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E-mail: gemashop@gema-net.de

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Heizungskessel.

Boiler

Heating boiler && Heat supply – boilers, furnaces and heat pumps for every requirement

Our range of heating boilers

Our product range includes a wide selection of boilers and heating solutions to suit different building sizes, fuels, and requirements. Whether you're looking for modern technology for efficient fuel use, renewable systems for biomass utilization, or proven solutions for robust, continuous performance – we offer products characterized by quality, reliability, and durability.

Our product range includes both residential and industrial solutions. In addition to stationary boilers, we also offer compact units for single-family and multi-family homes, as well as modular systems for commercial and agricultural applications. This diverse range of applications allows us to offer customized system designs precisely tailored to your heating load and preferences.

Biomass boilers

Biomass boilers are a sustainable solution for converting renewable fuels such as wood, wood chips or agricultural residues into heat. They are characterized by high combustion efficiencies and a low fossil CO2 footprint and are particularly suitable for regions with good access to biomass. Modern biomass boilers often offer automatic feeding, controlled combustion and flue gas condensation as an option to optimize fuel use.

When selecting a biomass boiler, aspects such as fuel quality, storage options and transport routes as well as integration into existing heating systems must be taken into account. Many of our models are designed to operate with different grain sizes and moisture levels, which increases flexibility and improves the economics of the system.

Solid fuel boilers

Solid fuel boilers are robust and versatile solutions for solid fuels such as logs or briquettes. They offer ease of use, long service life and often a higher tolerance for fluctuating fuel quality. Particularly in rural areas with a reliable wood supply, solid fuel boilers are an economical choice for providing heat independently of fossil fuels.

Modern solid fuel boilers have improved combustion chamber design and combustion air flow, which helps reduce emissions and increase efficiency. Combinations with buffer storage or automatic supply systems enable comfortable operation and better use of the heat generated, even with fluctuating consumption.

Natural draft boilers

Natural draft boilers work without a fan and use the natural draft of the chimney to supply combustion air and exhaust flue gases. This design is simple, robust and often cheaper to purchase and maintain. Natural draft boilers are particularly suitable for simple heating systems and for locations where electrical components should be largely avoided.

What is important with natural draft boilers is the correct dimensioning of the chimney and compliance with technical specifications regarding draft length and strength. Careful regulation and the right choice of fuel are crucial to ensure a stable, clean combustion process and high operational safety.

Carburettor boilers

Carburettor boilers use the principle of wood gasification, in which flammable gases are released in a first step and burned cleanly in a second step. This two-stage process achieves higher efficiencies and lower emissions than pure solid-state combustion. Carburettor boilers are particularly efficient on logs and are therefore suitable for users who want to reduce fossil fuels without sacrificing comfort.

The technology requires precise control of the air supply and often some user training, as operation takes place in phases and filling should be planned precisely. Integrated controls, buffer storage and automatic ignition aids simplify everyday life and make gasification boilers an attractive choice for sustainable heating.

Pellet boilers

Pellet boilers are characterized by a high level of comfort and level of automation. They burn densely compressed wood pellets that are fed into conveyor systems and allow fully automatic continuous operation with precise control. Pellet boilers combine the advantages of renewable biomass with user-friendliness, as they provide fuel storage, conveyor systems and control technology in a coordinated manner.

The economic viability of pellet boilers depends on pellet prices, storage capacities and the specific heat requirement.Modern systems have low emissions and are often eligible for funding under energy efficiency programs. In addition, modular designs enable adaptation to buildings of different sizes and load profiles.

Heat pumps

Heat pumps use environmental energy from air, soil or groundwater to provide high-efficiency heating. They are a central technology for the decarbonization of buildings and, depending on the source and system type, offer very high annual performance factors. Particularly in combination with well-insulated buildings, heat pumps can represent a comfortable and economical solution.

When planning heat pumps, heat distribution in the building is a crucial factor: low-temperature systems such as underfloor heating significantly increase efficiency. In addition, funding programs and the connection to photovoltaics for the power supply are attractive options for reducing operating costs and further reducing environmental impacts.

Fireplace stoves and atmospheric stoves

Fireplace stoves offer not only warmth but also atmospheric comfort and a visual enhancement of the living space. Modern fireplace stoves are more efficient and cleaner than older devices and in many cases can be connected to existing heating systems or used as additional heat generators. They are ideal for selective heating of living areas and for users who value direct contact with fire.

When using fireplace stoves, correct dimensioning and compliance with safety distances are essential. It is equally important to choose a device with a suitable air supply and emission class to ensure long-term clean operation and low pollution. Many models can be operated with a supply air connection in order not to pollute the room air.

Brands and manufacturers

We carry products from renowned manufacturers who stand for technology, quality and service. Among others, you will find devices from Atmos, Rojek, Vaillant, Thermoflux, Attack and Defro. These brands offer a wide range of solutions - from classic solid fuel boilers to modern pellet systems to innovative heat pumps and compact fireplace stoves.

The selection of manufacturers with an established service network and spare parts supply is an important factor for the operational reliability and long-term economic viability of the heating system. We work with manufacturers who offer certifications, test bench results and practical support so that your investment retains its long-term value.

Planning, installation and integration

A professionally planned and installed heating system is the basis for efficient and reliable operation. The heating load calculation, building envelope, storage requirements and connection options are taken into account right from the planning phase. Only through careful design can consumption be minimized and the service life of the system maximized.

Our partner companies take care of the professional installation, including all safety-relevant measures, integration into existing systems and commissioning. Especially with combination solutions such as a boiler plus heat pump or buffer storage, the coordination of control technology and hydraulic balancing is crucial for optimal operation.

Maintenance, service and spare parts

Regular maintenance increases the efficiency and service life of your heating system and reduces the risk of malfunctions. Our services include inspections, cleaning, combustion chamber and heat exchanger care as well as testing of safety-relevant components. We offer maintenance contracts for many boilers that ensure predictable costs and preferred response times.

We also have an extensive range of original spare parts and wear parts available. Quickly available spare parts and qualified technicians ensure that repairs are carried out quickly. For older systems, we also examine options for retrofitting modern control technology or partial modernization in order to increase efficiency and comfort.

Efficiency, emissions and environmental aspects

Increasing efficiency and reducing emissions are central criteria when selecting and operating boilers. Modern combustion technologies, optimized air flow and heat recovery reduce pollutant emissions and increase the efficiency of the fuel. Exhaust gas aftertreatment and finer control have proven particularly useful in biomass and pellet systems.

The environmental balance of a system depends not only on the device, but also on the fuel, operation and the entire system integration. A combination of renewable energy sources, efficient control and good insulation of the building leads to significantly better results in terms of CO2 balance and operating costs than considering individual components alone.

Funding opportunities and cost-effectiveness

For many efficient and renewable heating solutions, there are funding programs at regional and national level. These subsidies can significantly reduce acquisition and installation costs and shorten the payback period. We would be happy to advise you on current funding opportunities and support you with applications and documentation.

The economic viability depends on energy price developments, system size, usage profile and available funding. A professional cost-effectiveness calculation shows which solution is worthwhile in the short and long term. In many cases, investments in modern boilers or heat pumps pay off through energy savings and lower operating costs.

Safety and operating instructions

Safety has the highest priority in heating systems. This includes suitable installation conditions, sufficient fire protection, correct exhaust systems and regular inspections. Modern devices have numerous protective functions such as overheating protection, pressure monitoring and automatic switch-off functions that support safe operation.

It is important for operators to adhere to the operating instructions, observe fuel quality recommendations and not miss cleaning appointments. If you are unsure or notice any abnormalities, you should contact service immediately to avoid consequential damage and to ensure the safety of the system.

Selection aid: Which boiler is right for you?

The right choice depends on several factors: building size, heating load, availability of fuel, budget, need for automation and environmental preferences. While heat pumps particularly shine in well-insulated buildings, biomass or pellet boilers are often advantageous where cheap fuel sources are available. Solid fuel and gasification boilers offer robust alternatives for special applications.

We recommend individual advice and a heat load calculation as the basis for every decision. On-site appointments allow a realistic assessment of space, chimney conditions and possible integration options, so that in the end a tailor-made solution is created that balances comfort, economy and environmental aspects.

Contact and expert advice

Our team will support you from the initial consultation through the selection of the right device to professional installation and long-term care.Use our experience when evaluating technical options, addressing funding issues and planning combinations such as boiler plus buffer storage or hybrid solutions with heat pumps.

Well-founded advice is the key to a sustainably satisfactory investment. Make an appointment for an individual analysis of your situation - together we will develop a concept that optimally meets your requirements for comfort, economy and environmental protection.

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