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WU GUO,
sorry I can only type in English at work.
first you need to calculate what capacity you need as heat pump.
http://www.aircondition.co.nz/pump_calculator.htm
this is just the site I googleed it for you. you can google around for different one as well.
for example, for a living room like
10m (L)* 5m (W)* 2.4m (H) = 120 M3
normally, it cost 55w per M3 to heat/cool the room
so 55 * 120 = 6600W = 6.6K
that means you need 6.6K power for the room.
you can try this link too.
http://www.panasonic.co.nz/heatpumps/heatpumps-products.html
Then, if you found out you need 6.6K, you have to ask yourself a question, do I use the heat pump for cooling or heating?
usually a heat pump with 3.5K cooling capacity can handle about 7K heating capacity.
For example, when I bought my heat pump, I thought I would only use it for heating. so I just bought this one for heating only.
but last night was so hot, so if I was gonna use the heat pump for cooling, I need the 7K cooling one and it usually 10K for heating.
and I DONT reckon brand is important as long as you are buying the well known brand.
panasonic, mitsubishi hearvy industry or electric, dakin, etc.
I would just buy the cheapest deal among them. |
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