Nibe air-to-water heat pump options for the indoor unit

2-person household (no children) 170m² ~5.5kW heating demand No ERR (except guest room)

I have received an offer for a Nibe air-to-water heat pump F2050/6.

There are two options for the indoor unit:

Option 1: 1,000 pcs Nibe heat pump system with F2050/6 1,000 pcs NIBE outdoor air heat pump F2050-6 1,000 pcs NIBE control unit SMO S40 1,000 pcs NIBE heat meter set EMK 300 for SMO 40 1,000 pcs NIBE ELK 9 heating cassette 9 kW 1,000 pcs NIBE charging pump CPD 11-25/65 1,000 pcs NIBE condensate pipe KVR 11-10 1m, power 15W 1,000 pcs NIBE connection set for F2040 EG DN25 1,000 pcs NIBE VST 11 domestic hot water control Fighter 1,000 pcs NIBE domestic hot water storage DD-WH 30301F 295 l 1,000 pcs NIBE buffer storage UKV100 wall-mounted storage 4 connections 1" 100l 1,000 pcs NIBE heating circuit group DN 25 HKG25C without mixer

Option 2: Alternatively Nibe heat pump system with 2050/6 with VVMS 320 1,000 pcs NIBE air-to-water heat pump package 2379 F2050-6 + VVM S320 1,000 pcs NIBE condensate pipe KVR 11-10 1m, power 15W 1,000 pcs NIBE connection set for F2040 EG DN25

Basically, option 1 is assembled from several components and option 2 consists of the ready-made indoor unit VVM S320. Price-wise almost identical (option 1 is net ~€500 more expensive + possibly more installation hours) Which option would you choose? Does having a ready-made indoor unit offer the advantage that it is precisely matched to the heat pump?

Does having a ready-made indoor unit provide the advantage that it is exactly matched to the heat pump?

No, rather the opposite. You can connect the ready-made indoor unit to half a dozen heat pumps from Nibe. So standard stuff that works everywhere.

For me, the question is whether you are planning to have children or what your hot water demand is. Because the individual configuration has, for example, 65% more hot water volume, which is a big advantage with a high hot water demand (a lot of bathtub use or a family with children).
You could also have the unnecessary buffer tank removed in the individual configuration.

I would rather treat myself to the individual components. Repairs are also easier if there is a defect.

Meant that this indoor unit is matched to the Nibe heat pump.

No children planned/possible
Showering mostly every two days
Very rarely bathtub (if planned to bathe, i.e. manually a higher temperature beforehand is possible)
A boiler in the kitchen (due to the pipe length)
No circulation

I meant that this indoor unit is matched to the Nibe heat pump.

That's true. In the end, however, it doesn't really matter technically, since a heat pump is just a heat pump – not rocket science. There is no need for extensive tuning; the outdoor unit (regardless of the manufacturer) is built so simply that there are no real differences. With a car, you would say that the turbocharger is the outdoor unit and the rest of the car is the indoor unit.

No children planned/possible
Showers mostly every two days
Very rarely bathtub (if used, a higher temperature is planned manually beforehand)
A boiler in the kitchen (due to pipe length)
No circulation

Then a smaller storage tank (in offer 1) is sufficient. However, if the situation changes, you are totally inflexible with offer 2.