| Answer | Crossword Clue |
|---|---|
| CALORIE | An amount of heat |
| BTU | Approx. amount of heat given off by burning a wooden match |
| PREWARM | Heat in advance, as an oven |
| STERNO | It can add heat to an affair |
| ESTRUS | Stage when an animal is in heat |
| HADAC | Was equipped for summer heat, as an auto |
