Is an air conditioner necessary in a south-facing location?

I certainly hope so, so that the purchase was worth it

We also decided on the 10KW Daikin outdoor unit, but with 5x EMURA indoor units.
The installation effort and costs were also kept within limits since it was all done by ourselves.

P.S. The control via app works perfectly

May I ask what you paid for the hardware (outdoor and indoor units)?

I had an appointment with a building services company today... they are now also preparing an offer. Let's see....

Interior+exterior cost me about €5,000, I have to say that our company is a partner of Daikin, so we already get a good discount. Plus the special discount there is when buying "for private use." If the building services company does not add anything to the "hardware" and does not pass on any discount to you, it should be at least €10,000. Plus installation + refrigerant line + condensate line + condensate pump + electrical connection + commissioning. I think it could come to around €14,000-€16,000.

Then I'll bring up the topic since we are currently planning an air conditioning system. The favorite is a multi-split system from Daikin; now the question is which series of indoor units to choose? Comfora (which I have also heard of some "little problems" with) or Perfera, which also has app control included? It doesn't really have to be the Stylish version, as I only find it conditionally nicer.

Otherwise, we are currently waiting for the first offers; rooms to be air-conditioned are sized 12/15/16/52 m² with a room height of 2.25 m (the first three) and 2.90 m. The outdoor unit will probably be placed on the roof since this is also the best way to run the lines via the attic and chimney (dead) (plus access for maintenance). Then there is the question whether to drain all units to the roof with condensate pumps or follow the suggestion of the very competent-appearing refrigeration technician and lead the condensate via the chimney into the basement and then into the sewage system?

Are there any other suggestions or recommendations on the subject of air conditioning? We are tackling the whole thing because we have the bedrooms under the roof in the old building, and it does get very warm there in the summer.

I have different Daikin multisplit and singlesplit systems in use. Comfora, Emura, Siesta, and also several older series.

Honestly? It doesn't matter at all which series you choose. By and large, the indoor units are only about the design of the plastic casing.

Which little problems have you heard about? In my experience, 90% of the little problems are due to lack of maintenance.

Regarding the condensate drain, I would follow the advice and use as few condensate pumps as possible. Sure, it works with them, but that's unnecessary power consumption and the noise level is not to be underestimated. Despite silent and other designations, they always turn on when you least need them and are naturally louder than you imagine.

So the problem that was reported to me by another provider (who would also install Daikin) was that the Comfora sometimes reacts sluggishly. But the impression from the refrigeration technician yesterday was very, very good, and he was also planning with as few condensate pumps as possible. So that fits the good impression!

He also addressed maintenance directly; he said the indoor units manage themselves (but should be disinfected every two years) and they seem to do the outdoor unit very thoroughly.

In the parents' bedroom, the condensate pump can't really be avoided because we have to go up to the attic to get to the other 3-flue chimney. But that's just how it is; otherwise, they would have to open the wall again in the parents' bedroom (there is also one dead flue of the three there).

Then I'll see when the offers come and which devices they include; alternatively, we will also receive a Remko offer. But I actually tend towards Daikin, as there isn’t much information available about air conditioners.

Maintenance was also mentioned directly, he said indoor units work on their own (but should be disinfected every two years), and they seem to do the outdoor unit very thoroughly.

It’s always funny. Homebuilders with heat pumps almost always claim they are basically maintenance-free and you can do everything yourself if you ever have to deal with them every few years. But at the same time (you are not included here), they claim that split air conditioning systems are often too expensive to operate because of the necessary regular and extensive maintenance, etc. So they contradict themselves without noticing it. Regarding the condensate pump. If you still have the option, then better open the wall. Especially in the bedroom, I would want as little disturbing noise as possible.