piece of plastic held on with one screw is another story. So, I give the product good reviews for quietness and cooling ability but downrate it for the use of fittings that loosen (maybe they all do) and refusal to deal with consumers, The contractor balked at replacing the cover but has changed his tune after being contacted by the Better Business Bureau.
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Old 05-27-2012, 09:17 AM   #8
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thanks for offering your first hand experience Retired Guy.
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Old 05-27-2012, 05:11 PM   #9
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Who's the best at Multi-Split ACs?


You're welcome. keep in mind that the installation of a ductless split system is not a do it yourself project. I hired an HVAC guy as well as an electrician. It was very costly. I think the Mitsubishi model is rated better than Fujitsu but costs more too. We tried a window unit in the bedroom ($200) at Lowes but my wife could not sleep with the noise. If I have to have the refrigerant replaced every four years at a cost of $160, my Fujitsu AC may end up a costly proposition. The HVAC guy who refilled the Fujitsu said the refrigerant fittings should have been designed to be brazed and then it truly would be a sealed system with no need for refigerant replacement with normal useage.
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Old 05-27-2012, 06:41 PM   #10
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Who's the best at Multi-Split ACs?


Flare fittings are common on many small refrigeration systems(coolers and freezers), and all mini splits. Leaks at those joints are seldom. The guy that said its common for them to leak is incorrect. Bad flaring will cause problems. But that is an installation problem, not a manufacturer problem.
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Old 05-27-2012, 11:42 PM   #11
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Who's the best at Multi-Split ACs?


Quote:
Originally Posted by beenthere View Post
Flare fittings are common on many small refrigeration systems(coolers and freezers), and all mini splits. Leaks at those joints are seldom. The guy that said its common for them to leak is incorrect. Bad flaring will cause problems. But that is an installation problem, not a manufacturer problem.
I agree............. a little oil on the flare before its tightened and it will most likely never leak..........

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