Oilheat America

Why is heating oil red?

Furnace Why is heating oil red?

After refining, No. 2 heating oil is the color of champagne. For tax purposes, regulations require that heating fuel be dyed red before it is sold. This is so the authorities can tell the difference between heating oil and on-road diesel fuel. The dye has no effect on the fuel and how it burns.

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The average boiler today as big as a three drawer filing cabinet. Furnaces are similarly sized.