Solar water heating · Au (SG)
At a glance
Small project
CHF 9'000 – CHF 21'100
Typical project
CHF 11'600 – CHF 26'900
Large project
CHF 15'900 – CHF 36'500
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 3 m² | CHF 9'000 | CHF 21'100 | CHF 4'900 |
| Typical project | 6 m² | CHF 11'600 | CHF 26'900 | CHF 3'100 |
| Large project | 11 m² | CHF 15'900 | CHF 36'500 | CHF 2'300 |
Computed with our estimator for Au (SG) (regional factor included), standard finish. Only the project size changes.
Included
Not included
In Au (SG), the federal building register lists 1'541 residential buildings and 4'070 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.
54 % built before 1980
Construction year does not reveal past renovations: check the current insulation condition.
38 % · Heat pump
This distribution describes recorded buildings, not your system's consumption or efficiency.
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 32 % | 21.3 % |
| Heating oil | 28 % | 21.2 % |
| Heat pump | 38 % | 32.8 % |
| Electricity | 1 % | 17.6 % |
| Wood | 2 % | 0.3 % |
| Solar thermal | 0 % | 6.7 % |
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.
10.1 % of buildings mix housing with shops or offices.
For your renovation projects in Au, data from the federal building register indicates that at least 9 buildings are subject to heritage protection, requiring early coordination with the municipality to secure necessary permits. Please note that data coverage is partial for certain indicators: information regarding the year of renovation and building volume according to the SIA 416 standard is not available in the current records. We advise you to verify these technical specifications directly with local authorities before proceeding with modernization plans or insulation upgrades to ensure your project aligns with municipal requirements and building standards.
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Installing solar thermal collectors is a sustainable and efficient choice for your home in Au (SG). These systems capture energy from solar radiation to heat domestic hot water.
In practice, solar thermal collectors usually cover much of the summer hot water, significantly reducing the load on your main boiler during sunny months.
In addition to making substantial savings on your energy bills, you participate in more ecological management of your domestic resources while increasing the resale value of your property on the real estate market.
To succeed with your project, it is essential to consider the technical integration of your heating system. It is common to combine solar thermal collectors with other heat sources, such as a modern heat pump.
However, combining collectors with a heat pump needs a sizing study by a certified heating engineer. This step ensures that your system operates optimally, without overheating in the summer and with maximum efficiency in the winter.
Correct sizing also avoids unnecessary costs associated with systems that are too complex or under-sized for your actual needs.
It is advisable to regularly consult official incentive programmes before starting your work. This financial assistance helps amortise the initial investment, making your solar installation more affordable in the long term.
For a clear view of the predictable costs for your home, access our RenoIndex simulator and get a personalised estimate based on Swiss market standards.
A successful installation requires careful planning. Start by checking the orientation and pitch of your roof in Au (SG) to optimise solar yields.
Then, use qualified installers who can validate the compatibility of your existing structure with the chosen panels. Do not forget to plan for periodic maintenance of the system to ensure its durability over several decades.
Finally, compare several detailed quotes and check the references of local companies. To obtain a solid basis for comparison and know the average local prices, use the free RenoIndex online calculator.
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 162.7 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.ch2824 Vicques · about 166.8 km
Buchwalder Sàrl in Vicques has specialized in the installation, repair, and renovation of heating and sanitary systems since 1966.
buchwalder-sarl.ch2824 Vicques · about 166.8 km
Specialist since 1968 in sanitary installations, heating (gas, oil, wood, renewable energy), and tinsmithing with 24/7 emergency repair service.
sanit.ch2824 Vicques · about 166.8 km
Gyger Haustechnik specializes in sanitary installations, heating systems, bathroom renovations, and tiling work.
gyger-co.chSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
High-quality solar thermal collectors typically have a lifespan of between 20 and 25 years, or more with regular maintenance. It is important to have the heat transfer fluid and seals checked every few years to ensure optimal performance and avoid leaks or premature degradation of the system.
Yes, solar collectors also work in winter, even in cold weather, as they capture solar radiation. However, their yield is lower due to the shorter sunshine duration and reduced intensity of the sun's rays. They then act as support for the main heating system.
In general, roof-integrated or roof-parallel solar installations do not require a building permit but must be notified to the municipality. It is always recommended to contact your local administration to confirm the specifics related to your zone before starting the work.
To get a reliable estimate adapted to market prices, use the free RenoIndex online calculator. It allows you to define the project type and get an accurate price range based on your situation, thus facilitating your budgeting before soliciting firm offers from companies.
