Service and special requests FAQ

Availability of documents

All required documents, data sheets and declarations of conformity are available for download on our website.

Technical advice

We offer a telephone service for technical support. Simply contact us by phone, email or via our contact form.

Order change

If you would like to make changes to your order, please contact us immediately using our contact form. Please note that changes are no longer possible once payment has been made and the order has been forwarded to our shipping center.

Balcony power plants FAQ

What is meant by a balcony power plant?

A balcony power plant is a small photovoltaic system that was specifically designed to be used on the balcony, terrace or even in the garden of a household. These systems usually consist of one or two solar modules and an inverter that converts the direct current generated into alternating current. This can then be used directly in the household or fed into the public power grid. A balcony power plant is therefore a compact and easy-to-install solution for using solar energy.

Is a permit necessary to operate a balcony power plant?

Whether a permit is required to operate a balcony power plant depends on the local regulations and the respective energy supplier. In Germany, for example, balcony power plants with an output of up to 600 watts are generally allowed to be operated without a special permit. However, it is important to clarify this with the responsible network operator and the property management before installation, as there may be reporting requirements and safety and building regulations must be observed.

How much electricity can I generate with a balcony power plant?

The amount of electricity generated by a balcony power plant depends on several factors, such as the orientation and tilt of the solar panel, the geographical location, the number of hours of sunshine and the power of the solar panels. As a rule of thumb, a standard solar module with an output of 200 watts in Germany can generate an average of around 200 kWh of electricity per year. However, this can vary and should be calculated individually for each location.

How environmentally friendly is a balcony power plant?

Balcony power plants are a very environmentally friendly way to generate electricity as they are based on the use of solar energy, which is a clean, renewable energy source. The production of solar power does not cause emissions or air pollution. However, the production and disposal of solar modules should also be taken into account when considering the environmental balance. However, modern solar panels typically have a lifespan of 20 to 25 years or more, which helps ensure they have a positive environmental footprint over their lifespan.

MC4 connector FAQ

What are MC4 connectors and what are they used for?

MC4 connectors are special connectors that are used in photovoltaics to connect solar panels to one another safely and efficiently. "MC" stands for "Multi-Contact" and the "4" denotes the diameter of the contact pin in millimeters. These plugs are waterproof and ensure an optimal electrical connection. They are widely used and often used on balcony power plants, such as Betteri's, because they are easy to install and ensure a reliable, long-lasting connection.

Can I use MC4 connectors to install my Betteri balcony power plant?

Yes, MC4 connectors are indeed very suitable for installing a Betteri balcony power plant. They enable the solar modules to be connected quickly and easily to each other and to the inverter. Thanks to their standardization and robust design, MC4 connectors ensure a secure and long-lasting electrical connection, which is essential for outdoor use on the balcony.

Are MC4 connectors safe and compliant for use in households?

MC4 connectors are known for their high level of safety and reliability. They meet international standards for photovoltaic applications and are designed to provide a stable connection under various environmental conditions. However, when installing, you should always follow the manufacturer's instructions and ideally consult a professional to ensure that all components are installed correctly and comply with applicable safety regulations.

How do I connect my solar panels with MC4 connectors?

To connect solar panels with MC4 connectors, you should first make sure the panels are turned off or covered to avoid current flow. Then bring the male and female ends of the MC4 connectors together and press them firmly until they click into place. It is important to ensure that the plus and minus leads are connected appropriately to ensure correct polarity. If anything is unclear or uncertain, it is advisable to consult a specialist.

Do I need special tools to assemble or disassemble MC4 connectors?

Assembling and disassembling MC4 connectors usually requires a special tool to ensure a secure and tight connection. There are special MC4 pliers that are used to crimp or loosen the connectors. This tool is designed to join or separate connectors without causing damage. It is advisable to use the right tools to avoid damage to the connectors or cables and to ensure maximum performance and security of the connection.

Inverter FAQ

What is an inverter and why is it necessary for a balcony power plant?

An inverter is a device that converts the direct current (DC) produced by solar panels into alternating current (AC) used in homes. An inverter is essential for a balcony power plant, as the energy generated by the solar panels in the form of direct current is not directly suitable for domestic use. The inverter ensures that this electricity is converted into a usable form that can be used to power household appliances or feed into the public power grid.

What types of inverters are there and which one is best suited for my balcony power plant?

There are mainly two types of inverters: string inverters and micro inverters. String inverters connect multiple solar panels in a series, while micro inverters connect to individual solar panels. Microinverters are often more suitable for a balcony power plant because they are designed for smaller solar systems and enable individual monitoring and optimization of the performance of each individual solar panel.

How do I choose the right size inverter for my balcony power plant?

The size of the inverter should be tailored to the performance of your solar panels. In general, the inverter power rating should be equal to or slightly higher than the maximum power of your solar panels. To determine the ideal size, you should add up the total power of your panels in watts and choose an inverter whose capacity supports this value.

Can I install my inverter myself or do I need a professional?

Installing an inverter can be complex and should ideally be carried out by a professional, especially when it involves integration into the home power grid. This ensures that all safety standards are met and the system functions efficiently and safely. A professional can also advise on choosing the right inverter and carry out the installation in accordance with local regulations and standards.

How much maintenance does an inverter require and what are the common problems?

Inverters are typically low maintenance, but it's a good idea to check them regularly to make sure they're working efficiently. Common problems can be software errors, contamination or technical defects. It is advisable to check the condition of the inverter regularly and to consult a specialist if there are any abnormalities such as a drop in performance or unusual noises. Many inverters also have a display that signals the current operating status and shows corresponding error codes in the event of an error.

Heat pump FAQ

What is a heat pump and how does it work?

A heat pump is a device that transfers heat energy from a lower temperature location (heat source) to a higher temperature location (heat sink). It works on the principle of reversing the refrigerant cycle, whereby a refrigerant is absorbed, compressed and then released again to transport heat. This allows the heat pump to heat efficiently even at low outside temperatures by using environmental heat from the air, the ground or the water.

What types of heat pumps are there and which one is right for my home?

There are different types of heat pumps, mainly differentiated according to their heat source: air heat pumps, ground source heat pumps (geothermal energy) and water heat pumps. Air source heat pumps are the easiest to install and require little space, while geothermal and water source heat pumps can be more efficient but also require a larger initial investment. Choosing the right heat pump depends on many factors, such as local conditions, space availability and the individual heating requirements of your home.

Are heat pumps environmentally friendly and energy efficient?

Yes, heat pumps are both environmentally friendly and energy efficient. They use renewable energy sources such as ambient air, soil or groundwater to generate heat, reducing the use of fossil fuels. In addition, heat pumps have high coefficients of performance (COP), which means that they deliver more energy as heat than they consume in the form of electrical energy. This leads to a reduction in overall energy consumption and CO2 emissions.

How much does it cost to install a heat pump and what are the operating costs?

The costs for installing a heat pump can vary greatly, depending on the type of heat pump, the necessary installation work and regional conditions. Air source heat pumps are usually the cheapest, while geothermal heat pumps can be more expensive due to the drilling or excavation required. Operating costs are usually lower compared to traditional heating systems, mainly due to the high efficiency of heat pump technology. In addition, government funding and subsidies can further reduce costs.

How maintenance-intensive is a heat pump and how long is its service life?

Heat pumps generally require little maintenance. However, it is recommended that you have them serviced by a professional once a year to ensure efficient operation. Maintenance work includes checking the amount of refrigerant, cleaning filters and replacing wearing parts. With good maintenance, the lifespan of a heat pump is usually between 15 and 20 years, making it a worthwhile long-term investment.

Solar modules FAQ

What are solar panels and how do they work?

Solar panels, also known as photovoltaic panels, are devices that convert light energy directly into electrical energy. They consist of an array of solar cells made from semiconducting materials such as silicon. When sunlight hits a solar cell, it generates an electrical current through the photovoltaic effect. This electricity can then be used to power electrical devices or fed into the power grid.

What different types of solar panels are there on the market?

There are mainly three types of solar panels: monocrystalline, polycrystalline and thin film. Monocrystalline modules have a high level of efficiency and are made from individual silicon crystals, recognizable by their uniform color. Polycrystalline modules are slightly cheaper and have slightly lower efficiency; they consist of many small silicon crystals. Thin-film modules are more flexible and often less expensive, but usually also have lower efficiency.

How do I choose the right size and performance of my solar panels?

The correct size and performance of your solar panels depends on several factors, including your household's energy needs, the space available for installation, and the intensity of sunlight in your area. It is advisable to consult a professional who can make an accurate calculation based on these parameters. As a rule, the output of the solar modules is given in watts (W), and it should be chosen so that it can cover most of the daily electricity requirements.

What should I consider when installing solar panels?

When installing solar panels, it is important to choose the right location that allows maximum sunlight without shading during the day. The modules should generally be oriented towards the south (in the northern hemisphere) and mounted at an optimal angle to the sun. In addition, the condition of the roof, statics and local building regulations must be taken into account. It is advisable to have the installation carried out by a qualified solar technician to ensure safety and efficiency.

How long do solar panels last and what is their warranty period?

The lifespan of solar panels is typically 25 to 30 years, with many manufacturers offering a performance guarantee of up to 25 years. This means that the modules should still retain much of their original capacity even after two decades. However, warranty terms may vary depending on the manufacturer and it is important to check these when purchasing. Investing in solar modules is therefore a long-term investment and can produce reliable electricity for many years.

Home technology FAQ

What is meant by building technology and what areas does it cover?

Building technology refers to the entirety of the technical equipment in a house that is used to ensure functions such as heating, water supply, electricity, ventilation and, in some cases, security and communication. It includes various areas such as heating technology, plumbing technology, electrical engineering, air conditioning technology and, in modern applications, smart home technologies that ensure efficient and comfortable operation of the house.

How can modern building technology help save energy costs?

Modern building technology can help reduce energy consumption and therefore energy costs through the use of energy-efficient systems and intelligent controls. For example, smart thermostats can regulate the heating so that it is only active when necessary. Efficient heat pump systems or solar-assisted heating systems use renewable energy and improve the overall energy balance of the house. In addition, the networking of building technology components enables central monitoring and optimization of energy consumption.

What should be taken into account when planning the building services for a new building?

When planning the building technology for a new building, future requirements and possible technological developments should be taken into account. It is important to coordinate architecture and building technology at an early stage to ensure optimal integration. In addition, energy efficiency and sustainability should be a priority, for example through the use of renewable energies and high-quality insulation. The possibility of later retrofitting with smart home systems or other technological innovations should also be considered.

What role does building technology play in the context of smart homes?

In smart homes, building technology plays a central role as it forms the basis for the intelligent networking and control of building technology components. Heating, lighting, security systems and many other functions can be operated via a central control unit, such as a tablet or smartphone. Intelligent sensors and actuators enable automatic adaptation to the needs of residents and contribute to greater comfort, safety and energy efficiency.

How can I retrofit my existing building technology to make it more efficient?

There are several options for making existing building technology more efficient. One option is to install a modern heating system, such as a heat pump, which uses less energy compared to older heating systems. A further step can be retrofitting with an intelligent building technology control system, which makes it possible to activate energy consumers only when they are needed. Improving the building envelope through additional insulation can also increase efficiency. It is advisable to seek advice from a specialist building services company in order to find a solution tailored to your individual building.