Solar water heating · Derendingen
At a glance
Small project
CHF 9'600 – CHF 22'600
Typical project
CHF 12'400 – CHF 28'800
Large project
CHF 17'000 – CHF 39'100
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 3 m² | CHF 9'600 | CHF 22'600 | CHF 5'200 |
| Typical project | 6 m² | CHF 12'400 | CHF 28'800 | CHF 3'300 |
| Large project | 11 m² | CHF 17'000 | CHF 39'100 | CHF 2'500 |
Computed with our estimator for Derendingen (regional factor included), standard finish. Only the project size changes.
Included
Not included
In Derendingen, the federal building register lists 1'430 residential buildings and 3'516 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.
56 % built before 1980
Construction year does not reveal past renovations: check the current insulation condition.
53 % · Gas
This distribution describes recorded buildings, not your system's consumption or efficiency.
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 53 % | 36.2 % |
| Heating oil | 24 % | 18.4 % |
| District heating | 3 % | 2 % |
| Heat pump | 16 % | 5.5 % |
| Electricity | 2 % | 33.8 % |
| Wood | 1 % | 0.8 % |
| Solar thermal | 1 % | 3.1 % |
Each line gives the share of buildings using that energy, separately for heating and for hot water. The two columns do not always reach 100%: some buildings combine two systems, or reported none.
A standard non-condensing boiler is usually older and less efficient.
7.1 % of buildings mix housing with shops or offices.
For your renovation plans in Derendingen, the official building register (RegBL) provides key figures, though data coverage remains partial. A median house volume of 185 m3, measured per SIA 416 standards, offers a scale for your insulation or heating projects, though this covers only 5 of the 943 recorded houses. Regarding heritage protection, no protected buildings are registered among the 168 entries with known status. Given these gaps in data, it is essential to contact the municipality early to verify specific local requirements and ensure your renovation project aligns with all necessary regulations for your property.
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Solar thermal collectors capture solar energy to heat a heat transfer fluid that then transmits warmth to your water tank. Solar thermal collectors usually cover much of summer hot water, providing a free and renewable energy source.
This system significantly reduces the load on your main boiler. Beyond the ecological aspect, a well-maintained installation increases the property value of your home in Derendingen.
It is recommended to hire a qualified installer to assess the optimal tilt and orientation of your roof to make the most of the available solar radiation.
A high-performance installation relies on precise sizing. Combining collectors with a heat pump needs a sizing study to avoid imbalances between the different energy sources.
It is necessary to consider the number of occupants and actual hot water consumption to avoid over- or under-sizing. A well-integrated system maximizes self-consumption while ensuring full reliability in winter when sunlight is weaker.
To get an indicative price range for your project, consult the RenoIndex simulator, which helps you visualize the investment required for your home.
In the canton of Solothurn, it is recommended to check the current support programmes before signing any quotes. Grants may vary depending on the type of technology and performance targets.
Remember to include the long-term energy savings in your profitability calculation. RenoIndex supports you by providing clear cost estimates to facilitate your budget planning for a solar thermal system.
Once installed, your solar thermal system requires little maintenance, but periodic checking is essential. Verifying the heat transfer fluid and the condition of the collectors guarantees the longevity of your installation.
Regular maintenance prevents drops in performance due to dirt or aging components. By investing in quality equipment, you ensure reliable production over several decades.
Also, remember to check heat meters regularly if your installation is equipped with them. For any questions regarding maintenance or installation costs, RenoIndex is your partner for a reliable and transparent estimate in Derendingen.
1. Estimate
Set a budget range with the estimator.
2. Grants
Apply before work starts.
3. Quotes
Compare at least 3 quotes.
4. Permit
Check with the municipality whether a permit is needed.
5. Works
Follow the site and do a written handover.
No specific grant listed for this work. Maintenance tax deductions may still apply.
2829 Vermes · about 16.2 km
The website presented under the name Imeri Chauffage et Sanitaire Sàrl offers plumbing, heating and solar thermal work, while F. Imeri Sàrl’s registered purpose refers to a scrap metal business.
imeri-sarl.ch2832 Rebeuvelier · about 19.3 km
Eco6therm specializes in the installation of heating systems, particularly heat pumps, and solar photovoltaic energy solutions.
eco6therm.ch2740 Moutier · about 19.8 km
Company in Moutier specializing in plumbing, heating (oil, wood, heat pumps), and solar thermal and photovoltaic solutions.
bmonnerat.ch2824 Vicques · about 21.6 km
Buchwalder Sàrl in Vicques has specialized in the installation, repair, and renovation of heating and sanitary systems since 1966.
buchwalder-sarl.chSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
It is strongly advised against performing the installation yourself. Handling fluids, hydraulic connections, and safety standards require the intervention of a certified professional. A compliant installation is essential to qualify for any potential grants and ensure the safety of your home.
Solar thermal installations are designed to last a long time. On average, solar collectors have a lifespan of 20 to 25 years, while the storage tank can last just as long with proper care. Regular maintenance is the best way to maximize this longevity.
Although performance is higher in summer, solar collectors also contribute in winter. They primarily serve as pre-heating for water, reducing the load on your main heating system. Correct sizing is crucial to optimize these solar gains during the colder months.
To get a reliable estimate, use the free RenoIndex calculator. It takes into account various parameters to provide you with a realistic price range for your project in Derendingen. This helps you plan your budget better and start informed discussions with local installers.
