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Old 07-19-2011, 02:49 PM   #1
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Cooling a whole house on a wall AC unit


Hi everyone,
My wife and I are trying to decide on the best way to cool our bedroom, and we're facing two extremes.

(Long story short, we aren't able to put a window AC unit in the room.)

On one hand, we are looking at portable AC units. It's a surefire way to cool the room I'm sure, but I'm not happy with how much more expensive they are per BTU.

On the other hand, we have an ancient 5,000 BTU wall unit on the opposite side of the house, on a 230v outlet. For a little extra money, I could probably replace it with an 18k BTU beast.

The hang-up here is our bedroom is down a hallway, and the air throw from the wall unit doesn't go in that direction. So basically, I'm worried that I'll wind up with a cold living room and hot bedroom, and spend a bunch of money to not solve my problem. (On the flipside, if it can cool my whole house, that's pretty awesome.)

Given that my house is 980sf (all on one floor,) is this a valid concern? Is there a certain BTU rating that will just force cold air into every nook and cranny for me?

Thanks!
Jack

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Old 07-19-2011, 03:00 PM   #2
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Cooling a whole house on a wall AC unit


Mini-split would work, but forced air would be better. What kind of heating system do you have in the house at this time?

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Old 07-19-2011, 03:04 PM   #3
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Cooling a whole house on a wall AC unit


Baseboard + forced hot water
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Old 07-19-2011, 03:34 PM   #4
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Cooling a whole house on a wall AC unit


I agree, a mini split ductless system. You can have up to four inside blowers (which hang on the walls) with only one outside compressor. I've attaches a few images for you.



With remotes!


What it looks like inside. Top right corner.
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Old 07-19-2011, 03:45 PM   #5
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Cooling a whole house on a wall AC unit


I def agree with the mini split for a baseboard water heated house.

Room by room climate control is great. Even just a nice, super quite fan is nice sometimes. You can also get a lot of other features like UV filters, heat pumps...
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Old 07-19-2011, 05:27 PM   #6
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Cooling a whole house on a wall AC unit


Thank you for all the input!

Let's say my budget is closer to the $500-600 range. What would you guys recommend in my situation? Should I go with a beefy wall/window unit, portable unit, or are there other options in that price range?

(I know mini splits are extremely awesome, but they look a little too expensive for my budget. Plus, one thing I should have mentioned is that I plan to take the unit with me when I move in a few years.)
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Old 07-19-2011, 05:30 PM   #7
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Cooling a whole house on a wall AC unit


an 18,000 btu beast is going to need larger 240 volt wiring is very heavy also. going to be noisy/blow like a hurrycane and you will feel chilly in the area next to it. the portable unit is probably the best bet.
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Old 07-19-2011, 06:44 PM   #8
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For the senario and finance you have described, I would go with a portable unit. I don't think you'll find one large unit will evenly or aduaquatly cool everywhere.
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Old 07-19-2011, 07:49 PM   #9
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Cooling a whole house on a wall AC unit


We had one large 110vac unit before we got central air. It could not even keep up with keeping the Living Room, Kitchen & Dining cool. We had to go with two smaller units for the bedrooms. Having a budget of $500 to $600 can get a decent unit, but not one that will cool the whole house.
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Old 07-19-2011, 10:53 PM   #10
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Cooling a whole house on a wall AC unit


I have a portable unit in my bedroom. You still have to vent it out the window or through a wall to the outside. Plus the water build up was so much that it would over flow on to the floor over night or while we were at work so we had to pipe it out side too. I still like it over a window unit because we would have had to rearange the whole room to put one in a window.
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Old 07-19-2011, 11:00 PM   #11
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Cooling a whole house on a wall AC unit


Quote:
Originally Posted by puddlejumper58 View Post
I have a portable unit in my bedroom. You still have to vent it out the window or through a wall to the outside. Plus the water build up was so much that it would over flow on to the floor over night or while we were at work so we had to pipe it out side too. I still like it over a window unit because we would have had to rearange the whole room to put one in a window.
any portable unit I've ever seen or sold has a pump on it to get rid of the water. Tube exits the window with the exhaust hose
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Old 07-19-2011, 11:11 PM   #12
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Our's has a bucket that had to be dumped several times a day unless you chose to pipe it out side.
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Old 07-19-2011, 11:17 PM   #13
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Originally Posted by puddlejumper58 View Post
Our's has a bucket that had to be dumped several times a day unless you chose to pipe it out side.
interesting, that could be a problem for most.
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Old 07-19-2011, 11:24 PM   #14
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interesting, that could be a problem for most.
That's why I open boxes and read the owners manual in the store BEFORE I buy a lot of things now.... I don't like that kind of surprise...lol
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Old 07-19-2011, 11:26 PM   #15
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Cooling a whole house on a wall AC unit


Quote:
Originally Posted by puddlejumper58 View Post
That's why I open boxes and read the owners manual in the store BEFORE I buy a lot of things now.... I don't like that kind of surprise...lol
I usually look the info online. I have worked retail, and hated repackaging stuff, when people just open it up, instead of asking first.

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