Grilling with real fire doesn’t overcook your roast meat and it can also instantly prepare your coffee! Cleanliness, convenience and economy for your heating machine! Ideal temperature for your shower all year round due to a gas boiler! The coal gas had many uses besides lighting, such as in cooking, heating and boiling. It is a form of energy that was massively used for many years in order to facilitate everyday life. The coal gas is a flammable and poisonous gas that was incredibly dangerous in case of a leak. In fact, it was sometimes used as a means of suicide!