Posted: Thu Feb 4, 2021 11:18am
As per previous answers, the costs will vary with the number of units, size / output required, manufacturer, etc.
A few tips:
If there are just two of you, then maybe just the main bedroom and the lounge area (guests could use an electric fan).
Whoever gives you the quote should recommend the required output for the size of room, so you're not paying for a higher output unit than you need.
Brands such as Daikin & Samsung can cost twice as much as say Midia, with Misubishi in the middle. €700 - €1,400 for the same output unit.
Many units also have heating functionality, which will help in the winter.
They can be quite expensive to run - check your electricity tariff (e.g. €0.16 / kWh) multiply by the unit output (say 3 kW), so that's €0.48 per hour, which doesn't sound much - but if you have it on for 4 hours a day, every day, then that's €60 per month...
Iberdrola were recently offering interest free credit for 3 years and if you took out a maintenance package at about €3 per month, then a 10 year guarantee.
One final thing - think about what wall they are installed on and where the outside unit would go. If it can be sited on a balcony then that's easy, but if you're on the 3rd floor and the installer needs ladders or a small scaffold, then the costs will be higher.
Hope this helps!