Even heating systems that don’t have any moving parts can still make the occasional sound. … Oil-filled electric radiators can make a slightly different sound when they heat up, sometimes described as a crackling, popping or a clicking noise – this is completely normal and caused by the expansion of the thermal fluid.

Why is my electric heater making noises?

The ducts that send warm air throughout your home are made of thin metal. The metal can expand when heated and will contract as it cools down after the furnace cycles off. As the metal ducts expand, they typically make a banging or booming noise.

How do I stop my electric heater from making noise?

Another good trick: do not overtighten screws fastening the heater to the wall. After your heater is securely in place, loosen screws half a turn. This will leave room for the metal to expand without making noise. Likewise, you should leave a space of at least 1/8″ (3 mm), between molding and baseboard heater sides.