Replacing electric radiators with inverter air conditioners

It depends on the cable lengths, and then you also need the additional boxes. Individual outdoor units are often cheaper as well. You will probably install different power levels. Depending on the situation, the outdoor units might also be placed next to each other. Large outdoor units are also heavier and bigger.

also in Switzerland the kWh does not cost 1.50 € or SFR. Your amortization calculation is also wrong because the air conditioners also need electricity. With different power requirements, individual units are better. they are cheaper, easier to plan and install.

You’re right, I had the wrong calculation at hand. Today the bill for the first quarter of 2024 arrived. An incredible 5771 kWh for kitchen, conveyor, bedroom, and hallway. The other rooms are completely off. I will now get a specialist to calculate it or advise me which brand and single or multisplit.