Image, Stock Photo Heating engineers checks a old gas heating system, holding a Clipboard with checklist at a boiler room in a house. Gas heater replacement obligation concept image

Heating engineers checks a old gas heating system holding a Clipboard with checklist at a boiler room in a house. Gas heater replacement obligation concept image clipboard woman teamwork checklist water tank heating boiler heater system service maintenance technician pipe meter engineer man check controlling mechanic work fitter energy job craftsman occupation control installing tallyman plumber home oil repair costs construction specialist consumption regulation insulation environment modern europe sanctions temperature power budget thermostat energy crisis burner germany law heating bill heating costs old heater save energy warm gas boiler outdated replace renovate basement