How does the combustion system of a gas fire work?
Combustion of gas requires oxygen. Like a wood-burning stove or fire, a gas fire involves open- or closed-burning, but how does the combustion system work and what does it mean for the flue?
Gas fire with closed combustion
With closed combustion, the gas fire is connected to a pipe with an outlet and a supply duct, also called a concentric duct. Closed-burning gas fires are safer than open-burning gas fires and achieve higher efficiency. With high efficiency, you need less power to heat the room. If you have a fire with closed combustion, you will use less fuel, your heating costs will be lower and you will be more environmentally conscious.
It is important to choose a gas fire that suits your needs. The fire's capacity, for example, plays an important role in heating the room. With our tips, you can easily calculate the desired output of your gas fire.
Gas fire with open combustion
An open-burning gas fire takes oxygen from the room it is in. Gas fires with an open combustion have a low efficiency. This means your gas fire needs more power to heat the room. Does your gas fire have a low efficiency? Then you will have higher heating costs and be less environmentally conscious. Because of these disadvantages and for safety reasons, open combustion is almost no longer used.