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RedHelix 07-19-2011 01:49 PM

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

gregzoll 07-19-2011 02:00 PM

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

RedHelix 07-19-2011 02:04 PM

Baseboard + forced hot water

Doc Holliday 07-19-2011 02:34 PM

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.

http://www.purennatural.com/aircondi.../splitdiag.jpg

With remotes!
http://www.aconsale.com/slim123/imag...zonemrslim.jpg

What it looks like inside. Top right corner.
http://www.aafeders.com/products/ac/...dmanDen_lg.jpg

GottaFixIt 07-19-2011 02:45 PM

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...

RedHelix 07-19-2011 04:27 PM

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.)

yuri 07-19-2011 04:30 PM

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.

vsheetz 07-19-2011 05:44 PM

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.

gregzoll 07-19-2011 06:49 PM

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.

puddlejumper58 07-19-2011 09:53 PM

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.

hardwareman 07-19-2011 10:00 PM

Quote:

Originally Posted by puddlejumper58 (Post 689752)
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

puddlejumper58 07-19-2011 10:11 PM

Our's has a bucket that had to be dumped several times a day unless you chose to pipe it out side.

hardwareman 07-19-2011 10:17 PM

Quote:

Originally Posted by puddlejumper58 (Post 689766)
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.

puddlejumper58 07-19-2011 10:24 PM

Quote:

Originally Posted by hardwareman (Post 689774)
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

gregzoll 07-19-2011 10:26 PM

Quote:

Originally Posted by puddlejumper58 (Post 689781)
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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