Sanierungsmöglichkeiten Heizung

If the cantonal energy regulations are not yet in force in a canton, the remaining time can be used for less expensive conversions, i.e. the conversion can be done with any heating system (no legal restrictions). This also applies to cantons where the energy regulations have already been put into force, but the building energy certificate is Category D or higher.

If the cantonal energy regulations have already entered into force in a canton and the building energy performance certificate is Category E or lower, renovation is possible with a standard solution only.

The 11 standard solutions according to the Energy Act

1. Solar panels for water heating
    The 10% renewable energy is achieved with a solar thermal system for water heating.


2. Wood firing for heating and hot water
    Wood burning is emission-neutral and is therefore considered renewable energy.

3. Wood burning is emission-neutral and is therefore considered renewable energy
    Air-to-water or brine-to-water heat pumps generate heat for heating and the preparation of
    hot water all year round. 


4. Natural gas heat pumps for heating and hot water
    The gas heat pump combines the advantages of condensing technology with renewable 
     energies. Natural gas/biogas serves as the primary drive energy.


5. District heating connection
    The heat comes from waste incineration, wastewater treatment or renewable energies.

6. Combined heat and power (CHP)
    For example, fuel cell technology produces heat and electricity in the house at the
    same time.

7. Domestic hot water heat pump plus photovoltaics
    The electricity generated in the photovoltaic system operates the heat pump for producing
     hot water.

8. Replacement of the windows
    The old windows are replaced by new ones with high thermal insulation.

9. Thermal Insulation
    The facade and/or roof are equipped with thermal insulation.

10. Dual system heating
      A combined heating system that covers the base load with renewable and peak loads with
      fossil energies.


11. Controlled home ventilation
      An apartment ventilation system with heat recovery is installed.

Economy and cost of heating systems

What does a heating system actually cost, taking into account investments every 20 years, annual service/maintenance, and daily energy purchases? Enclosed you will find a comparison table. (In the example, the current amount of energy is 4,600 litles of heating oil/year.)

Conclusions

In the long term, the geothermal heat pump is certainly the most effective solution, provided that drilling at the relevant location is possible and the space available on the property and on the property allows it, even if the investment costs for the conversion are the highest.