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  Reply # 1200018 18-Dec-2014 15:41
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why can't engineers create heat transfer devices with one cable?

put it in your son's room, give me the heat here in Dunedin, i'll pay for it

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  Reply # 1200024 18-Dec-2014 15:44
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Yeah what type of windows do you have in the room?

If they are the full height, hinged at the top type, then you'll be directing heat/air rising into the room.  Deflecting this is definitely worth a look.

What is the house constructed of, and what colour is it?  It wouldn't take much to get a current of warm air heading up the outside surface on a warm day.



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  Reply # 1200030 18-Dec-2014 15:50
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yeah you are all right; we have the perfect storm.

The windows are hinged at the top, half height windows. 
Exterior is cedar, stained, dark grey/charcoal.
We have found that if the sun is coming in hard and there is no wind around; then leaving the window closed with the blind up is better than opening the window. 

We have roller blinds on the inside already, but they don't do much, as the black out blinds already have soaked up the heat. I think until the black out blinds can be removed (they are a necessity currently, and just normal blinds are not enough - his room is a sun trap!), we are going to be chasing our tail with the only real option being to get something to force cool air in (or suck it out as mentioned in an earlier post) to try and counter the heat soaked blinds. 

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  Reply # 1200232 18-Dec-2014 22:24
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Louvres on the outside, set to the correct angle works well.  Lets light in, but not direct sunlight and also prevents the glasshouse effect you have at the moment.

Else use shade cloth (much cheaper), but it also blocks light.




You can never have enough Volvos!


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  Reply # 1200236 18-Dec-2014 22:28
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Cover the windows in tinfoil?




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  Reply # 1200247 18-Dec-2014 22:34
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like a hangi?

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  Reply # 1200344 19-Dec-2014 09:13
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Portable aircon units are a PITA because they still need to be vented outside and they are noisier.

But if you really want one, I wouldn't buy one brand new as they are way overpriced.

I have a portable unit and am thinking of selling it.




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  Reply # 1200393 19-Dec-2014 09:59
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See if my ex mother in law in sit in there for a few minutes, that should see it go to about -20

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  Reply # 1200497 19-Dec-2014 11:49
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MichaelNZ: Portable aircon units are a PITA because they still need to be vented outside and they are noisier.

But if you really want one, I wouldn't buy one brand new as they are way overpriced.

I have a portable unit and am thinking of selling it.


Yeah that is a downside, they do require you to cut a hole in glass for the exhaust. There is also the drip tray when they are in Heat Pump Mode.

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  Reply # 1201308 21-Dec-2014 01:32
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What type of tints have you got on the windows? As you need a type that reflects infra-red light.





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  Reply # 1201323 21-Dec-2014 03:03
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I think the simple and cheap answer is to swap rooms.




Location: Dunedin

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