Which condensing boiler should I choose?
We have already discussed why to choose a condensing boiler. Here we explain the main differences between the model ranges and their features, including their advantages, component quality and combustion performance. Each range has different characteristics and suits different homes and buildings.
ATTACK Condensing KT 20, 28 GAS BOILER
Space heating with the option of heating domestic hot water in an external tank. Output modulation up to 1:10.
This range includes two boiler types with a slight difference in output range. The KT 28 is available with an output of up to 33 kW. These boilers are particularly suitable for family homes. They provide heating and can also heat domestic hot water in an external tank, which can be purchased separately. The KT 20 and KT 28 can heat a domestic hot-water tank with a capacity of up to 200 litres. They are suitable where hot-water demand is higher, for example in a home with several bathrooms or a larger family.
Gas condensing boiler
ATTACK Condensing KT 20, 28
ATTACK Condensing KST 24 GAS BOILER
Space heating and instantaneous domestic hot water. Output modulation up to 1:10.
This range is also suitable for family homes. It provides heating and instantaneous domestic hot water: water flows through the boiler’s heat exchanger, is heated as it passes through and is available immediately. This model is therefore mainly suited to smaller houses and flats.
Gas condensing boiler
ATTACK Condensing KST 24
ATTACK Condensing KZT 25 GAS BOILER
Space heating and domestic hot water in a built-in stainless-steel tank. Output modulation up to 1:10.
This model range can heat not only a family home but also a smaller business, such as a restaurant, small company or grocery shop. It also heats domestic hot water in a built-in 60-litre stainless-steel tank, which keeps a sufficient amount of hot water readily available.
Gas condensing boiler
ATTACK Condensing KZT 25
The KZT model has a PLUS function that increases the domestic hot-water output from the tank for greater comfort. The boiler offers a high output-modulation ratio of up to 1:10.
ATTACK Condensing KT 48 GAS BOILER FOR HIGH OUTPUT
Space heating with the option of heating domestic hot water in an external tank. Output modulation up to 1:10.
This is our highest-output range, designed mainly for commercial premises and large buildings. It offers a wide output-modulation ratio of up to 1:10 as well as high output.
Gas condensing boiler
ATTACK Condensing KT 48
Connecting multiple boilers
All our boilers can be connected in a cascade of up to four units. This multiplies the output of each added boiler to achieve high total output. A key advantage is uninterrupted operation if one unit develops a fault.
