Chimneys
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Chimneys - a key element of heating systems
Chimneys play an important role in every heating system. They ensure the safe removal of exhaust gases and gases from heating devices. At Onninen we offer a wide range of chimney products. Our offer includes solutions for various types of installations. We supply components for both single-family homes and large industrial facilities.
Our experience shows that choosing the right chimney system is crucial. It affects the efficiency and safety of the entire heating system. That is why our range includes products from renowned brands. These include Krzys-Pol, Prodmax, Immergas and Bosch. We especially recommend our own brand Onnline. It offers an excellent price-quality ratio.
Types of chimneys available in the Onninen offer
In our wholesale store you will find various chimney systems. They include:
- Single-wall and double-wall chimney pipes
- Chimney kits for shafts
- Concentric air-flue systems
- Chimney accessories (elbows, tees, umbrellas)
We are often asked about the differences between different types of chimneys. Single-wall pipes are suitable for simple installations. Concentric systems are ideal for condensing boilers. Shaft kits allow for the modernisation of existing brick chimneys.
When selecting a chimney, it is crucial to take into account the type of boiler. The expected temperature of the exhaust gases is also important. The operating environment of the chimney system is also important. In the case of condensing boilers, we recommend pipes with gaskets. They ensure tightness at low exhaust gas temperatures.
Chimneys - key parameters and selection criteria
Choosing the right chimney system requires analyzing many factors. The most important are:
- Power and type of heating boiler
- Length and route of the chimney installation
- Corrosion resistance required
- Planned energy efficiency of the system
In our daily practice we see how important it is to adapt the chimney to specific conditions. Incorrect selection can lead to draft problems. This results in incorrect boiler operation and increased fuel consumption. In extreme cases, it even threatens to reverse exhaust gases into the room.
For condensing boilers, we recommend plastic or acid-resistant steel systems. They are resistant to acidic condensate. In the case of solid fuel boilers, ceramic or heat-resistant steel chimneys will work well. They provide resistance to high temperatures and aggressive exhaust gases.
Practical applications of chimney systems
Recently, we used chimney sets for shafts in a project for a large housing estate. This allowed for a quick and effective modernization of existing chimneys. Thanks to this, a costly reconstruction of the entire system was avoided.
When reorganizing offices, we most often use concentric systems. They enable flexible installation. This is especially important in buildings with a complex room layout. These systems also provide an aesthetic appearance, which is important in office spaces.
For individual customers, we recommend comprehensive chimney packages. They contain all the necessary elements for assembly. This simplifies the installation process and eliminates the risk of omitting important components. Our offer includes both gas and solid fuel boiler kits.
Many customers ask us about the possibility of using existing brick chimneys. In such cases, acid-resistant steel chimney liners work great. They allow for quick adaptation of the chimney to the new boiler. This is a much cheaper solution than building a new system from scratch.
Our experience shows that investing in a high-quality chimney system always pays off. This translates into higher heating efficiency and lower operating costs. That is why at Onninen we focus on products from proven brands. They guarantee reliability and long-term safety of use.
Onninen recommends paying special attention to the corrosion resistance parameters of chimneys. This is crucial especially in the case of condensing boilers. Aggressive condensate can quickly destroy an incorrectly selected chimney. Therefore, for such installations we recommend systems made of plastic or steel with increased resistance.
In the case of chimneys for solid fuel boilers, resistance to high temperatures is important. Our chimney sets for this type of installation are tested in extreme conditions. This ensures safety even with intensive use of the furnace.
We often encounter situations where a client plans to replace a boiler in the future. In such cases, we advise the selection of universal chimney systems. They allow for easy adaptation to various types of heating devices. This eliminates the need to replace the entire chimney when modernizing the heating system.
At Onninen, we place great emphasis on comprehensive advice in the field of chimney systems. Our specialists will help you choose the best solution. We take into account not only current needs, but also future plans. Thanks to this, our clients can be sure that their investment will serve for many years.
We invite you to contact our technical advisors. They will help you choose the perfect chimney system for your project. We also offer support at the design and installation stages. Thanks to this, you can be sure that the installation will be not only effective, but also safe.








































