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Baseboard Heating

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Baseboard Heating Black Wall Stains

The Home Wizard app calculates your ideal home care program to avoid problems with your Baseboard Heating, but sometimes trouble can still occur. Here are answers to questions about baseboard heating black wall stains.


What causes black stains on the walls above my hot water baseboard registers? Some of the baseboard is fairly new and they seem to be the worst.


Dear Barry:

Is the wall that you are seeing the black stains above the the heat registers an outside wall? It sounds like you might have what is called "thermal tracking."

Here is a webpage that describes the causes and fixes for thermal tracking:

Hope this is helpful.

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Baseboard Heating