We just bought a home , built in 1965, in each room there is a intertherm baseboard heater. Which I believe are orginal to the home. Model..EBH 1500 24 The thermostats are located on the wall. The prevoius owner told us never to turn the thermostats all the way off or "bad" things would happen. As that what he was told by the orginal owners son ? But the stats have been turned all the way off. I've search for info on these heaters to no avail. Some of the heaters are rusted . And we're no sure how to maintain them. I do know that they are water and some type of gas..but yet electric. Thanks in advance for any info!!!