How do we perform device maintenance, and do we have to do it every year?

You must have your authorized service maintain your device before winter periodically once a year for healthier, longer and more efficient operation. Authorized service to perform maintenance controls all functions of your device, and prepares your device for the new season without problem by performing its general cleaning, required adjustments and alterations. Regarding this matter, you can guarantee service for long years with our premiums 'Plus Warranty' or 'Stars of Warranty' if you wish. If you are using flue type central heating boiler, geyser, stove (Natural Gas, LPG), floor heating or solid waste stove, have cleaning and examination of the flue your device is connected to made for your own safety!