Combined atmospheric gas boilers

Dual-function atmospheric gas boilers - efficient heating and hot water

Atmospheric gas boilers with two functions are a popular heating solution . They combine heating and domestic hot water heating functions. At Onninen we offer a wide selection of these devices. Our products are characterized by high efficiency and reliability. We supply boilers from renowned brands such as Termet and Immergas.

Atmospheric boilers draw air from the room in which they are installed. This makes them simpler to build than boilers with a closed combustion chamber. This also makes them cheaper to buy and install.   They are especially useful in single-family homes and small apartments . We often install them in buildings with traditional chimneys.

Types of dual-function atmospheric gas boilers

In our offer you will find different models of these devices. Boilers with a power of 24 kW and 13/22 kW are available. The latter have a power of 13 kW for central heating and 22 kW for domestic hot water. This solution ensures optimal operation in both modes. We also offer boilers with electronic ignition or a pilot flame.

Dual-function gas boilers with an open combustion chamber are a proven solution . They are simple to use and easy to service. Their advantage is also quiet operation. This is important when the boiler is installed close to residential premises.

• 24 kW boilers - ideal for medium-sized homes
• Boilers 13/22 kW - optimal for apartments and small houses
• Electronic ignition models - gas savings
• Versions with pilot light - faster start-up

How to choose a dual-function atmospheric gas boiler?

Choosing the right boiler is a key issue. It affects the comfort of use and operating costs. At Onninen, we advise on the selection of devices. We take into account many factors. The most important are the heated area and the number of household members.

For a house with an area of about 120 m², we recommend a 24 kW boiler . It will provide efficient heating and sufficient hot water. For smaller apartments, the 13/22 kW model will be a better choice. It will adjust the power to current needs.

Energy efficiency is also an important aspect. Modern boilers have high efficiency, reaching up to 93%. This translates into lower gas bills. It is worth paying attention to the energy efficiency class of the device.

Installation and operation of dual-function atmospheric gas boilers

Installing a gas boiler requires appropriate qualifications. At Onninen, we work with experienced installers. They provide professional installation and start-up of the device. This guarantees safe and efficient operation of the boiler.

Regular maintenance is key to long and trouble-free operation of the boiler . We recommend annual inspections performed by an authorized service. They include cleaning the exchanger, checking for leaks and adjusting the burner. Such actions extend the life of the device.

In everyday use, atmospheric boilers are very user-friendly. They only require periodic checking of the water pressure in the system. It is also worth paying attention to any messages on the boiler display.

1. Choose an installation location with good ventilation
2. Ensure proper chimney draft
3. Check the system pressure regularly
4. Do not cover the ventilation grilles in the boiler room

Our company offers comprehensive support in the selection and operation of boilers. We provide technical advice and assistance in the selection of spare parts. Thanks to this, our customers can enjoy efficient and safe heating.

Atmospheric gas boilers with two functions are a proven heating solution . They combine ease of use with high efficiency. At Onninen we offer a wide selection of these devices. We invite you to familiarize yourself with our offer and take advantage of the professional advice of our specialists.