| Answer | Crossword Clue |
|---|---|
| calorifiers | CALORIFIER, an apparatus for heating water in a tank |
| calorifier | an apparatus for heating water in a tank |
| heaters | any of various apparatus for heating, esp. for heating water or the air in a room |
| reheater | any of various apparatus for heating, esp. for heating water or the air in a room |
| heater | any of various apparatus for heating, esp. for heating water or the air in a room |
| plumbing | The system of pipes, tanks, fittings, and other apparatus required for the water supply, heating, and sanitation in a building |
