I'm not sure if the higher temperatures would compromise the finish.
Should a special type of paint be used on a forced air HVAC heat register
painting
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Best Answer
If you mean the registers used in forced air HVAC then they are not really exposed to any extreme temperatures that would warrant a special paint. I would imagine that the most common type of paint used is a matt or metallic spray paint. Clean them well before painting and make sure to paint in a well ventilated area!