Works aimed at the maintenance and replacement of heat generators with a nominal power of less than 35 kW for the production of hot water, heating and domestic hot water, simultaneous energy efficiency of the gas heating system, provision of the first ignition service and five-year full service maintenance for the new installed generators.

Works aimed at the maintenance and replacement of heat generators with a nominal power of less than 35 kW for the production of hot water, heating and domestic hot water, simultaneous energy efficiency of the gas heating system, provision of the first ignition service and five-year full service maintenance for the new installed generators.