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Old 04-08-2009, 07:31 AM
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Default Air Conditioner

Just finished out a room over the garage. I have the main HVAC ducted into it, but it doesn't provide quite enough cooling.

Looking at either a small window unit or one of the stand alone evaporative cooling units.

Anyone used one of these stand alone deals? Looks more like a dehumidifier. Curious as to how they work.

Thanks.
Old 04-08-2009, 07:57 AM
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Is the size of the existing AC unit inadequate, or does it just need more volume? We had to add a second supply register to our upstairs addition over the garage. One supply just didn't do the job. It's much better now.
Old 04-08-2009, 09:58 AM
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I would look at one of the new single room ducted in system. Most newer homes in the Cola. area have central units installed that only provide for the original living sq. footage. I know of several people who did what you did and had to up the tonage or go to an alternative a/c.
Old 04-08-2009, 02:26 PM
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I think tonnage is about correct...maybe a little shy. The biggest problem I know already is one thermostat on the first floor. This room is second floor, and out of the normal air flow.

This is a vacation/weekend home...and the extra room is really for overflow when we have guests up for a weekend. So I don't want to spend a ton.
Old 04-08-2009, 02:30 PM
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Originally Posted by FishOn162 View Post

This is a vacation/weekend home...and the extra room is really for overflow when we have guests up for a weekend. So I don't want to spend a ton.

Nor do you want them to be TOO comfortable either or else they may never leave.

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Old 04-08-2009, 06:09 PM
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This may cost too much, and make guests too comfortable. Ductless mini split a/c's and heat pumps are designed to take care of your problem. Somewhere in the neighborhood of $3000 installed. It consists of an indoor unit mounted high on the wall, a small outdoor unit, and copper lines joining the two. They have a remote controller much like your TV. Mitsubishi, Fujitsu, and Sanyo make nice ones. Google "mini split" for more info.
Old 04-08-2009, 06:12 PM
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A lower cost alternative would be to add powered duct fans to force more air up there. Need a return in there too or keep the door open, there needs to be an open path for airflow between the supplies and return.
Old 04-08-2009, 06:59 PM
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The ductless units work really well. I framed in and finished a "man cave" for a friend in the upstairs of his detached garage and this is what he used. It has a thermostat, remote and heats and cools. Works great for this area (about 700 sq ft). The unit even has moveable vanes that occilate to move the air.
Old 04-10-2009, 09:52 AM
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I wouldn't recommend the evaprative units.
They work ok for low humidity areas but if you are in a high humidity area it ends up condensing more water than it can evaporate.

The ductless mini split systems are pretty cool but are around $1,500/ ton.
Window Unit is about $200/ ton. Frame a hole for the size of the window unit and put it on a side of the house that is out of view. can get them with a remote control also.
Old 04-10-2009, 05:01 PM
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You could also go with a zoned system for that area. Make sure you have enough return for the space.

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