[Agent-noun of Latin type from calefacĕre to warm.]
† 1. He who, or that which warms; a warmer.
1605. Timme, Quersit., II. vii. 133. It standeth in neede of a calefactor and restorer of heate.
2. Name of a small kind of stove.
1831. Frasers Mag., III. 140. On the one hand smokes (in patent calefactors) a Dinner of innumerable courses.