Advise luft-vatten pump i Engelska

[Nol]

Hi
First of all we wish you all God Jul och Gott Nytt år
Thanks for alle your help which you all gave me in the past conserning our vacation house in Värmland

Now my question :
I am thinking about to remove the gas heating system and install a air-water pump.
We have no possibility for groud heating (berg eller jordvärme)
We have only floorheating
So therfore I think about something like the NIBE monoblock
We have 5200Wp sunpanels on the roof and I think about to install an other 2700Wp
Since you have much more experiance with heatingpumps then we have in Holland I like to ask you for advice ?
Which is better or what is the difference between the F2020 or the F2040 ?
Is the NIBE a good (best) choice or do you advice me for an other brand name ?
All information I appreciate and if you need more information please let me know
About the capacity I made a calculation and I need 5kW pump without warmwater tank and the companies here told me that I need 1kW more for a warmwater tank. What is your advice about that ?

Mvh
Nol

 

[Nol]

Which is better or what is the difference between the F2020 or the F2040 ?

Sorry but it is not the F2020 but the F2120 so which is better or what is the difference between the F2120 or the F2040