Hot water service provision
Cold water service provisionGas supplyHot water service provisionMaintenance of central heating systemsMaintenance of chimneys and fluesMaintenance of gas supply systemsReading of the meters and gaugesRepair and restoration of buildingsService SupplyServices for the central district heatingServices of heat supplyServices related to the drying of buildingsVacuum ServicesVerification of heat-countersWater supply