The costs of a complete heat pump installation vary greatly and depend on several factors, including the type of heat pump, capacity, complexity of the installation, insulation of the house, and any modifications to the heating system. Here are some general guidelines:

1. Air-Air Heat Pump:

   • The costs for an air-air heat pump usually start around €5,000 to €7,000, including installation.

2. Air-Water Heat Pump:

   • An air-water heat pump is often slightly more expensive and can range from €8,000 to €15,000 or more, depending on capacity and installation requirements.

3. Ground-Water or Water-Water Heat Pump:

   • These systems are generally more expensive due to the complexity of the installation. Costs can range from €12,000 to €25,000 or more, depending on the specific situation.

4. Hybrid Heat Pump:

   • A hybrid heat pump, which works together with an existing central heating boiler, can range in cost from €6,000 to €12,000, including installation.

It is important to note that these cost indications are rough and can vary greatly based on specific circumstances. Other factors that affect costs include, for example, the location of the house, the necessary modifications to the heating system, the degree of insulation, and any subsidy or financing options.

Additionally, you should consider additional costs, such as:

• Installation costs: Depending on the complexity of the installation, installation costs can vary.

• Modifications to the Heating System: Sometimes modifications are necessary to make the heating system suitable for a heat pump.

• Maintenance costs: It is important to consider periodic maintenance for optimal performance.