Heat in dreams can be healing if it refers to a sunny day, the heat of the sun or a hot country in a positive way.
Heat is also indicative of your heart and feelings. For example, if the dream is saying there is no heat from the fire you are being asked to add warmth / passion to your heart with regard to the subject matter of the dream.
Heat can also be about negative emotions from others. To feel heat from someone would indicate they are angry at you. To direct heat at yourself would indicate you are frustrated over something. For example, a young single woman, who just learned she was pregnant, dreamt of her car melting in her driveway.
