Solar water heating · Lachen
At a glance
Small project
CHF 10'300 – CHF 24'100
Typical project
CHF 13'200 – CHF 30'700
Large project
CHF 18'200 – CHF 41'800
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 3 m² | CHF 10'300 | CHF 24'100 | CHF 5'600 |
| Typical project | 6 m² | CHF 13'200 | CHF 30'700 | CHF 3'500 |
| Large project | 11 m² | CHF 18'200 | CHF 41'800 | CHF 2'600 |
Computed with our estimator for Lachen (regional factor included), standard finish. Only the project size changes.
Included
Not included
In Lachen, the federal building register lists 1'165 residential buildings and 4'567 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.
48 % built before 1980
Construction year does not reveal past renovations: check the current insulation condition.
36 % · Heating oil
This distribution describes recorded buildings, not your system's consumption or efficiency.
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 19 % | 10.1 % |
| Heating oil | 36 % | 33.5 % |
| District heating | 11 % | 9.5 % |
| Heat pump | 22 % | 8.1 % |
| Electricity | 8 % | 31 % |
| Wood | 3 % | 1.7 % |
| Solar thermal | 1 % | 5.6 % |
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.
13.2 % of buildings mix housing with shops or offices.
For renovation projects in Lachen, official building register data provides key insights for your planning. With only one protected heritage site among 217 known buildings, heritage restrictions are limited, though contacting the municipality early is always advisable. The median building volume is 975 m3, which serves as a helpful reference for scaling heating and insulation works. Please note that data coverage is partial, as volume measurements according to the SIA 416 standard are available for only two houses. Consequently, homeowners should consult local experts to ensure their specific renovation budget aligns accurately with their property's unique dimensions.
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Solar thermal collectors are a high-performance solution for optimizing your household's energy consumption.
In general, these collectors cover a large portion of your hot water needs during the summer months, thereby significantly reducing the load on your main boiler. This technology is particularly effective for decreasing your reliance on fossil fuels.
By investing in thermal energy, you increase the value of your property while actively contributing to the Swiss energy transition. Use the RenoIndex estimator to calmly evaluate your budget before reaching out to local professionals for detailed quotes.
A successful solar installation requires careful consideration of overall sizing. Combining thermal collectors with a heat pump requires a rigorous sizing study to ensure system efficiency.
An installation that is too large or too small could limit the expected benefits. It is highly recommended to consult a specialized heating engineer who can analyze your actual needs, the pitch of your roof, and the sun exposure of your property in Lachen.
A well-integrated system maximizes yields throughout the year. RenoIndex supports you in this process by providing an indicative price range for your construction work.
As part of the energy transition, several cantons provide subsidies for solar collectors, either through payments per installed square meter or via a flat-rate grant per installation.
It is important to inquire about current programs before starting work, as grant conditions can vary. In Switzerland, support is typically managed at the cantonal level.
To properly anticipate your expenses after accounting for potential subsidies, use our RenoIndex tool. It allows you to view costs transparently and plan your investment with confidence in the canton of Schwyz.
The implementation of a solar thermal installation should not be improvised. Beyond the technical aspects, regulatory compliance in the canton of Schwyz must be respected.
Once the sizing is validated, you should contact local firms to obtain several comparative quotes. Ensure that the companies are certified to handle such specific equipment. Careful planning helps avoid budget surprises during the construction phase.
Remember that RenoIndex is always available to provide you with a consistent price estimate for your future thermal project, ensuring you have a solid foundation for negotiations.
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 104.2 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.ch2824 Vicques · about 109.1 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 109.1 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 109.1 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.
Yes, solar thermal collectors capture diffuse radiation even in cold weather. However, production decreases in winter due to lower light levels and outside temperatures. They then serve primarily as a supplement to the main heating system for preheating domestic hot water.
In the canton of Schwyz, it is advisable to check requirements with local authorities before starting. Although many solar installations are now subject to simplified procedures, specific rules may apply depending on the zone or building type, particularly for historical buildings or protected areas.
A well-maintained solar thermal installation can last between 20 and 25 years. Regular maintenance, including checking the heat transfer fluid and the proper operation of the circulator pump, is essential to guarantee the longevity of the system and its optimal performance throughout its service life.
Yes, this combination is common. Solar collectors heat domestic water, which significantly reduces the work of the heat pump. However, a sizing study is essential to ensure technical compatibility and optimize energy flows between the two pieces of equipment within the home.
