In case of installation of heat pumps in existing buildings you can deduct up to 65% of the amount invested, Installation and VAT included.
So assuming a 10.000 euro expense, you will be able to avoid paying 6.500 euro taxes.
From time to time are also provided regional contributions and the application of reduced VAT rates for the works of installation is always possible in residential buildings.
If you want to do the insights on heating with heat pump, You can find valuable information at the following links: