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353 posts

Ultimate Geek


#272147 11-Jun-2020 15:44
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We're trying to choose between two Daikin heatpumps, one, a Cora which looks like you'd expect, and the other, Zena which looks quite nice. But the Zena has 1 less energy star rating on both cool and heating, so I'm pretty sure we'll go with the Cora. Apparently the cost is very similar, and the rated capacity is too.

 

Going off the specs though, I'm not sure how to understand the power consumption. But one had a power input of 1kW for cool, and the other a power input of 1.5kW for cool, just for example, would that mean the model that consumes 1.5kW will cost up to 50% more to run?

 

If that's the case, the Zena would cost about 20% more to run when cooling, and about 10% more when heating. But I thought I'd post and see if that's really how things work :) Thanks!

 

 

 

Daikin Cora FTXM60UVMZ

 

Rated capacity: 6.0 cool (kW), 7.3 heat (kW)

 

Capacity range: 1.1 - 7.5 cool (kW), 1.0 - 9.8 heat (kW)

 

Cool (l/s): 310

 

Heat (l/s): 333

 

Energy star ratings: 3 cool, 4 heat

 

Power input (rated): 1.52 cool (kW), 1.66 heat (kW)

 

E.E.R/C.O.P: 3.95 cool, 4.40 heat

 

A.E.E.R/A.C.O.P: 3.92 cool / 4.37 heat

 

 

 

Daikin Zena FTXJ60TVMAK

 

Rated capacity: 6.0 cool (kW), 7.2 heat (kW)

 

Capacity range: 1.1 - 6.5 cool (kW), 1.0 - 8.2 heat (kW)

 

Cool (l/s): 243

 

Heat (l/s): 273

 

Energy star ratings: 2 cool, 3 heat

 

Power input (rated): 1.83 cool (kW), 1.88 heat (kW)

 

E.E.R/C.O.P: 3.28 cool, 3.83 heat

 

A.E.E.R/A.C.O.P: 3.26 cool / 3.81 heat


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4652 posts

Uber Geek


  #2503032 11-Jun-2020 15:51
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Look at the COPs   which is how much output you get  for every unit of input (ie Kwhs)

 

Cooling 3.95 (~4) vs 3.3, that's ~20% better,

 

Heating is not quite as good 4.4 vs 3.8 ~15% more efficient,

 

The specs on the Cora knock the Zena out of the park...




353 posts

Ultimate Geek


  #2503039 11-Jun-2020 16:08
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Awesome, thanks for that. We'll go with the Cora :)


 
 
 
 


642 posts

Ultimate Geek


  #2503062 11-Jun-2020 17:10
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Can I ask what price you were quoted for the Cora?  Just curiosity on my part...

 

 

 

We got the next size up Alira (FTXM71UVMA) installed 4 weeks ago and it's been life changing, can't speak highly enough about it.  That was the only model the installer could get his hands on at short notice and at $3230 incl installation we thought that was more than fair. The tech specs are identical to the Cora apart from the Alira having a 0.02 increase on the heating COP.




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Ultimate Geek


  #2503140 11-Jun-2020 17:43
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That does seem like a really good price yeah. We're quoted $3,680 incl. install, or $300 extra for the next model up FTXM71UVMZ 7.1 kW cool / 8.1 kW heat. Is yours a back to back install?


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  #2503177 11-Jun-2020 18:59
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Dont want to hijack the thread, but it might be useful for others

 

We have two heatpumps, Fujitsu. One downstairs one upstairs. Large house so decent capacity

 

Is there an option to upgrade relatively cheaply by:

 

Swapout the two outdoor units and swap out the two indoor units. Already plumbed, so a quick and easy disconnect/reconnect for outdoor and indoor, and our units have a value for resale/tradein?


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Ultimate Geek


  #2503439 12-Jun-2020 10:14
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LostBoyNZ:

 

That does seem like a really good price yeah. We're quoted $3,680 incl. install, or $300 extra for the next model up FTXM71UVMZ 7.1 kW cool / 8.1 kW heat. Is yours a back to back install?

 

 

Yep, back to back install plus removal of the old one which was on a different wall.




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Ultimate Geek


  #2503732 12-Jun-2020 15:43
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Wow, interesting! You got a good deal I think :) I imagine the $450 difference is the 12m distance between the indoor and outdoor unit we have, plus a bit of variation between companies. 


 
 
 
 


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  #2503752 12-Jun-2020 16:24
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tdgeek:

Dont want to hijack the thread, but it might be useful for others


We have two heatpumps, Fujitsu. One downstairs one upstairs. Large house so decent capacity


Is there an option to upgrade relatively cheaply by:


Swapout the two outdoor units and swap out the two indoor units. Already plumbed, so a quick and easy disconnect/reconnect for outdoor and indoor, and our units have a value for resale/tradein?



Generally yes. You'd want an installer to take a look through as there can be piping variations.

642 posts

Ultimate Geek


  #2503779 12-Jun-2020 17:29
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LostBoyNZ:

 

Wow, interesting! You got a good deal I think :) I imagine the $450 difference is the 12m distance between the indoor and outdoor unit we have, plus a bit of variation between companies. 

 

 

I think the difference is even more, $750, as my model is the next size up to yours (FTXM71 - 7.1 kW cool / 8.1 kW heat)




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Ultimate Geek


  #2503808 12-Jun-2020 18:03
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tigercorp:

 

LostBoyNZ:

 

Wow, interesting! You got a good deal I think :) I imagine the $450 difference is the 12m distance between the indoor and outdoor unit we have, plus a bit of variation between companies. 

 

 

I think the difference is even more, $750, as my model is the next size up to yours (FTXM71 - 7.1 kW cool / 8.1 kW heat)

 

 

I looked back again and I'd forgotten I'd asked for R1.5 insulated ducting instead of R0.5, so that put the price up.


298 posts

Ultimate Geek


  #2508374 19-Jun-2020 20:37
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Unless you really like the look if the Zena choose the Cora.
You want the unit with the best COP rating as thats the whole point of a heat pump, to get as much heat out of it for as little electricity.



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Ultimate Geek


  #2508377 19-Jun-2020 20:42
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Thanks, that makes sense yes, we've locked in getting the Cora :)

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  #2508536 20-Jun-2020 01:02
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Relatively new Cora owner here. Happy with it so far! Was also one of the most energy efficient ones i could find on paper (similar capacity to the FTXM50UVMZ ones).




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353 posts

Ultimate Geek


  #2508557 20-Jun-2020 08:09
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sonyxperiageek: Relatively new Cora owner here. Happy with it so far! Was also one of the most energy efficient ones i could find on paper (similar capacity to the FTXM50UVMZ ones).


Thanks, that's really good to hear :) Can I ask did you go for Wi-Fi option too?

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  #2508575 20-Jun-2020 09:25
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No, I didn't go with the wifi option so I can't comment on that. However, I did ask the installer about them and he mentioned the ones that did get it installed, sometimes they would disconnect and so it was a pain for him to have to keep taking the whole indoor unit off the racks just to get inside the unit to reset the wifi module. Now he just puts the wifi module outside the indoor unit, on the top for easier access.

May be something to think about if you do get it installed。




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