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Old 05-27-2012, 05:56 PM   #1
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Question ISO feedback re: ductless air-conditioning

I have a three bedroom, 2 story townhouse (and a 2/3 finished basement) with electric baseboard heating. I am tired of window air conditioners. With three upstairs, we can usually get the whole house cool. But, they block the windows. One of them needs repair and one started making a chugga chugga type noise. It isn't making that noise right now.

I'm thinking of getting ductless air conditioning. Does anyone have experience with ductless air conditioning? What should I be looking for? What are the gotchas?

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Old 05-27-2012, 06:27 PM   #2
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I never even heard of this before. And I was in the HVAC business ten years ago.
It looks like a pretty nice system. Sort of like what we used to call "incremental units", like what you would have in a hotel room, but not requiring the same size hole in your wall as the unit. Looks to be just as pricey, too.
During my quick Google search I also came across a term, "high velocity mini ducting". That is also a way to air-condition when your home doesn't have a furnace and ducting system already in place. Just the sound of it all has me leaning towards the mini ducting if you want a more even, whole house system. The ductless system is pretty much room by room like window units.
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Old 05-27-2012, 06:42 PM   #3
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No, but I want one...
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Old 05-27-2012, 06:58 PM   #4
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They had Fujitsu units in my mothers nursing home ( 1 per 20 x 20 room). I cannot take heat and they seemed adequate to me.
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Old 05-27-2012, 06:59 PM   #5
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Is that what they also call a "mini-split system"? One where the compressor sits outside and there is a small unit that mounts on your wall with the fan and controls? They only have to make a couple holes in the wall for the pipes and electrical.

These are really common pretty much everywhere except North America. My neighbors had one installed recently. Their townhouse has a very warm upstairs, and this supplements their central air. They installed a Mitsubishi, knowing them, they did their research.

Luckily this new system that I had installed cools the entire house better than the old one, we up sized slightly to compensate for the finished basement (it wasn't part of the original floor plan).
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Old 05-27-2012, 07:04 PM   #6
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Quote:
Originally Posted by bakechef View Post
Is that what they also call a "mini-split system"? One where the compressor sits outside and there is a small unit that mounts on your wall with the fan and controls? They only have to make a couple holes in the wall for the pipes and electrical.

These are really common pretty much everywhere except North America. My neighbors had one installed recently. Their townhouse has a very warm upstairs, and this supplements their central air. They installed a Mitsubishi, knowing them, they did their research.

Luckily this new system that I had installed cools the entire house better than the old one, we up sized slightly to compensate for the finished basement (it wasn't part of the original floor plan).
That sounds like what I'm talking about. I think the split is when there are several units inside.
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Old 05-27-2012, 07:05 PM   #7
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Quote:
Originally Posted by pacanis View Post
I never even heard of this before. And I was in the HVAC business ten years ago.
It looks like a pretty nice system. Sort of like what we used to call "incremental units", like what you would have in a hotel room, but not requiring the same size hole in your wall as the unit. Looks to be just as pricey, too.
During my quick Google search I also came across a term, "high velocity mini ducting". That is also a way to air-condition when your home doesn't have a furnace and ducting system already in place. Just the sound of it all has me leaning towards the mini ducting if you want a more even, whole house system. The ductless system is pretty much room by room like window units.
"high velocity mini ducting" Never heard of that. I'll have to Google.
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Old 05-27-2012, 07:13 PM   #8
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Pac, would one unit take care of a two bedroom apartment? Or would I need a multi?
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Old 05-27-2012, 08:10 PM   #9
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Pac, would one unit take care of a two bedroom apartment? Or would I need a multi?
Where would you put the compressor? One compressor can run multiple inside units. I have a friend who got an early version and he had one unit at the top of his stairs. It cooled an entire four bedroom house.
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Old 05-27-2012, 08:13 PM   #10
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Where would you put the compressor? One compressor can run multiple inside units. I have a friend who got an early version and he had one unit at the top of his stairs. It cooled an entire four bedroom house.
Outside the bedroom under the stairs for the top apartment. The unit could go in the living room (preferred) or the bedroom. Or just get two units...but if one would do...
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