: I have a house that is 75+ years old. What do I need to do the maintain the steam heat system I have?NOTHING if it aint broke leave it alone. Just check to make sure you have no leaks as all fresh water contains oxygen and this is what kills a steam system. If a radiator doesnt get hot replace the air vent. To blance out a system alwys put the smaller vents closer to the heating source Good luck
