Because the amount of carbon dioxide emitted during the combustion is insignificant, there is no time limit for the operation of the bio ethanol fireplace. It can be used at all times. In-service time depends solely on our needs and the supply of delivered fuel. It is not dependent on the security requirements or servicing need, as is the case with traditional fireplaces. If only we have a well-functioning ventilation system which is able to exhaust the small amount of CO2 formed during combustion, we do not have to worry about the time and frequency of using our bio ethanol fireplace.